/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 07:29:13,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 07:29:13,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 07:29:13,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 07:29:13,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 07:29:13,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 07:29:13,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 07:29:13,844 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 07:29:13,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 07:29:13,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 07:29:13,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 07:29:13,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 07:29:13,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 07:29:13,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 07:29:13,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 07:29:13,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 07:29:13,862 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 07:29:13,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 07:29:13,862 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 07:29:13,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 07:29:13,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 07:29:13,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 07:29:13,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 07:29:13,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 07:29:13,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 07:29:13,864 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 07:29:13,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 07:29:13,865 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 07:29:13,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 07:29:13,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 07:29:13,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 07:29:13,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 07:29:13,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 07:29:13,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 07:29:13,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 07:29:13,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 07:29:13,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 07:29:13,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 07:29:13,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 07:29:13,867 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 07:29:13,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 07:29:13,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 07:29:14,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 07:29:14,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 07:29:14,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 07:29:14,067 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 07:29:14,068 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 07:29:14,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl [2022-01-18 07:29:14,069 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl' [2022-01-18 07:29:14,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 07:29:14,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 07:29:14,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 07:29:14,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 07:29:14,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 07:29:14,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,111 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 07:29:14,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 07:29:14,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 07:29:14,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 07:29:14,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 07:29:14,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 07:29:14,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 07:29:14,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 07:29:14,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 07:29:14,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/1) ... [2022-01-18 07:29:14,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 07:29:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:14,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 07:29:14,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 07:29:14,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 07:29:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 07:29:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 07:29:14,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 07:29:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 07:29:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 07:29:14,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 07:29:14,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 07:29:14,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 07:29:14,182 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 07:29:14,183 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 07:29:14,183 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 07:29:14,184 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 07:29:14,218 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 07:29:14,219 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 07:29:14,339 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 07:29:14,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 07:29:14,349 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 07:29:14,350 INFO L202 PluginConnector]: Adding new model sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 07:29:14 BoogieIcfgContainer [2022-01-18 07:29:14,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 07:29:14,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 07:29:14,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 07:29:14,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 07:29:14,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:29:14" (1/2) ... [2022-01-18 07:29:14,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fd2de1 and model type sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 07:29:14, skipping insertion in model container [2022-01-18 07:29:14,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 07:29:14" (2/2) ... [2022-01-18 07:29:14,359 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-fun.wvr.bpl [2022-01-18 07:29:14,365 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 07:29:14,365 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 07:29:14,366 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 07:29:14,366 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 07:29:14,417 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 07:29:14,460 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 07:29:14,466 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 07:29:14,467 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 07:29:14,476 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2022-01-18 07:29:14,517 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 111 states have (on average 2.810810810810811) internal successors, (312), 111 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:14,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 111 states have (on average 2.810810810810811) internal successors, (312), 111 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 07:29:14,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:14,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:14,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash 541406590, now seen corresponding path program 1 times [2022-01-18 07:29:14,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:14,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008715920] [2022-01-18 07:29:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:14,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:14,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:14,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008715920] [2022-01-18 07:29:14,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008715920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:29:14,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:29:14,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 07:29:14,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455760773] [2022-01-18 07:29:14,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:29:14,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 07:29:14,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 07:29:14,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:29:14,699 INFO L87 Difference]: Start difference. First operand has 112 states, 111 states have (on average 2.810810810810811) internal successors, (312), 111 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:14,797 INFO L93 Difference]: Finished difference Result 154 states and 436 transitions. [2022-01-18 07:29:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 07:29:14,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 07:29:14,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:14,811 INFO L225 Difference]: With dead ends: 154 [2022-01-18 07:29:14,812 INFO L226 Difference]: Without dead ends: 154 [2022-01-18 07:29:14,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 07:29:14,815 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 77 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:14,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 13 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 07:29:14,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-01-18 07:29:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 133. [2022-01-18 07:29:14,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:14,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2022-01-18 07:29:14,884 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 18 [2022-01-18 07:29:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:14,885 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2022-01-18 07:29:14,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:14,885 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2022-01-18 07:29:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 07:29:14,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:14,887 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:14,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 07:29:14,887 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1033477442, now seen corresponding path program 1 times [2022-01-18 07:29:14,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:14,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68378271] [2022-01-18 07:29:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:14,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:14,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:14,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68378271] [2022-01-18 07:29:14,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68378271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:29:14,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:29:14,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 07:29:14,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713291119] [2022-01-18 07:29:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:29:14,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 07:29:14,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:14,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 07:29:14,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 07:29:14,939 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:14,975 INFO L93 Difference]: Finished difference Result 158 states and 448 transitions. [2022-01-18 07:29:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 07:29:14,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 07:29:14,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:14,977 INFO L225 Difference]: With dead ends: 158 [2022-01-18 07:29:14,977 INFO L226 Difference]: Without dead ends: 158 [2022-01-18 07:29:14,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:29:14,979 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:14,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 15 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 07:29:14,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-01-18 07:29:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2022-01-18 07:29:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2022-01-18 07:29:14,999 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2022-01-18 07:29:14,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:14,999 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2022-01-18 07:29:14,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:14,999 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2022-01-18 07:29:15,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 07:29:15,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:15,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:15,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 07:29:15,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:15,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1959936804, now seen corresponding path program 1 times [2022-01-18 07:29:15,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:15,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490763086] [2022-01-18 07:29:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:15,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:15,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:15,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490763086] [2022-01-18 07:29:15,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490763086] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:15,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439118824] [2022-01-18 07:29:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:15,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:15,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:15,304 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:15,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 07:29:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:15,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 07:29:15,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:15,671 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:15,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 07:29:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:15,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:15,796 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:15,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-01-18 07:29:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:15,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439118824] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:15,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:15,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:29:15,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230870649] [2022-01-18 07:29:15,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:15,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:29:15,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:29:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:29:15,943 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:16,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:16,215 INFO L93 Difference]: Finished difference Result 366 states and 1043 transitions. [2022-01-18 07:29:16,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:29:16,216 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 07:29:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:16,218 INFO L225 Difference]: With dead ends: 366 [2022-01-18 07:29:16,218 INFO L226 Difference]: Without dead ends: 351 [2022-01-18 07:29:16,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:29:16,219 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 192 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:16,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 84 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 243 Invalid, 0 Unknown, 108 Unchecked, 0.1s Time] [2022-01-18 07:29:16,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-01-18 07:29:16,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 224. [2022-01-18 07:29:16,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2022-01-18 07:29:16,231 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2022-01-18 07:29:16,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:16,231 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2022-01-18 07:29:16,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:16,231 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2022-01-18 07:29:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 07:29:16,233 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:16,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:16,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:16,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:16,452 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:16,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:16,453 INFO L85 PathProgramCache]: Analyzing trace with hash -2127745896, now seen corresponding path program 2 times [2022-01-18 07:29:16,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:16,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452446277] [2022-01-18 07:29:16,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:16,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:16,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:16,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452446277] [2022-01-18 07:29:16,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452446277] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:16,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918126129] [2022-01-18 07:29:16,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:29:16,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:16,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:16,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:16,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 07:29:16,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:29:16,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:16,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 07:29:16,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:16,901 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:16,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-01-18 07:29:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:16,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:17,057 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:17,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-01-18 07:29:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:17,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918126129] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:17,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:17,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2022-01-18 07:29:17,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283551053] [2022-01-18 07:29:17,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:17,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:29:17,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:29:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:29:17,171 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:17,732 INFO L93 Difference]: Finished difference Result 478 states and 1385 transitions. [2022-01-18 07:29:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 07:29:17,732 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 07:29:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:17,735 INFO L225 Difference]: With dead ends: 478 [2022-01-18 07:29:17,735 INFO L226 Difference]: Without dead ends: 463 [2022-01-18 07:29:17,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=710, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:29:17,736 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 155 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:17,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 110 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 390 Invalid, 0 Unknown, 128 Unchecked, 0.2s Time] [2022-01-18 07:29:17,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-18 07:29:17,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 229. [2022-01-18 07:29:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2022-01-18 07:29:17,746 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2022-01-18 07:29:17,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:17,747 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2022-01-18 07:29:17,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2022-01-18 07:29:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 07:29:17,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:17,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:17,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:17,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-18 07:29:17,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:17,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1828972448, now seen corresponding path program 3 times [2022-01-18 07:29:17,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:17,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297130417] [2022-01-18 07:29:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:17,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:18,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297130417] [2022-01-18 07:29:18,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297130417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871380961] [2022-01-18 07:29:18,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:29:18,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:18,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:18,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:18,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 07:29:18,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:29:18,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:18,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 07:29:18,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:18,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 07:29:18,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:18,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:18,404 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:18,404 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-01-18 07:29:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:18,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871380961] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:18,496 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:18,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-01-18 07:29:18,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061822531] [2022-01-18 07:29:18,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:18,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:29:18,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:18,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:29:18,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:29:18,497 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:18,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:18,714 INFO L93 Difference]: Finished difference Result 378 states and 1075 transitions. [2022-01-18 07:29:18,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 07:29:18,714 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 07:29:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:18,716 INFO L225 Difference]: With dead ends: 378 [2022-01-18 07:29:18,716 INFO L226 Difference]: Without dead ends: 363 [2022-01-18 07:29:18,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:29:18,717 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 69 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:18,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 141 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 261 Invalid, 0 Unknown, 84 Unchecked, 0.1s Time] [2022-01-18 07:29:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-01-18 07:29:18,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 241. [2022-01-18 07:29:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2022-01-18 07:29:18,725 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2022-01-18 07:29:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:18,725 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2022-01-18 07:29:18,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2022-01-18 07:29:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 07:29:18,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:18,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:18,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:18,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:18,943 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash -258146848, now seen corresponding path program 4 times [2022-01-18 07:29:18,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:18,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256470129] [2022-01-18 07:29:18,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:18,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:19,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:19,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256470129] [2022-01-18 07:29:19,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256470129] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619752463] [2022-01-18 07:29:19,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:29:19,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:19,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:19,084 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:19,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 07:29:19,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:29:19,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:19,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 07:29:19,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:19,242 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:19,242 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 23 [2022-01-18 07:29:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:19,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:19,386 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:19,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-01-18 07:29:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:19,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619752463] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:19,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:19,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:29:19,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068550687] [2022-01-18 07:29:19,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:19,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:29:19,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:19,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:29:19,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:29:19,501 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:19,668 INFO L93 Difference]: Finished difference Result 381 states and 1109 transitions. [2022-01-18 07:29:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:29:19,669 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 07:29:19,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:19,671 INFO L225 Difference]: With dead ends: 381 [2022-01-18 07:29:19,671 INFO L226 Difference]: Without dead ends: 366 [2022-01-18 07:29:19,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:29:19,672 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 108 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:19,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 110 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 209 Invalid, 0 Unknown, 140 Unchecked, 0.1s Time] [2022-01-18 07:29:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-01-18 07:29:19,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 250. [2022-01-18 07:29:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.9437751004016066) internal successors, (733), 249 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:19,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 733 transitions. [2022-01-18 07:29:19,679 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 733 transitions. Word has length 22 [2022-01-18 07:29:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:19,679 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 733 transitions. [2022-01-18 07:29:19,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:19,679 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 733 transitions. [2022-01-18 07:29:19,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 07:29:19,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:19,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:19,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:19,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:19,891 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1789401154, now seen corresponding path program 5 times [2022-01-18 07:29:19,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:19,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049462509] [2022-01-18 07:29:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:19,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:20,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:20,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049462509] [2022-01-18 07:29:20,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049462509] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:20,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271065937] [2022-01-18 07:29:20,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:29:20,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:20,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:20,028 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:20,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 07:29:20,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:29:20,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:20,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 07:29:20,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:20,190 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:20,191 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2022-01-18 07:29:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:20,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:20,327 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:20,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-01-18 07:29:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:20,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271065937] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:20,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:20,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-01-18 07:29:20,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577417324] [2022-01-18 07:29:20,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:20,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:29:20,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:29:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:29:20,413 INFO L87 Difference]: Start difference. First operand 250 states and 733 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:21,003 INFO L93 Difference]: Finished difference Result 654 states and 1825 transitions. [2022-01-18 07:29:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 07:29:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 07:29:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:21,006 INFO L225 Difference]: With dead ends: 654 [2022-01-18 07:29:21,006 INFO L226 Difference]: Without dead ends: 625 [2022-01-18 07:29:21,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:29:21,007 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 173 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:21,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 215 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 344 Invalid, 0 Unknown, 95 Unchecked, 0.2s Time] [2022-01-18 07:29:21,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-01-18 07:29:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 253. [2022-01-18 07:29:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 2.9404761904761907) internal successors, (741), 252 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:21,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 741 transitions. [2022-01-18 07:29:21,015 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 741 transitions. Word has length 22 [2022-01-18 07:29:21,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:21,015 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 741 transitions. [2022-01-18 07:29:21,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:21,015 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 741 transitions. [2022-01-18 07:29:21,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-18 07:29:21,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:21,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:21,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 07:29:21,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:21,250 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:21,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:21,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1022431204, now seen corresponding path program 6 times [2022-01-18 07:29:21,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:21,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361161279] [2022-01-18 07:29:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:21,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:21,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:21,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361161279] [2022-01-18 07:29:21,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361161279] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:21,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610958427] [2022-01-18 07:29:21,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:29:21,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:21,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:21,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:21,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 07:29:21,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 07:29:21,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:21,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 07:29:21,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:21,556 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 07:29:21,556 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 38 [2022-01-18 07:29:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:21,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:21,672 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:21,672 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-01-18 07:29:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:21,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610958427] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:21,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:21,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-01-18 07:29:21,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575719562] [2022-01-18 07:29:21,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:21,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:29:21,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:21,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:29:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:29:21,754 INFO L87 Difference]: Start difference. First operand 253 states and 741 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:22,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:22,102 INFO L93 Difference]: Finished difference Result 465 states and 1325 transitions. [2022-01-18 07:29:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 07:29:22,103 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-18 07:29:22,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:22,105 INFO L225 Difference]: With dead ends: 465 [2022-01-18 07:29:22,105 INFO L226 Difference]: Without dead ends: 450 [2022-01-18 07:29:22,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:29:22,106 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:22,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 195 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 368 Invalid, 0 Unknown, 51 Unchecked, 0.2s Time] [2022-01-18 07:29:22,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-18 07:29:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 247. [2022-01-18 07:29:22,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2022-01-18 07:29:22,112 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2022-01-18 07:29:22,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:22,113 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2022-01-18 07:29:22,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2022-01-18 07:29:22,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:22,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:22,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:22,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:22,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:22,329 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:22,330 INFO L85 PathProgramCache]: Analyzing trace with hash 976010682, now seen corresponding path program 7 times [2022-01-18 07:29:22,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:22,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057286456] [2022-01-18 07:29:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:22,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:22,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:22,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:22,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057286456] [2022-01-18 07:29:22,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057286456] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:22,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959633809] [2022-01-18 07:29:22,371 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:29:22,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:22,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:22,372 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:22,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 07:29:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:22,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:22,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:22,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:22,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959633809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:22,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:22,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 07:29:22,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552367831] [2022-01-18 07:29:22,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:22,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:29:22,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:22,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:29:22,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:29:22,575 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:23,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:23,317 INFO L93 Difference]: Finished difference Result 1099 states and 3110 transitions. [2022-01-18 07:29:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 07:29:23,318 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:23,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:23,322 INFO L225 Difference]: With dead ends: 1099 [2022-01-18 07:29:23,322 INFO L226 Difference]: Without dead ends: 1099 [2022-01-18 07:29:23,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=714, Invalid=2148, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 07:29:23,323 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 265 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:23,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 216 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-01-18 07:29:23,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 311. [2022-01-18 07:29:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 3.141935483870968) internal successors, (974), 310 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 974 transitions. [2022-01-18 07:29:23,335 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 974 transitions. Word has length 24 [2022-01-18 07:29:23,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:23,335 INFO L470 AbstractCegarLoop]: Abstraction has 311 states and 974 transitions. [2022-01-18 07:29:23,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 974 transitions. [2022-01-18 07:29:23,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:23,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:23,336 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:23,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:23,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:23,554 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:23,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:23,555 INFO L85 PathProgramCache]: Analyzing trace with hash -308162, now seen corresponding path program 8 times [2022-01-18 07:29:23,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:23,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289279038] [2022-01-18 07:29:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:23,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:23,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:23,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289279038] [2022-01-18 07:29:23,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289279038] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:23,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005855334] [2022-01-18 07:29:23,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:29:23,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:23,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:23,604 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:23,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 07:29:23,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:29:23,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:23,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:23,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:23,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:23,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:23,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005855334] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:23,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:23,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:29:23,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226943391] [2022-01-18 07:29:23,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:23,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:29:23,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:23,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:29:23,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:29:23,835 INFO L87 Difference]: Start difference. First operand 311 states and 974 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:25,491 INFO L93 Difference]: Finished difference Result 1794 states and 5013 transitions. [2022-01-18 07:29:25,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 07:29:25,497 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:25,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:25,504 INFO L225 Difference]: With dead ends: 1794 [2022-01-18 07:29:25,504 INFO L226 Difference]: Without dead ends: 1794 [2022-01-18 07:29:25,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4272 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2378, Invalid=8752, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 07:29:25,507 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 501 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:25,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 273 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:29:25,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-01-18 07:29:25,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 315. [2022-01-18 07:29:25,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 3.1656050955414012) internal successors, (994), 314 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 994 transitions. [2022-01-18 07:29:25,525 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 994 transitions. Word has length 24 [2022-01-18 07:29:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:25,526 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 994 transitions. [2022-01-18 07:29:25,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 994 transitions. [2022-01-18 07:29:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:25,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:25,527 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:25,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-01-18 07:29:25,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-18 07:29:25,743 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash 566643918, now seen corresponding path program 9 times [2022-01-18 07:29:25,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:25,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333898696] [2022-01-18 07:29:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:25,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:25,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:25,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333898696] [2022-01-18 07:29:25,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333898696] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:25,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076245941] [2022-01-18 07:29:25,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:29:25,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:25,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:25,790 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:25,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 07:29:25,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:29:25,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:25,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:25,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:25,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:26,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076245941] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:26,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:26,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:29:26,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263458645] [2022-01-18 07:29:26,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:26,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:29:26,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:29:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:29:26,024 INFO L87 Difference]: Start difference. First operand 315 states and 994 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:26,860 INFO L93 Difference]: Finished difference Result 1470 states and 4126 transitions. [2022-01-18 07:29:26,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 07:29:26,865 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:26,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:26,870 INFO L225 Difference]: With dead ends: 1470 [2022-01-18 07:29:26,870 INFO L226 Difference]: Without dead ends: 1470 [2022-01-18 07:29:26,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1095, Invalid=3327, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 07:29:26,872 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 373 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:26,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 231 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2022-01-18 07:29:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 306. [2022-01-18 07:29:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.1475409836065573) internal successors, (960), 305 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:26,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 960 transitions. [2022-01-18 07:29:26,884 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 960 transitions. Word has length 24 [2022-01-18 07:29:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:26,885 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 960 transitions. [2022-01-18 07:29:26,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:26,885 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 960 transitions. [2022-01-18 07:29:26,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:26,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:26,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:26,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:27,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:27,099 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:27,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1502782590, now seen corresponding path program 1 times [2022-01-18 07:29:27,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:27,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460540160] [2022-01-18 07:29:27,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:27,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:27,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:27,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460540160] [2022-01-18 07:29:27,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460540160] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:27,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109662856] [2022-01-18 07:29:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:27,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:27,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:27,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:27,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:29:27,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:27,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 07:29:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:27,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:27,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109662856] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:27,289 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:27,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-18 07:29:27,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864890819] [2022-01-18 07:29:27,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:27,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:29:27,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:29:27,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:29:27,290 INFO L87 Difference]: Start difference. First operand 306 states and 960 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:27,416 INFO L93 Difference]: Finished difference Result 685 states and 2024 transitions. [2022-01-18 07:29:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:29:27,417 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:27,419 INFO L225 Difference]: With dead ends: 685 [2022-01-18 07:29:27,419 INFO L226 Difference]: Without dead ends: 679 [2022-01-18 07:29:27,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=143, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:29:27,420 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 153 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:27,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 40 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:29:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-01-18 07:29:27,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 429. [2022-01-18 07:29:27,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 3.2406542056074765) internal successors, (1387), 428 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1387 transitions. [2022-01-18 07:29:27,430 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1387 transitions. Word has length 24 [2022-01-18 07:29:27,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:27,431 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1387 transitions. [2022-01-18 07:29:27,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1387 transitions. [2022-01-18 07:29:27,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:27,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:27,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:27,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:27,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 07:29:27,648 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:27,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:27,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1065813882, now seen corresponding path program 10 times [2022-01-18 07:29:27,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:27,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093385562] [2022-01-18 07:29:27,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:27,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:27,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:27,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093385562] [2022-01-18 07:29:27,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093385562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:27,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909044510] [2022-01-18 07:29:27,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:29:27,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:27,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:27,700 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:27,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 07:29:27,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:29:27,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:27,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:27,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:27,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:27,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:27,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909044510] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:27,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:27,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-01-18 07:29:27,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756216296] [2022-01-18 07:29:27,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:27,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:29:27,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:27,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:29:27,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:29:27,863 INFO L87 Difference]: Start difference. First operand 429 states and 1387 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:28,175 INFO L93 Difference]: Finished difference Result 1159 states and 3490 transitions. [2022-01-18 07:29:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 07:29:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:28,180 INFO L225 Difference]: With dead ends: 1159 [2022-01-18 07:29:28,180 INFO L226 Difference]: Without dead ends: 1111 [2022-01-18 07:29:28,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=690, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:29:28,181 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 288 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:28,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 108 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-01-18 07:29:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 639. [2022-01-18 07:29:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 3.3448275862068964) internal successors, (2134), 638 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 2134 transitions. [2022-01-18 07:29:28,198 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 2134 transitions. Word has length 24 [2022-01-18 07:29:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:28,198 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 2134 transitions. [2022-01-18 07:29:28,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 2134 transitions. [2022-01-18 07:29:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:28,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:28,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:28,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:28,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 07:29:28,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:28,416 INFO L85 PathProgramCache]: Analyzing trace with hash 359856550, now seen corresponding path program 2 times [2022-01-18 07:29:28,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:28,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841890911] [2022-01-18 07:29:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:28,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:28,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:28,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841890911] [2022-01-18 07:29:28,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841890911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:28,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791380103] [2022-01-18 07:29:28,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:29:28,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:28,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:28,443 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:28,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 07:29:28,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:29:28,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:28,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:29:28,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:28,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:28,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:28,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791380103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:28,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:28,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2022-01-18 07:29:28,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264661611] [2022-01-18 07:29:28,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:28,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:29:28,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:28,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:29:28,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:29:28,604 INFO L87 Difference]: Start difference. First operand 639 states and 2134 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:28,794 INFO L93 Difference]: Finished difference Result 1267 states and 3847 transitions. [2022-01-18 07:29:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 07:29:28,795 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:28,799 INFO L225 Difference]: With dead ends: 1267 [2022-01-18 07:29:28,799 INFO L226 Difference]: Without dead ends: 1267 [2022-01-18 07:29:28,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:29:28,800 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 173 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:28,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 66 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:29:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2022-01-18 07:29:28,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 683. [2022-01-18 07:29:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 3.3167155425219943) internal successors, (2262), 682 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2262 transitions. [2022-01-18 07:29:28,816 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2262 transitions. Word has length 24 [2022-01-18 07:29:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:28,816 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 2262 transitions. [2022-01-18 07:29:28,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2262 transitions. [2022-01-18 07:29:28,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:28,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:28,817 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:28,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:29,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 07:29:29,033 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:29,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:29,034 INFO L85 PathProgramCache]: Analyzing trace with hash -986825016, now seen corresponding path program 11 times [2022-01-18 07:29:29,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:29,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079264971] [2022-01-18 07:29:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:29,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:29,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:29,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:29,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079264971] [2022-01-18 07:29:29,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079264971] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828882688] [2022-01-18 07:29:29,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:29:29,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:29,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:29,074 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:29,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 07:29:29,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:29:29,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:29,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:29,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:29,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:29,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828882688] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:29,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:29,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:29:29,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602950400] [2022-01-18 07:29:29,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:29,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:29:29,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:29,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:29:29,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:29:29,221 INFO L87 Difference]: Start difference. First operand 683 states and 2262 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:29,682 INFO L93 Difference]: Finished difference Result 2268 states and 6749 transitions. [2022-01-18 07:29:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 07:29:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:29,690 INFO L225 Difference]: With dead ends: 2268 [2022-01-18 07:29:29,691 INFO L226 Difference]: Without dead ends: 2268 [2022-01-18 07:29:29,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 07:29:29,692 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 273 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:29,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 168 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2022-01-18 07:29:29,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 699. [2022-01-18 07:29:29,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 3.312320916905444) internal successors, (2312), 698 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:29,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 2312 transitions. [2022-01-18 07:29:29,715 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 2312 transitions. Word has length 24 [2022-01-18 07:29:29,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:29,715 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 2312 transitions. [2022-01-18 07:29:29,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:29,715 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 2312 transitions. [2022-01-18 07:29:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:29,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:29,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:29,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:29,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 07:29:29,926 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -201910922, now seen corresponding path program 12 times [2022-01-18 07:29:29,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:29,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211372938] [2022-01-18 07:29:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:29,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:29,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:29,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211372938] [2022-01-18 07:29:29,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211372938] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:29,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686965906] [2022-01-18 07:29:29,962 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:29:29,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:29,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:29,963 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:29,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 07:29:29,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 07:29:29,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:29,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:29,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:30,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:30,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:30,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686965906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:30,105 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:30,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:29:30,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74377587] [2022-01-18 07:29:30,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:30,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:29:30,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:30,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:29:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:29:30,106 INFO L87 Difference]: Start difference. First operand 699 states and 2312 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:30,726 INFO L93 Difference]: Finished difference Result 2256 states and 6789 transitions. [2022-01-18 07:29:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 07:29:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:30,734 INFO L225 Difference]: With dead ends: 2256 [2022-01-18 07:29:30,734 INFO L226 Difference]: Without dead ends: 2256 [2022-01-18 07:29:30,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=584, Invalid=2068, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 07:29:30,735 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 296 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:30,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 159 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:30,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-01-18 07:29:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 775. [2022-01-18 07:29:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.289405684754522) internal successors, (2546), 774 states have internal predecessors, (2546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2546 transitions. [2022-01-18 07:29:30,770 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2546 transitions. Word has length 24 [2022-01-18 07:29:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:30,771 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2546 transitions. [2022-01-18 07:29:30,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2546 transitions. [2022-01-18 07:29:30,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:30,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:30,773 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:30,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:30,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:30,983 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:30,984 INFO L85 PathProgramCache]: Analyzing trace with hash 186144540, now seen corresponding path program 13 times [2022-01-18 07:29:30,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:30,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500179862] [2022-01-18 07:29:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:30,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:31,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:31,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500179862] [2022-01-18 07:29:31,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500179862] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:31,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453730509] [2022-01-18 07:29:31,021 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:29:31,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:31,022 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:31,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 07:29:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:31,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:31,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:31,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:31,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:31,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453730509] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:31,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:31,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-01-18 07:29:31,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768779113] [2022-01-18 07:29:31,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:31,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:29:31,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:31,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:29:31,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:29:31,177 INFO L87 Difference]: Start difference. First operand 775 states and 2546 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:31,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:31,425 INFO L93 Difference]: Finished difference Result 1611 states and 5005 transitions. [2022-01-18 07:29:31,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 07:29:31,425 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:31,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:31,431 INFO L225 Difference]: With dead ends: 1611 [2022-01-18 07:29:31,431 INFO L226 Difference]: Without dead ends: 1611 [2022-01-18 07:29:31,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:29:31,432 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 222 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:31,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 118 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:29:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2022-01-18 07:29:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 926. [2022-01-18 07:29:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 925 states have (on average 3.370810810810811) internal successors, (3118), 925 states have internal predecessors, (3118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 3118 transitions. [2022-01-18 07:29:31,451 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 3118 transitions. Word has length 24 [2022-01-18 07:29:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:31,451 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 3118 transitions. [2022-01-18 07:29:31,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:31,451 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 3118 transitions. [2022-01-18 07:29:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:31,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:31,453 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:31,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 07:29:31,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 07:29:31,669 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:31,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash -246732064, now seen corresponding path program 14 times [2022-01-18 07:29:31,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:31,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301110015] [2022-01-18 07:29:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:31,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:31,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:31,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301110015] [2022-01-18 07:29:31,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301110015] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:31,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315033436] [2022-01-18 07:29:31,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:29:31,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:31,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:31,700 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:31,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 07:29:31,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:29:31,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:31,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:31,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:31,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:31,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315033436] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:31,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:31,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:29:31,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764469823] [2022-01-18 07:29:31,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:31,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:29:31,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:29:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:29:31,838 INFO L87 Difference]: Start difference. First operand 926 states and 3118 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:32,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:32,305 INFO L93 Difference]: Finished difference Result 2408 states and 7521 transitions. [2022-01-18 07:29:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 07:29:32,305 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:32,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:32,321 INFO L225 Difference]: With dead ends: 2408 [2022-01-18 07:29:32,321 INFO L226 Difference]: Without dead ends: 2404 [2022-01-18 07:29:32,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 07:29:32,322 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 307 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:32,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 147 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2022-01-18 07:29:32,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 934. [2022-01-18 07:29:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 3.356913183279743) internal successors, (3132), 933 states have internal predecessors, (3132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 3132 transitions. [2022-01-18 07:29:32,348 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 3132 transitions. Word has length 24 [2022-01-18 07:29:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:32,348 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 3132 transitions. [2022-01-18 07:29:32,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:32,348 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 3132 transitions. [2022-01-18 07:29:32,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:32,350 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:32,350 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:32,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:32,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 07:29:32,566 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash -112101728, now seen corresponding path program 15 times [2022-01-18 07:29:32,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:32,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7180005] [2022-01-18 07:29:32,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:32,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:32,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:32,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7180005] [2022-01-18 07:29:32,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7180005] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:32,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109748224] [2022-01-18 07:29:32,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:29:32,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:32,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:32,607 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:32,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 07:29:32,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:29:32,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:32,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:32,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:32,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:32,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109748224] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:32,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:32,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:29:32,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166178349] [2022-01-18 07:29:32,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:32,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:29:32,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:32,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:29:32,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:29:32,822 INFO L87 Difference]: Start difference. First operand 934 states and 3132 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:33,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:33,677 INFO L93 Difference]: Finished difference Result 3509 states and 10311 transitions. [2022-01-18 07:29:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 07:29:33,677 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:33,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:33,685 INFO L225 Difference]: With dead ends: 3509 [2022-01-18 07:29:33,685 INFO L226 Difference]: Without dead ends: 3509 [2022-01-18 07:29:33,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1091, Invalid=3199, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 07:29:33,687 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 470 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:33,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 268 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:29:33,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-01-18 07:29:33,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 985. [2022-01-18 07:29:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 3.399390243902439) internal successors, (3345), 984 states have internal predecessors, (3345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:33,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 3345 transitions. [2022-01-18 07:29:33,723 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 3345 transitions. Word has length 24 [2022-01-18 07:29:33,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:33,723 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 3345 transitions. [2022-01-18 07:29:33,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 3345 transitions. [2022-01-18 07:29:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:33,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:33,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:33,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:33,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:33,955 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:33,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1530937426, now seen corresponding path program 16 times [2022-01-18 07:29:33,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:33,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800554332] [2022-01-18 07:29:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:33,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:33,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:33,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800554332] [2022-01-18 07:29:33,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800554332] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:33,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855453967] [2022-01-18 07:29:33,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:29:33,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:33,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:33,991 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:33,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 07:29:34,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:29:34,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:34,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:34,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:34,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:34,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855453967] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:34,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:34,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:29:34,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403641645] [2022-01-18 07:29:34,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:34,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:29:34,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:29:34,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:29:34,179 INFO L87 Difference]: Start difference. First operand 985 states and 3345 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:35,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:35,336 INFO L93 Difference]: Finished difference Result 3211 states and 9686 transitions. [2022-01-18 07:29:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 07:29:35,336 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:35,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:35,343 INFO L225 Difference]: With dead ends: 3211 [2022-01-18 07:29:35,344 INFO L226 Difference]: Without dead ends: 3207 [2022-01-18 07:29:35,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2478 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1498, Invalid=5144, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 07:29:35,346 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 495 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:35,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 270 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:29:35,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3207 states. [2022-01-18 07:29:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3207 to 985. [2022-01-18 07:29:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 984 states have (on average 3.397357723577236) internal successors, (3343), 984 states have internal predecessors, (3343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 3343 transitions. [2022-01-18 07:29:35,380 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 3343 transitions. Word has length 24 [2022-01-18 07:29:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:35,380 INFO L470 AbstractCegarLoop]: Abstraction has 985 states and 3343 transitions. [2022-01-18 07:29:35,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 3343 transitions. [2022-01-18 07:29:35,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:35,382 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:35,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:35,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:35,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:35,599 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:35,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash 618651874, now seen corresponding path program 3 times [2022-01-18 07:29:35,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:35,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333234118] [2022-01-18 07:29:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:35,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:35,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:35,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333234118] [2022-01-18 07:29:35,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333234118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:35,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010324268] [2022-01-18 07:29:35,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:29:35,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:35,629 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:35,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 07:29:35,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:29:35,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:35,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:29:35,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:35,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:35,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010324268] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:35,749 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:35,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-01-18 07:29:35,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053649743] [2022-01-18 07:29:35,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:35,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 07:29:35,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 07:29:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-18 07:29:35,750 INFO L87 Difference]: Start difference. First operand 985 states and 3343 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:35,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:35,857 INFO L93 Difference]: Finished difference Result 1333 states and 4297 transitions. [2022-01-18 07:29:35,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 07:29:35,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:35,861 INFO L225 Difference]: With dead ends: 1333 [2022-01-18 07:29:35,861 INFO L226 Difference]: Without dead ends: 1333 [2022-01-18 07:29:35,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:29:35,861 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 100 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:35,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 51 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:29:35,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2022-01-18 07:29:35,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 937. [2022-01-18 07:29:35,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 3.378205128205128) internal successors, (3162), 936 states have internal predecessors, (3162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 3162 transitions. [2022-01-18 07:29:35,878 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 3162 transitions. Word has length 24 [2022-01-18 07:29:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:35,878 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 3162 transitions. [2022-01-18 07:29:35,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:35,878 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 3162 transitions. [2022-01-18 07:29:35,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:35,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:35,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:35,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:36,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:36,095 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1548851618, now seen corresponding path program 17 times [2022-01-18 07:29:36,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:36,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828007268] [2022-01-18 07:29:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:36,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:36,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:36,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828007268] [2022-01-18 07:29:36,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828007268] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:36,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084898194] [2022-01-18 07:29:36,131 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:29:36,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:36,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:36,132 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:36,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 07:29:36,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:29:36,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:36,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:36,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:36,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:36,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084898194] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:36,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:36,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 07:29:36,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910143035] [2022-01-18 07:29:36,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:36,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:29:36,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:29:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:29:36,278 INFO L87 Difference]: Start difference. First operand 937 states and 3162 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:36,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:36,599 INFO L93 Difference]: Finished difference Result 2129 states and 6669 transitions. [2022-01-18 07:29:36,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 07:29:36,600 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:36,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:36,604 INFO L225 Difference]: With dead ends: 2129 [2022-01-18 07:29:36,605 INFO L226 Difference]: Without dead ends: 2129 [2022-01-18 07:29:36,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:29:36,605 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 176 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:36,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 140 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:36,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-01-18 07:29:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1003. [2022-01-18 07:29:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 3.3642714570858283) internal successors, (3371), 1002 states have internal predecessors, (3371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 3371 transitions. [2022-01-18 07:29:36,629 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 3371 transitions. Word has length 24 [2022-01-18 07:29:36,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:36,629 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 3371 transitions. [2022-01-18 07:29:36,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:36,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 3371 transitions. [2022-01-18 07:29:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:36,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:36,631 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:36,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:36,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-18 07:29:36,847 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:36,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:36,847 INFO L85 PathProgramCache]: Analyzing trace with hash -843436226, now seen corresponding path program 18 times [2022-01-18 07:29:36,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:36,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167363943] [2022-01-18 07:29:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:36,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:36,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:36,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:36,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167363943] [2022-01-18 07:29:36,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167363943] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:36,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672298532] [2022-01-18 07:29:36,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:29:36,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:36,877 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:36,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 07:29:36,898 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:29:36,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:36,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:36,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:36,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:37,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:37,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672298532] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:37,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:37,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 07:29:37,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807690213] [2022-01-18 07:29:37,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:37,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:29:37,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:37,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:29:37,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:29:37,001 INFO L87 Difference]: Start difference. First operand 1003 states and 3371 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:37,332 INFO L93 Difference]: Finished difference Result 2262 states and 7067 transitions. [2022-01-18 07:29:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 07:29:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:37,338 INFO L225 Difference]: With dead ends: 2262 [2022-01-18 07:29:37,339 INFO L226 Difference]: Without dead ends: 2262 [2022-01-18 07:29:37,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 07:29:37,339 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 163 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:37,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 127 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2022-01-18 07:29:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 1073. [2022-01-18 07:29:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1072 states have (on average 3.3563432835820897) internal successors, (3598), 1072 states have internal predecessors, (3598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 3598 transitions. [2022-01-18 07:29:37,369 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 3598 transitions. Word has length 24 [2022-01-18 07:29:37,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:37,369 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 3598 transitions. [2022-01-18 07:29:37,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:37,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 3598 transitions. [2022-01-18 07:29:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:37,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:37,371 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:37,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:37,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 07:29:37,579 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1926458882, now seen corresponding path program 19 times [2022-01-18 07:29:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:37,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323363474] [2022-01-18 07:29:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:37,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:37,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:37,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323363474] [2022-01-18 07:29:37,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323363474] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:37,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446701202] [2022-01-18 07:29:37,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:29:37,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:37,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:37,626 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:37,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 07:29:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:37,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:37,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:37,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:37,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:37,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446701202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:37,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:37,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-01-18 07:29:37,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35239475] [2022-01-18 07:29:37,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:37,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:29:37,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:37,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:29:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:29:37,782 INFO L87 Difference]: Start difference. First operand 1073 states and 3598 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:37,999 INFO L93 Difference]: Finished difference Result 1474 states and 4766 transitions. [2022-01-18 07:29:37,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 07:29:37,999 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:37,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:38,002 INFO L225 Difference]: With dead ends: 1474 [2022-01-18 07:29:38,002 INFO L226 Difference]: Without dead ends: 1464 [2022-01-18 07:29:38,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:29:38,003 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 135 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:38,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 116 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:29:38,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2022-01-18 07:29:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1140. [2022-01-18 07:29:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.395961369622476) internal successors, (3868), 1139 states have internal predecessors, (3868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 3868 transitions. [2022-01-18 07:29:38,020 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 3868 transitions. Word has length 24 [2022-01-18 07:29:38,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:38,020 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 3868 transitions. [2022-01-18 07:29:38,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 3868 transitions. [2022-01-18 07:29:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:38,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:38,023 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:38,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:38,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:38,238 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash -888257368, now seen corresponding path program 20 times [2022-01-18 07:29:38,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:38,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721932061] [2022-01-18 07:29:38,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:38,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:38,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:38,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721932061] [2022-01-18 07:29:38,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721932061] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:38,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067264786] [2022-01-18 07:29:38,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:29:38,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:38,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:38,270 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 07:29:38,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:29:38,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:38,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:38,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:38,339 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:38,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:38,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067264786] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:38,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:38,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 07:29:38,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489807799] [2022-01-18 07:29:38,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:38,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:29:38,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:38,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:29:38,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:29:38,386 INFO L87 Difference]: Start difference. First operand 1140 states and 3868 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:38,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:38,622 INFO L93 Difference]: Finished difference Result 2318 states and 7414 transitions. [2022-01-18 07:29:38,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 07:29:38,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:38,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:38,627 INFO L225 Difference]: With dead ends: 2318 [2022-01-18 07:29:38,627 INFO L226 Difference]: Without dead ends: 2314 [2022-01-18 07:29:38,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:29:38,628 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 179 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:38,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 100 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:29:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2022-01-18 07:29:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 1140. [2022-01-18 07:29:38,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1139 states have (on average 3.394205443371378) internal successors, (3866), 1139 states have internal predecessors, (3866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 3866 transitions. [2022-01-18 07:29:38,651 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 3866 transitions. Word has length 24 [2022-01-18 07:29:38,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:38,651 INFO L470 AbstractCegarLoop]: Abstraction has 1140 states and 3866 transitions. [2022-01-18 07:29:38,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:38,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 3866 transitions. [2022-01-18 07:29:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:38,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:38,654 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:38,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:38,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:38,859 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:38,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:38,859 INFO L85 PathProgramCache]: Analyzing trace with hash -290920710, now seen corresponding path program 21 times [2022-01-18 07:29:38,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:38,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575666497] [2022-01-18 07:29:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:38,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:38,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:38,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575666497] [2022-01-18 07:29:38,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575666497] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:38,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812901095] [2022-01-18 07:29:38,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:29:38,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:38,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:38,901 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:38,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 07:29:38,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:29:38,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:38,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:38,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:38,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:38,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:39,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812901095] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:39,012 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:39,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 07:29:39,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196560029] [2022-01-18 07:29:39,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:39,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:29:39,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:39,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:29:39,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:29:39,013 INFO L87 Difference]: Start difference. First operand 1140 states and 3866 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:39,274 INFO L93 Difference]: Finished difference Result 2302 states and 7376 transitions. [2022-01-18 07:29:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 07:29:39,274 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:39,278 INFO L225 Difference]: With dead ends: 2302 [2022-01-18 07:29:39,279 INFO L226 Difference]: Without dead ends: 2290 [2022-01-18 07:29:39,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:29:39,279 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 230 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:39,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 119 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:29:39,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-01-18 07:29:39,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1148. [2022-01-18 07:29:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 3.3844812554489976) internal successors, (3882), 1147 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:39,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 3882 transitions. [2022-01-18 07:29:39,305 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 3882 transitions. Word has length 24 [2022-01-18 07:29:39,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:39,305 INFO L470 AbstractCegarLoop]: Abstraction has 1148 states and 3882 transitions. [2022-01-18 07:29:39,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:39,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 3882 transitions. [2022-01-18 07:29:39,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:39,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:39,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:39,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-01-18 07:29:39,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 07:29:39,507 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:39,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:39,508 INFO L85 PathProgramCache]: Analyzing trace with hash -817340994, now seen corresponding path program 22 times [2022-01-18 07:29:39,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:39,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358621115] [2022-01-18 07:29:39,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:39,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:39,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:39,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358621115] [2022-01-18 07:29:39,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358621115] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:39,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643486717] [2022-01-18 07:29:39,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:29:39,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:39,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:39,550 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:39,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 07:29:39,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:29:39,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:39,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:39,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:39,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:39,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:39,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643486717] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:39,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:39,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:29:39,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161108207] [2022-01-18 07:29:39,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:39,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:29:39,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:39,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:29:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:29:39,740 INFO L87 Difference]: Start difference. First operand 1148 states and 3882 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:40,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:40,519 INFO L93 Difference]: Finished difference Result 4760 states and 15112 transitions. [2022-01-18 07:29:40,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 07:29:40,520 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:40,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:40,544 INFO L225 Difference]: With dead ends: 4760 [2022-01-18 07:29:40,544 INFO L226 Difference]: Without dead ends: 4760 [2022-01-18 07:29:40,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=926, Invalid=2734, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:29:40,545 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 467 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:40,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 192 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2022-01-18 07:29:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 1429. [2022-01-18 07:29:40,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 3.589635854341737) internal successors, (5126), 1428 states have internal predecessors, (5126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:40,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 5126 transitions. [2022-01-18 07:29:40,593 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 5126 transitions. Word has length 24 [2022-01-18 07:29:40,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:40,594 INFO L470 AbstractCegarLoop]: Abstraction has 1429 states and 5126 transitions. [2022-01-18 07:29:40,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:40,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 5126 transitions. [2022-01-18 07:29:40,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:40,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:40,596 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:40,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:40,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 07:29:40,812 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:40,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash -250388914, now seen corresponding path program 23 times [2022-01-18 07:29:40,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:40,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72309207] [2022-01-18 07:29:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:40,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:40,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:40,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72309207] [2022-01-18 07:29:40,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72309207] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:40,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935753317] [2022-01-18 07:29:40,851 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:29:40,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:40,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:40,852 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:40,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 07:29:40,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:29:40,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:40,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:40,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:40,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:41,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935753317] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:41,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:41,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:29:41,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936266539] [2022-01-18 07:29:41,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:41,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:29:41,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:41,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:29:41,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:29:41,051 INFO L87 Difference]: Start difference. First operand 1429 states and 5126 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:41,708 INFO L93 Difference]: Finished difference Result 4260 states and 13532 transitions. [2022-01-18 07:29:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 07:29:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:41,716 INFO L225 Difference]: With dead ends: 4260 [2022-01-18 07:29:41,716 INFO L226 Difference]: Without dead ends: 4260 [2022-01-18 07:29:41,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=860, Invalid=2220, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 07:29:41,717 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 512 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:41,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 174 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2022-01-18 07:29:41,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 1426. [2022-01-18 07:29:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 3.5873684210526315) internal successors, (5112), 1425 states have internal predecessors, (5112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 5112 transitions. [2022-01-18 07:29:41,764 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 5112 transitions. Word has length 24 [2022-01-18 07:29:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:41,764 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 5112 transitions. [2022-01-18 07:29:41,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:41,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 5112 transitions. [2022-01-18 07:29:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:41,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:41,767 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:41,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:41,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 07:29:41,971 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1422734772, now seen corresponding path program 24 times [2022-01-18 07:29:41,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:41,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224135053] [2022-01-18 07:29:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:41,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:42,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:42,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224135053] [2022-01-18 07:29:42,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224135053] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:42,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054227737] [2022-01-18 07:29:42,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:29:42,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:42,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:42,012 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:42,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 07:29:42,034 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:29:42,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:42,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:42,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:42,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:42,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:42,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054227737] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:42,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:42,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2022-01-18 07:29:42,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189434173] [2022-01-18 07:29:42,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:42,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:29:42,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:29:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:29:42,174 INFO L87 Difference]: Start difference. First operand 1426 states and 5112 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:42,823 INFO L93 Difference]: Finished difference Result 4602 states and 14473 transitions. [2022-01-18 07:29:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 07:29:42,823 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:42,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:42,831 INFO L225 Difference]: With dead ends: 4602 [2022-01-18 07:29:42,831 INFO L226 Difference]: Without dead ends: 4602 [2022-01-18 07:29:42,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=1986, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 07:29:42,832 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 429 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:42,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 162 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2022-01-18 07:29:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 1436. [2022-01-18 07:29:42,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.592334494773519) internal successors, (5155), 1435 states have internal predecessors, (5155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5155 transitions. [2022-01-18 07:29:42,876 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5155 transitions. Word has length 24 [2022-01-18 07:29:42,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:42,876 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5155 transitions. [2022-01-18 07:29:42,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5155 transitions. [2022-01-18 07:29:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:42,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:42,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:42,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:43,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 07:29:43,091 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1341358684, now seen corresponding path program 25 times [2022-01-18 07:29:43,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:43,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171195327] [2022-01-18 07:29:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:43,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:43,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171195327] [2022-01-18 07:29:43,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171195327] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865365460] [2022-01-18 07:29:43,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:29:43,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:43,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:43,126 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:43,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 07:29:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:43,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:43,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:43,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:43,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:43,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865365460] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:43,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:43,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2022-01-18 07:29:43,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177607782] [2022-01-18 07:29:43,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:43,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:29:43,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:29:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:29:43,272 INFO L87 Difference]: Start difference. First operand 1436 states and 5155 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:43,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:43,750 INFO L93 Difference]: Finished difference Result 4348 states and 13871 transitions. [2022-01-18 07:29:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:29:43,751 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:43,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:43,758 INFO L225 Difference]: With dead ends: 4348 [2022-01-18 07:29:43,758 INFO L226 Difference]: Without dead ends: 4344 [2022-01-18 07:29:43,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=514, Invalid=1466, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 07:29:43,759 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 421 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:43,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 153 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2022-01-18 07:29:43,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 1436. [2022-01-18 07:29:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.590940766550523) internal successors, (5153), 1435 states have internal predecessors, (5153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5153 transitions. [2022-01-18 07:29:43,799 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5153 transitions. Word has length 24 [2022-01-18 07:29:43,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:43,800 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5153 transitions. [2022-01-18 07:29:43,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:43,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5153 transitions. [2022-01-18 07:29:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:43,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:43,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:43,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 07:29:44,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:44,015 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:44,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:44,016 INFO L85 PathProgramCache]: Analyzing trace with hash -410701468, now seen corresponding path program 26 times [2022-01-18 07:29:44,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:44,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314208046] [2022-01-18 07:29:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:44,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:44,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:44,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314208046] [2022-01-18 07:29:44,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314208046] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:44,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627509258] [2022-01-18 07:29:44,048 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:29:44,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:44,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:44,049 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:44,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 07:29:44,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:29:44,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:44,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:44,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:44,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:44,248 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:44,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627509258] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:44,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:44,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:29:44,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63195950] [2022-01-18 07:29:44,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:44,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:29:44,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:44,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:29:44,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:29:44,249 INFO L87 Difference]: Start difference. First operand 1436 states and 5153 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:44,804 INFO L93 Difference]: Finished difference Result 4035 states and 12669 transitions. [2022-01-18 07:29:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 07:29:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:44,811 INFO L225 Difference]: With dead ends: 4035 [2022-01-18 07:29:44,811 INFO L226 Difference]: Without dead ends: 4035 [2022-01-18 07:29:44,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=640, Invalid=1616, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 07:29:44,812 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 445 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:44,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 226 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:44,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2022-01-18 07:29:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 1442. [2022-01-18 07:29:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 3.5933379597501736) internal successors, (5178), 1441 states have internal predecessors, (5178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 5178 transitions. [2022-01-18 07:29:44,866 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 5178 transitions. Word has length 24 [2022-01-18 07:29:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:44,866 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 5178 transitions. [2022-01-18 07:29:44,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 5178 transitions. [2022-01-18 07:29:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:44,869 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:44,869 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:44,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 07:29:45,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:45,077 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:45,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1232337686, now seen corresponding path program 27 times [2022-01-18 07:29:45,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:45,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024183266] [2022-01-18 07:29:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:45,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:45,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:45,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024183266] [2022-01-18 07:29:45,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024183266] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:45,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287133702] [2022-01-18 07:29:45,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:29:45,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:45,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:45,113 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:45,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 07:29:45,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:29:45,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:45,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:45,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:45,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:45,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:45,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:29:45,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287133702] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:45,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:45,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-01-18 07:29:45,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744557296] [2022-01-18 07:29:45,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:29:45,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:29:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:29:45,276 INFO L87 Difference]: Start difference. First operand 1442 states and 5178 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:45,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:45,956 INFO L93 Difference]: Finished difference Result 3794 states and 12201 transitions. [2022-01-18 07:29:45,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 07:29:45,956 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:45,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:45,963 INFO L225 Difference]: With dead ends: 3794 [2022-01-18 07:29:45,963 INFO L226 Difference]: Without dead ends: 3790 [2022-01-18 07:29:45,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=800, Invalid=2392, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 07:29:45,964 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 471 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:45,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 175 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:45,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2022-01-18 07:29:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 1436. [2022-01-18 07:29:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 3.590940766550523) internal successors, (5153), 1435 states have internal predecessors, (5153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 5153 transitions. [2022-01-18 07:29:46,001 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 5153 transitions. Word has length 24 [2022-01-18 07:29:46,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:46,002 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 5153 transitions. [2022-01-18 07:29:46,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 5153 transitions. [2022-01-18 07:29:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:46,004 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:46,004 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:46,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:46,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-01-18 07:29:46,205 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2059201626, now seen corresponding path program 28 times [2022-01-18 07:29:46,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:46,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569201370] [2022-01-18 07:29:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:46,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:46,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:46,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569201370] [2022-01-18 07:29:46,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569201370] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:46,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491423740] [2022-01-18 07:29:46,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:29:46,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:46,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:46,243 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:46,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 07:29:46,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:29:46,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:46,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:46,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:46,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:46,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491423740] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:46,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:46,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:29:46,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16681541] [2022-01-18 07:29:46,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:46,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:29:46,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:29:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:29:46,385 INFO L87 Difference]: Start difference. First operand 1436 states and 5153 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:47,039 INFO L93 Difference]: Finished difference Result 3978 states and 12923 transitions. [2022-01-18 07:29:47,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:29:47,039 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:47,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:47,047 INFO L225 Difference]: With dead ends: 3978 [2022-01-18 07:29:47,047 INFO L226 Difference]: Without dead ends: 3978 [2022-01-18 07:29:47,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1009 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=699, Invalid=2271, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 07:29:47,048 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 171 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:47,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 232 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:47,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2022-01-18 07:29:47,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 1585. [2022-01-18 07:29:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.591540404040404) internal successors, (5689), 1584 states have internal predecessors, (5689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5689 transitions. [2022-01-18 07:29:47,087 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5689 transitions. Word has length 24 [2022-01-18 07:29:47,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:47,087 INFO L470 AbstractCegarLoop]: Abstraction has 1585 states and 5689 transitions. [2022-01-18 07:29:47,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:47,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5689 transitions. [2022-01-18 07:29:47,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:47,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:47,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:47,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:47,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:47,290 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:47,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:47,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1977825538, now seen corresponding path program 29 times [2022-01-18 07:29:47,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:47,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844630653] [2022-01-18 07:29:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:47,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:47,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:47,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844630653] [2022-01-18 07:29:47,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844630653] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:47,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208220060] [2022-01-18 07:29:47,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:29:47,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:47,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:47,329 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:47,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 07:29:47,350 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:29:47,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:47,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:47,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:47,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:47,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208220060] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:47,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:47,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:29:47,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099178115] [2022-01-18 07:29:47,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:47,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:29:47,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:29:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:29:47,471 INFO L87 Difference]: Start difference. First operand 1585 states and 5689 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:47,982 INFO L93 Difference]: Finished difference Result 3706 states and 12257 transitions. [2022-01-18 07:29:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:29:47,982 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:47,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:47,989 INFO L225 Difference]: With dead ends: 3706 [2022-01-18 07:29:47,989 INFO L226 Difference]: Without dead ends: 3702 [2022-01-18 07:29:47,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=457, Invalid=1435, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 07:29:47,990 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 254 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:47,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 160 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2022-01-18 07:29:48,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 1575. [2022-01-18 07:29:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1574 states have (on average 3.5870393900889455) internal successors, (5646), 1574 states have internal predecessors, (5646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 5646 transitions. [2022-01-18 07:29:48,028 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 5646 transitions. Word has length 24 [2022-01-18 07:29:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:48,028 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 5646 transitions. [2022-01-18 07:29:48,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 5646 transitions. [2022-01-18 07:29:48,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:48,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:48,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:48,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:48,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:48,247 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:48,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash 802049786, now seen corresponding path program 30 times [2022-01-18 07:29:48,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:48,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751939193] [2022-01-18 07:29:48,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:48,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:48,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:48,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:48,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751939193] [2022-01-18 07:29:48,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751939193] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:48,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34160800] [2022-01-18 07:29:48,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:29:48,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:48,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:48,282 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:48,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 07:29:48,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:29:48,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:48,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:48,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:48,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:48,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34160800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:48,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:48,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:29:48,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852426431] [2022-01-18 07:29:48,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:48,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:29:48,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:29:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:29:48,422 INFO L87 Difference]: Start difference. First operand 1575 states and 5646 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:48,935 INFO L93 Difference]: Finished difference Result 4114 states and 13193 transitions. [2022-01-18 07:29:48,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 07:29:48,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:48,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:48,943 INFO L225 Difference]: With dead ends: 4114 [2022-01-18 07:29:48,943 INFO L226 Difference]: Without dead ends: 4102 [2022-01-18 07:29:48,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=486, Invalid=1676, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 07:29:48,943 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 279 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:48,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 206 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2022-01-18 07:29:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 1595. [2022-01-18 07:29:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 3.5884567126725218) internal successors, (5720), 1594 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 5720 transitions. [2022-01-18 07:29:48,980 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 5720 transitions. Word has length 24 [2022-01-18 07:29:48,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:48,980 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 5720 transitions. [2022-01-18 07:29:48,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:48,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 5720 transitions. [2022-01-18 07:29:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:48,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:48,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:49,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 07:29:49,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 07:29:49,189 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1895790794, now seen corresponding path program 31 times [2022-01-18 07:29:49,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:49,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47432412] [2022-01-18 07:29:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:49,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:49,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:49,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47432412] [2022-01-18 07:29:49,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47432412] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:49,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720864696] [2022-01-18 07:29:49,223 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:29:49,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:49,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:49,224 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:49,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 07:29:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:49,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:49,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:49,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:49,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:49,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720864696] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:49,416 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:49,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:29:49,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251884754] [2022-01-18 07:29:49,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:49,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:29:49,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:49,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:29:49,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:29:49,418 INFO L87 Difference]: Start difference. First operand 1595 states and 5720 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:50,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:50,004 INFO L93 Difference]: Finished difference Result 3694 states and 11776 transitions. [2022-01-18 07:29:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 07:29:50,004 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:50,010 INFO L225 Difference]: With dead ends: 3694 [2022-01-18 07:29:50,011 INFO L226 Difference]: Without dead ends: 3694 [2022-01-18 07:29:50,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=678, Invalid=1772, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 07:29:50,011 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 339 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:50,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 284 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2022-01-18 07:29:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 1680. [2022-01-18 07:29:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1680 states, 1679 states have (on average 3.5842763549731984) internal successors, (6018), 1679 states have internal predecessors, (6018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 6018 transitions. [2022-01-18 07:29:50,062 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 6018 transitions. Word has length 24 [2022-01-18 07:29:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:50,062 INFO L470 AbstractCegarLoop]: Abstraction has 1680 states and 6018 transitions. [2022-01-18 07:29:50,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 6018 transitions. [2022-01-18 07:29:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:50,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:50,065 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:50,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 07:29:50,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-01-18 07:29:50,276 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash -252751640, now seen corresponding path program 32 times [2022-01-18 07:29:50,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:50,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541785931] [2022-01-18 07:29:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:50,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:50,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:50,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541785931] [2022-01-18 07:29:50,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541785931] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:50,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415312360] [2022-01-18 07:29:50,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:29:50,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:50,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:50,328 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:50,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 07:29:50,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:29:50,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:50,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:50,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:50,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:50,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415312360] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:50,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:50,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:29:50,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318126886] [2022-01-18 07:29:50,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:50,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:29:50,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:29:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:29:50,491 INFO L87 Difference]: Start difference. First operand 1680 states and 6018 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:51,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:51,218 INFO L93 Difference]: Finished difference Result 3420 states and 11230 transitions. [2022-01-18 07:29:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:29:51,218 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:51,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:51,225 INFO L225 Difference]: With dead ends: 3420 [2022-01-18 07:29:51,225 INFO L226 Difference]: Without dead ends: 3416 [2022-01-18 07:29:51,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=880, Invalid=2780, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:29:51,226 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 287 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:51,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 207 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:29:51,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3416 states. [2022-01-18 07:29:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3416 to 1678. [2022-01-18 07:29:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1677 states have (on average 3.5819916517590937) internal successors, (6007), 1677 states have internal predecessors, (6007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:51,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 6007 transitions. [2022-01-18 07:29:51,265 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 6007 transitions. Word has length 24 [2022-01-18 07:29:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:51,266 INFO L470 AbstractCegarLoop]: Abstraction has 1678 states and 6007 transitions. [2022-01-18 07:29:51,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 6007 transitions. [2022-01-18 07:29:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 07:29:51,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:51,269 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:51,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 07:29:51,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 07:29:51,469 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:51,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1520208818, now seen corresponding path program 33 times [2022-01-18 07:29:51,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:51,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973737523] [2022-01-18 07:29:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:51,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:51,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:51,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973737523] [2022-01-18 07:29:51,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973737523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:51,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853989530] [2022-01-18 07:29:51,506 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:29:51,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:51,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:51,507 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:51,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 07:29:51,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:29:51,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:51,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:29:51,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:51,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:51,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853989530] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:51,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:51,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-01-18 07:29:51,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930294480] [2022-01-18 07:29:51,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:51,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:29:51,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:29:51,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:29:51,665 INFO L87 Difference]: Start difference. First operand 1678 states and 6007 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:52,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:52,192 INFO L93 Difference]: Finished difference Result 3256 states and 10823 transitions. [2022-01-18 07:29:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 07:29:52,192 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 07:29:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:52,198 INFO L225 Difference]: With dead ends: 3256 [2022-01-18 07:29:52,199 INFO L226 Difference]: Without dead ends: 3244 [2022-01-18 07:29:52,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=558, Invalid=1794, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 07:29:52,199 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 275 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:52,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 153 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:29:52,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3244 states. [2022-01-18 07:29:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3244 to 1676. [2022-01-18 07:29:52,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1675 states have (on average 3.5797014925373136) internal successors, (5996), 1675 states have internal predecessors, (5996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 5996 transitions. [2022-01-18 07:29:52,235 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 5996 transitions. Word has length 24 [2022-01-18 07:29:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:52,235 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 5996 transitions. [2022-01-18 07:29:52,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:52,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 5996 transitions. [2022-01-18 07:29:52,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:29:52,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:52,238 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:52,254 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-01-18 07:29:52,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:52,439 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:52,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:52,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1154803164, now seen corresponding path program 4 times [2022-01-18 07:29:52,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:52,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884174689] [2022-01-18 07:29:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:52,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:52,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:52,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:52,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884174689] [2022-01-18 07:29:52,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884174689] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:52,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551098917] [2022-01-18 07:29:52,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:29:52,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:52,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:52,670 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:52,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 07:29:52,691 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:29:52,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:52,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:29:52,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:53,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:29:53,103 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:53,104 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-01-18 07:29:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:53,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:53,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:53,311 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:53,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:29:53,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:53,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:53,488 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:53,488 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:29:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:53,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551098917] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:53,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:53,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:29:53,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601399019] [2022-01-18 07:29:53,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:53,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:29:53,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:53,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:29:53,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:29:53,722 INFO L87 Difference]: Start difference. First operand 1676 states and 5996 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:29:55,753 INFO L93 Difference]: Finished difference Result 3843 states and 12416 transitions. [2022-01-18 07:29:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 07:29:55,754 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:29:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:29:55,760 INFO L225 Difference]: With dead ends: 3843 [2022-01-18 07:29:55,760 INFO L226 Difference]: Without dead ends: 3813 [2022-01-18 07:29:55,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=758, Invalid=3148, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 07:29:55,761 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 638 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:29:55,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 254 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:29:55,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3813 states. [2022-01-18 07:29:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3813 to 1792. [2022-01-18 07:29:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1791 states have (on average 3.5907314349525405) internal successors, (6431), 1791 states have internal predecessors, (6431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 6431 transitions. [2022-01-18 07:29:55,798 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 6431 transitions. Word has length 26 [2022-01-18 07:29:55,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:29:55,799 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 6431 transitions. [2022-01-18 07:29:55,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 25 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:29:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 6431 transitions. [2022-01-18 07:29:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:29:55,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:29:55,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:29:55,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 07:29:56,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 07:29:56,003 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:29:56,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:29:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash -873594852, now seen corresponding path program 5 times [2022-01-18 07:29:56,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:29:56,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27906500] [2022-01-18 07:29:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:29:56,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:29:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:29:56,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:56,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:29:56,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27906500] [2022-01-18 07:29:56,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27906500] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:29:56,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706225411] [2022-01-18 07:29:56,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:29:56,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:29:56,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:29:56,200 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:29:56,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 07:29:56,221 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:29:56,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:29:56,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:29:56,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:29:56,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:29:56,537 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:56,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-01-18 07:29:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:56,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:29:56,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:56,797 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:56,797 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:29:56,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:56,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:29:56,966 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:29:56,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:29:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:29:57,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706225411] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:29:57,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:29:57,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 07:29:57,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528480872] [2022-01-18 07:29:57,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:29:57,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:29:57,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:29:57,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:29:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:29:57,224 INFO L87 Difference]: Start difference. First operand 1792 states and 6431 transitions. Second operand has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:01,079 INFO L93 Difference]: Finished difference Result 4418 states and 14016 transitions. [2022-01-18 07:30:01,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 07:30:01,080 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:01,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:01,088 INFO L225 Difference]: With dead ends: 4418 [2022-01-18 07:30:01,088 INFO L226 Difference]: Without dead ends: 4381 [2022-01-18 07:30:01,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3042 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1244, Invalid=7686, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 07:30:01,089 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 614 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:01,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 434 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1821 Invalid, 0 Unknown, 139 Unchecked, 0.9s Time] [2022-01-18 07:30:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4381 states. [2022-01-18 07:30:01,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4381 to 1844. [2022-01-18 07:30:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1843 states have (on average 3.583288117200217) internal successors, (6604), 1843 states have internal predecessors, (6604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 6604 transitions. [2022-01-18 07:30:01,142 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 6604 transitions. Word has length 26 [2022-01-18 07:30:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:01,142 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 6604 transitions. [2022-01-18 07:30:01,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 6604 transitions. [2022-01-18 07:30:01,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:01,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:01,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:01,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 07:30:01,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 07:30:01,346 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:01,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash 717834456, now seen corresponding path program 34 times [2022-01-18 07:30:01,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:01,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879102519] [2022-01-18 07:30:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:01,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:01,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:01,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879102519] [2022-01-18 07:30:01,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879102519] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:01,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215245310] [2022-01-18 07:30:01,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:30:01,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:01,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:01,615 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:01,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 07:30:01,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:30:01,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:01,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:30:01,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:01,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:01,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:01,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2022-01-18 07:30:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:01,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:02,066 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:30:02,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:30:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:02,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215245310] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:02,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:02,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 07:30:02,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190365638] [2022-01-18 07:30:02,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:02,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:30:02,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:30:02,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:30:02,192 INFO L87 Difference]: Start difference. First operand 1844 states and 6604 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:05,022 INFO L93 Difference]: Finished difference Result 3646 states and 12238 transitions. [2022-01-18 07:30:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 07:30:05,022 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:05,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:05,028 INFO L225 Difference]: With dead ends: 3646 [2022-01-18 07:30:05,028 INFO L226 Difference]: Without dead ends: 3616 [2022-01-18 07:30:05,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=943, Invalid=5219, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 07:30:05,029 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 304 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 2100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:05,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 375 Invalid, 2100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:30:05,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2022-01-18 07:30:05,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 1896. [2022-01-18 07:30:05,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1895 states have (on average 3.5736147757255936) internal successors, (6772), 1895 states have internal predecessors, (6772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 6772 transitions. [2022-01-18 07:30:05,069 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 6772 transitions. Word has length 26 [2022-01-18 07:30:05,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:05,069 INFO L470 AbstractCegarLoop]: Abstraction has 1896 states and 6772 transitions. [2022-01-18 07:30:05,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:05,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 6772 transitions. [2022-01-18 07:30:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:05,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:05,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:05,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 07:30:05,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:05,286 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:05,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:05,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1522881632, now seen corresponding path program 6 times [2022-01-18 07:30:05,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:05,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115896968] [2022-01-18 07:30:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:05,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:05,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:05,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:05,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115896968] [2022-01-18 07:30:05,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115896968] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:05,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616374273] [2022-01-18 07:30:05,475 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:30:05,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:05,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:05,476 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:05,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 07:30:05,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:30:05,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:05,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:30:05,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:05,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:05,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:05,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 07:30:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:05,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:05,987 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:06,002 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:06,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:30:06,155 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:06,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:06,168 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:06,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:30:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:06,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616374273] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:06,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:06,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:30:06,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31350412] [2022-01-18 07:30:06,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:06,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:30:06,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:30:06,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:30:06,385 INFO L87 Difference]: Start difference. First operand 1896 states and 6772 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:08,957 INFO L93 Difference]: Finished difference Result 4636 states and 14530 transitions. [2022-01-18 07:30:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 07:30:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:08,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:08,966 INFO L225 Difference]: With dead ends: 4636 [2022-01-18 07:30:08,966 INFO L226 Difference]: Without dead ends: 4621 [2022-01-18 07:30:08,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=992, Invalid=4120, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 07:30:08,968 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 783 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:08,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 365 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1238 Invalid, 0 Unknown, 175 Unchecked, 0.7s Time] [2022-01-18 07:30:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4621 states. [2022-01-18 07:30:09,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4621 to 1956. [2022-01-18 07:30:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1955 states have (on average 3.5611253196930948) internal successors, (6962), 1955 states have internal predecessors, (6962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 6962 transitions. [2022-01-18 07:30:09,014 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 6962 transitions. Word has length 26 [2022-01-18 07:30:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:09,014 INFO L470 AbstractCegarLoop]: Abstraction has 1956 states and 6962 transitions. [2022-01-18 07:30:09,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:09,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 6962 transitions. [2022-01-18 07:30:09,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:09,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:09,018 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:09,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 07:30:09,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 07:30:09,219 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1221704100, now seen corresponding path program 35 times [2022-01-18 07:30:09,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:09,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598094952] [2022-01-18 07:30:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:09,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:09,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:09,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598094952] [2022-01-18 07:30:09,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598094952] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:09,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600921082] [2022-01-18 07:30:09,478 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:30:09,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:09,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:09,479 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:09,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 07:30:09,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:30:09,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:09,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:30:09,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:09,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:09,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:09,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:09,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2022-01-18 07:30:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:09,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:09,921 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:30:09,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:30:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:10,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600921082] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:10,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:10,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 07:30:10,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178229139] [2022-01-18 07:30:10,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:10,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:30:10,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:10,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:30:10,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:30:10,066 INFO L87 Difference]: Start difference. First operand 1956 states and 6962 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:13,665 INFO L93 Difference]: Finished difference Result 4533 states and 14855 transitions. [2022-01-18 07:30:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 07:30:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:13,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:13,675 INFO L225 Difference]: With dead ends: 4533 [2022-01-18 07:30:13,675 INFO L226 Difference]: Without dead ends: 4471 [2022-01-18 07:30:13,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3555 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1607, Invalid=8293, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 07:30:13,677 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 468 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:13,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 536 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 07:30:13,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2022-01-18 07:30:13,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 1997. [2022-01-18 07:30:13,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1997 states, 1996 states have (on average 3.561623246492986) internal successors, (7109), 1996 states have internal predecessors, (7109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1997 states to 1997 states and 7109 transitions. [2022-01-18 07:30:13,728 INFO L78 Accepts]: Start accepts. Automaton has 1997 states and 7109 transitions. Word has length 26 [2022-01-18 07:30:13,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:13,729 INFO L470 AbstractCegarLoop]: Abstraction has 1997 states and 7109 transitions. [2022-01-18 07:30:13,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1997 states and 7109 transitions. [2022-01-18 07:30:13,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:13,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:13,733 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:13,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 07:30:13,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:13,947 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:13,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2096944352, now seen corresponding path program 36 times [2022-01-18 07:30:13,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:13,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159333728] [2022-01-18 07:30:13,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:13,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:14,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159333728] [2022-01-18 07:30:14,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159333728] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:14,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349004903] [2022-01-18 07:30:14,190 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:30:14,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:14,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:14,191 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:14,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 07:30:14,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:30:14,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:14,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:30:14,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:14,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:14,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:14,476 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:14,476 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 47 [2022-01-18 07:30:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:14,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:14,707 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:30:14,708 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:30:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:15,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349004903] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:15,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:15,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2022-01-18 07:30:15,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141039049] [2022-01-18 07:30:15,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:15,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:30:15,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:15,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:30:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:30:15,071 INFO L87 Difference]: Start difference. First operand 1997 states and 7109 transitions. Second operand has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:23,387 INFO L93 Difference]: Finished difference Result 4887 states and 16148 transitions. [2022-01-18 07:30:23,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-18 07:30:23,387 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:23,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:23,396 INFO L225 Difference]: With dead ends: 4887 [2022-01-18 07:30:23,397 INFO L226 Difference]: Without dead ends: 4872 [2022-01-18 07:30:23,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8705 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2599, Invalid=21271, Unknown=0, NotChecked=0, Total=23870 [2022-01-18 07:30:23,398 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 399 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 4088 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 681 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:23,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 912 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4088 Invalid, 0 Unknown, 681 Unchecked, 1.8s Time] [2022-01-18 07:30:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2022-01-18 07:30:23,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 2011. [2022-01-18 07:30:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 2010 states have (on average 3.5621890547263684) internal successors, (7160), 2010 states have internal predecessors, (7160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:23,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 7160 transitions. [2022-01-18 07:30:23,447 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 7160 transitions. Word has length 26 [2022-01-18 07:30:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:23,447 INFO L470 AbstractCegarLoop]: Abstraction has 2011 states and 7160 transitions. [2022-01-18 07:30:23,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 25 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:23,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 7160 transitions. [2022-01-18 07:30:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:23,450 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:23,450 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:23,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 07:30:23,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:23,651 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:23,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash -964441720, now seen corresponding path program 7 times [2022-01-18 07:30:23,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:23,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635272159] [2022-01-18 07:30:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:23,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:23,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:23,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635272159] [2022-01-18 07:30:23,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635272159] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:23,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700546258] [2022-01-18 07:30:23,828 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:30:23,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:23,829 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:23,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 07:30:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:23,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:30:23,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:24,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:24,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:24,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-01-18 07:30:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:24,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:24,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:24,328 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:24,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:30:24,478 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:24,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:24,492 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:24,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:30:24,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:24,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700546258] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:24,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:24,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:30:24,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459684580] [2022-01-18 07:30:24,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:24,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:30:24,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:24,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:30:24,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:30:24,698 INFO L87 Difference]: Start difference. First operand 2011 states and 7160 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:26,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:26,515 INFO L93 Difference]: Finished difference Result 4138 states and 13429 transitions. [2022-01-18 07:30:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 07:30:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:26,522 INFO L225 Difference]: With dead ends: 4138 [2022-01-18 07:30:26,523 INFO L226 Difference]: Without dead ends: 4108 [2022-01-18 07:30:26,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=692, Invalid=2848, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 07:30:26,523 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 467 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:26,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 302 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:30:26,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4108 states. [2022-01-18 07:30:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4108 to 2031. [2022-01-18 07:30:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 2030 states have (on average 3.5610837438423646) internal successors, (7229), 2030 states have internal predecessors, (7229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:26,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 7229 transitions. [2022-01-18 07:30:26,563 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 7229 transitions. Word has length 26 [2022-01-18 07:30:26,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:26,563 INFO L470 AbstractCegarLoop]: Abstraction has 2031 states and 7229 transitions. [2022-01-18 07:30:26,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 7229 transitions. [2022-01-18 07:30:26,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:26,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:26,567 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:26,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 07:30:26,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-18 07:30:26,767 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:26,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2016520892, now seen corresponding path program 8 times [2022-01-18 07:30:26,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:26,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235394884] [2022-01-18 07:30:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:26,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:26,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:26,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235394884] [2022-01-18 07:30:26,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235394884] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:26,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782257419] [2022-01-18 07:30:26,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:30:26,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:26,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:26,967 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:26,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 07:30:26,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:30:26,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:26,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:30:26,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:27,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:27,264 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:27,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 34 [2022-01-18 07:30:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:27,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:27,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:27,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:27,680 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:27,680 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 48 [2022-01-18 07:30:27,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:27,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 5 [2022-01-18 07:30:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:27,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782257419] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:27,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:27,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 07:30:27,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218824849] [2022-01-18 07:30:27,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:27,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:30:27,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:27,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:30:27,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:30:27,876 INFO L87 Difference]: Start difference. First operand 2031 states and 7229 transitions. Second operand has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:33,691 INFO L93 Difference]: Finished difference Result 5067 states and 16485 transitions. [2022-01-18 07:30:33,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 07:30:33,691 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:33,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:33,701 INFO L225 Difference]: With dead ends: 5067 [2022-01-18 07:30:33,701 INFO L226 Difference]: Without dead ends: 5022 [2022-01-18 07:30:33,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3961 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1904, Invalid=9652, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 07:30:33,702 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 629 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 2414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 425 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:33,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 693 Invalid, 2414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1880 Invalid, 0 Unknown, 425 Unchecked, 1.0s Time] [2022-01-18 07:30:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5022 states. [2022-01-18 07:30:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5022 to 2104. [2022-01-18 07:30:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2103 states have (on average 3.5658582976699953) internal successors, (7499), 2103 states have internal predecessors, (7499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 7499 transitions. [2022-01-18 07:30:33,753 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 7499 transitions. Word has length 26 [2022-01-18 07:30:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:33,753 INFO L470 AbstractCegarLoop]: Abstraction has 2104 states and 7499 transitions. [2022-01-18 07:30:33,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 7499 transitions. [2022-01-18 07:30:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:33,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:33,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:33,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 07:30:33,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 07:30:33,958 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash 784538682, now seen corresponding path program 9 times [2022-01-18 07:30:33,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:33,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107521391] [2022-01-18 07:30:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:33,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:34,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107521391] [2022-01-18 07:30:34,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107521391] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013284085] [2022-01-18 07:30:34,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:30:34,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:34,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:34,147 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:34,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 07:30:34,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:30:34,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:34,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:30:34,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:34,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:34,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:34,482 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-01-18 07:30:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:34,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:34,669 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:34,683 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:34,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:30:34,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:34,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:34,838 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:34,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:30:35,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:35,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013284085] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:35,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:35,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:30:35,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632355925] [2022-01-18 07:30:35,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:35,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:30:35,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:35,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:30:35,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:30:35,058 INFO L87 Difference]: Start difference. First operand 2104 states and 7499 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:36,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:36,802 INFO L93 Difference]: Finished difference Result 4259 states and 13862 transitions. [2022-01-18 07:30:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 07:30:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:36,809 INFO L225 Difference]: With dead ends: 4259 [2022-01-18 07:30:36,809 INFO L226 Difference]: Without dead ends: 4244 [2022-01-18 07:30:36,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 33 SyntacticMatches, 5 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=710, Invalid=2950, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:30:36,810 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 503 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:36,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 263 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1122 Invalid, 0 Unknown, 22 Unchecked, 0.6s Time] [2022-01-18 07:30:36,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4244 states. [2022-01-18 07:30:36,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4244 to 2123. [2022-01-18 07:30:36,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2122 states have (on average 3.5607917059377945) internal successors, (7556), 2122 states have internal predecessors, (7556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:36,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 7556 transitions. [2022-01-18 07:30:36,850 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 7556 transitions. Word has length 26 [2022-01-18 07:30:36,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:36,850 INFO L470 AbstractCegarLoop]: Abstraction has 2123 states and 7556 transitions. [2022-01-18 07:30:36,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:36,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 7556 transitions. [2022-01-18 07:30:36,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:36,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:36,854 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:36,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 07:30:37,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 07:30:37,054 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:37,054 INFO L85 PathProgramCache]: Analyzing trace with hash 116575752, now seen corresponding path program 10 times [2022-01-18 07:30:37,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:37,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918504326] [2022-01-18 07:30:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:37,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:37,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:37,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:37,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918504326] [2022-01-18 07:30:37,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918504326] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:37,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145364313] [2022-01-18 07:30:37,250 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:30:37,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:37,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:37,251 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:37,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 07:30:37,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:30:37,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:37,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:30:37,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:37,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:37,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:37,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2022-01-18 07:30:37,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:37,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:37,757 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:37,773 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:37,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:30:37,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:37,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:37,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:37,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:30:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:38,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145364313] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:38,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:38,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:30:38,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420228605] [2022-01-18 07:30:38,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:38,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:30:38,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:38,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:30:38,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:30:38,156 INFO L87 Difference]: Start difference. First operand 2123 states and 7556 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:39,939 INFO L93 Difference]: Finished difference Result 4248 states and 13825 transitions. [2022-01-18 07:30:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 07:30:39,940 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:39,948 INFO L225 Difference]: With dead ends: 4248 [2022-01-18 07:30:39,948 INFO L226 Difference]: Without dead ends: 4241 [2022-01-18 07:30:39,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=710, Invalid=2950, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:30:39,949 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 553 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:39,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 307 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1311 Invalid, 0 Unknown, 109 Unchecked, 0.6s Time] [2022-01-18 07:30:39,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2022-01-18 07:30:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 2112. [2022-01-18 07:30:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2111 states have (on average 3.5641875888204644) internal successors, (7524), 2111 states have internal predecessors, (7524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 7524 transitions. [2022-01-18 07:30:39,993 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 7524 transitions. Word has length 26 [2022-01-18 07:30:39,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:39,993 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 7524 transitions. [2022-01-18 07:30:39,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 7524 transitions. [2022-01-18 07:30:39,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:39,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:39,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:40,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 07:30:40,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:40,198 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:40,198 INFO L85 PathProgramCache]: Analyzing trace with hash -635282148, now seen corresponding path program 11 times [2022-01-18 07:30:40,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:40,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203242466] [2022-01-18 07:30:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:40,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:40,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:40,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203242466] [2022-01-18 07:30:40,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203242466] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:40,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033845121] [2022-01-18 07:30:40,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:30:40,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:40,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:40,372 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:40,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 07:30:40,392 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:30:40,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:40,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:30:40,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:40,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:40,643 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:40,646 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:40,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2022-01-18 07:30:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:40,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:40,891 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:30:40,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:30:41,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:41,021 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:41,033 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:41,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:30:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:41,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033845121] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:41,224 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:41,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:30:41,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573464990] [2022-01-18 07:30:41,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:41,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:30:41,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:41,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:30:41,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:30:41,225 INFO L87 Difference]: Start difference. First operand 2112 states and 7524 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:46,483 INFO L93 Difference]: Finished difference Result 4818 states and 15705 transitions. [2022-01-18 07:30:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 07:30:46,484 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:46,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:46,492 INFO L225 Difference]: With dead ends: 4818 [2022-01-18 07:30:46,492 INFO L226 Difference]: Without dead ends: 4788 [2022-01-18 07:30:46,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3590 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1445, Invalid=9475, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 07:30:46,493 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 416 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 3492 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 3563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:46,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 741 Invalid, 3563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3492 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 07:30:46,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4788 states. [2022-01-18 07:30:46,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4788 to 2127. [2022-01-18 07:30:46,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 2126 states have (on average 3.5696142991533395) internal successors, (7589), 2126 states have internal predecessors, (7589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 7589 transitions. [2022-01-18 07:30:46,539 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 7589 transitions. Word has length 26 [2022-01-18 07:30:46,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:46,540 INFO L470 AbstractCegarLoop]: Abstraction has 2127 states and 7589 transitions. [2022-01-18 07:30:46,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:46,540 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 7589 transitions. [2022-01-18 07:30:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:46,543 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:46,544 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:46,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-01-18 07:30:46,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 07:30:46,745 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1903957512, now seen corresponding path program 12 times [2022-01-18 07:30:46,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:46,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199153220] [2022-01-18 07:30:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:46,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:46,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:46,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:46,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199153220] [2022-01-18 07:30:46,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199153220] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:46,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288691213] [2022-01-18 07:30:46,926 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:30:46,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:46,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:46,927 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:46,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 07:30:46,947 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:30:46,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:46,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:30:46,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:47,183 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-18 07:30:47,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 63 [2022-01-18 07:30:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:47,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:47,436 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:30:47,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:30:47,573 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:47,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:47,586 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:47,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:30:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:47,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288691213] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:47,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:47,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:30:47,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901537115] [2022-01-18 07:30:47,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:47,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:30:47,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:30:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:30:47,762 INFO L87 Difference]: Start difference. First operand 2127 states and 7589 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:52,324 INFO L93 Difference]: Finished difference Result 4503 states and 14748 transitions. [2022-01-18 07:30:52,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 07:30:52,325 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:52,333 INFO L225 Difference]: With dead ends: 4503 [2022-01-18 07:30:52,334 INFO L226 Difference]: Without dead ends: 4473 [2022-01-18 07:30:52,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2738 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1209, Invalid=7163, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 07:30:52,334 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 463 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:52,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 478 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 07:30:52,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4473 states. [2022-01-18 07:30:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4473 to 2130. [2022-01-18 07:30:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2130 states, 2129 states have (on average 3.5720995772663224) internal successors, (7605), 2129 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 7605 transitions. [2022-01-18 07:30:52,382 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 7605 transitions. Word has length 26 [2022-01-18 07:30:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:52,382 INFO L470 AbstractCegarLoop]: Abstraction has 2130 states and 7605 transitions. [2022-01-18 07:30:52,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:52,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 7605 transitions. [2022-01-18 07:30:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:52,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:52,386 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:52,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-18 07:30:52,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 07:30:52,586 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:52,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1496339428, now seen corresponding path program 13 times [2022-01-18 07:30:52,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:52,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533330248] [2022-01-18 07:30:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:52,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:52,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:52,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:52,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533330248] [2022-01-18 07:30:52,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533330248] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:52,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098595284] [2022-01-18 07:30:52,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:30:52,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:52,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:52,785 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:52,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 07:30:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:52,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:30:52,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:53,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:30:53,071 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:53,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-01-18 07:30:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:53,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:53,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:53,286 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:53,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:30:53,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:53,437 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:53,448 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:53,448 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:30:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:53,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098595284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:53,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:53,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:30:53,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925532585] [2022-01-18 07:30:53,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:53,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:30:53,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:53,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:30:53,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:30:53,644 INFO L87 Difference]: Start difference. First operand 2130 states and 7605 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:56,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:30:56,952 INFO L93 Difference]: Finished difference Result 5861 states and 18618 transitions. [2022-01-18 07:30:56,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 07:30:56,952 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:30:56,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:30:56,963 INFO L225 Difference]: With dead ends: 5861 [2022-01-18 07:30:56,963 INFO L226 Difference]: Without dead ends: 5831 [2022-01-18 07:30:56,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 37 SyntacticMatches, 11 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2312 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1359, Invalid=4961, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 07:30:56,964 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 600 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 1966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:30:56,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 472 Invalid, 1966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1613 Invalid, 0 Unknown, 200 Unchecked, 0.8s Time] [2022-01-18 07:30:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5831 states. [2022-01-18 07:30:57,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5831 to 2263. [2022-01-18 07:30:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 3.609637488947834) internal successors, (8165), 2262 states have internal predecessors, (8165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 8165 transitions. [2022-01-18 07:30:57,036 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 8165 transitions. Word has length 26 [2022-01-18 07:30:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:30:57,036 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 8165 transitions. [2022-01-18 07:30:57,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:30:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 8165 transitions. [2022-01-18 07:30:57,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:30:57,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:30:57,042 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:30:57,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-01-18 07:30:57,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:57,242 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:30:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:30:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 93530948, now seen corresponding path program 14 times [2022-01-18 07:30:57,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:30:57,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914734602] [2022-01-18 07:30:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:30:57,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:30:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:30:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:57,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:30:57,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914734602] [2022-01-18 07:30:57,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914734602] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:30:57,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106901708] [2022-01-18 07:30:57,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:30:57,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:30:57,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:30:57,425 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:30:57,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 07:30:57,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:30:57,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:30:57,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:30:57,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:30:57,739 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-18 07:30:57,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 62 [2022-01-18 07:30:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:58,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:30:58,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:58,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:30:58,276 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:30:58,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 55 [2022-01-18 07:30:58,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:30:58,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106901708] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:30:58,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:30:58,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 07:30:58,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965959480] [2022-01-18 07:30:58,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:30:58,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:30:58,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:30:58,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:30:58,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:30:58,505 INFO L87 Difference]: Start difference. First operand 2263 states and 8165 transitions. Second operand has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:11,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:11,656 INFO L93 Difference]: Finished difference Result 6719 states and 22167 transitions. [2022-01-18 07:31:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2022-01-18 07:31:11,656 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:11,669 INFO L225 Difference]: With dead ends: 6719 [2022-01-18 07:31:11,669 INFO L226 Difference]: Without dead ends: 6704 [2022-01-18 07:31:11,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15542 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=5109, Invalid=32721, Unknown=0, NotChecked=0, Total=37830 [2022-01-18 07:31:11,672 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 682 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 3558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 894 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:11,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1057 Invalid, 3558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2526 Invalid, 0 Unknown, 894 Unchecked, 1.3s Time] [2022-01-18 07:31:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6704 states. [2022-01-18 07:31:11,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6704 to 2276. [2022-01-18 07:31:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2275 states have (on average 3.6145054945054946) internal successors, (8223), 2275 states have internal predecessors, (8223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 8223 transitions. [2022-01-18 07:31:11,738 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 8223 transitions. Word has length 26 [2022-01-18 07:31:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:11,738 INFO L470 AbstractCegarLoop]: Abstraction has 2276 states and 8223 transitions. [2022-01-18 07:31:11,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:11,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 8223 transitions. [2022-01-18 07:31:11,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:11,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:11,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:11,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 07:31:11,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-01-18 07:31:11,957 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:11,958 INFO L85 PathProgramCache]: Analyzing trace with hash -957049752, now seen corresponding path program 15 times [2022-01-18 07:31:11,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:11,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650875451] [2022-01-18 07:31:11,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:11,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:12,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:12,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650875451] [2022-01-18 07:31:12,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650875451] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:12,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673186849] [2022-01-18 07:31:12,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:31:12,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:12,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:12,129 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:12,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 07:31:12,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:31:12,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:12,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:31:12,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:12,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:12,373 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:12,373 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2022-01-18 07:31:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:12,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:12,579 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:12,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:12,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:31:12,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:12,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:12,740 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:12,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:12,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673186849] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:12,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:12,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:31:12,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867109024] [2022-01-18 07:31:12,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:12,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:31:12,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:12,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:31:12,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:31:12,951 INFO L87 Difference]: Start difference. First operand 2276 states and 8223 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:17,068 INFO L93 Difference]: Finished difference Result 6246 states and 20287 transitions. [2022-01-18 07:31:17,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 07:31:17,069 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:17,082 INFO L225 Difference]: With dead ends: 6246 [2022-01-18 07:31:17,082 INFO L226 Difference]: Without dead ends: 6216 [2022-01-18 07:31:17,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2855 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1670, Invalid=6340, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 07:31:17,083 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 670 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:17,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [670 Valid, 559 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1829 Invalid, 0 Unknown, 247 Unchecked, 0.9s Time] [2022-01-18 07:31:17,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2022-01-18 07:31:17,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 2308. [2022-01-18 07:31:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2308 states, 2307 states have (on average 3.6289553532726484) internal successors, (8372), 2307 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:17,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 8372 transitions. [2022-01-18 07:31:17,145 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 8372 transitions. Word has length 26 [2022-01-18 07:31:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:17,145 INFO L470 AbstractCegarLoop]: Abstraction has 2308 states and 8372 transitions. [2022-01-18 07:31:17,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:17,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 8372 transitions. [2022-01-18 07:31:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:17,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:17,149 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:17,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 07:31:17,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:17,350 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:17,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:17,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1503265304, now seen corresponding path program 16 times [2022-01-18 07:31:17,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:17,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866201149] [2022-01-18 07:31:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:17,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:17,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:17,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866201149] [2022-01-18 07:31:17,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866201149] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:17,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205333981] [2022-01-18 07:31:17,530 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:31:17,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:17,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:17,531 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:17,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 07:31:17,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:31:17,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:17,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:31:17,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:17,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:17,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:17,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-01-18 07:31:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:17,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:18,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:18,041 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:18,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:31:18,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:18,185 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:18,196 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:18,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:18,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:18,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205333981] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:18,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:18,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:31:18,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501749037] [2022-01-18 07:31:18,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:18,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:31:18,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:31:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:31:18,408 INFO L87 Difference]: Start difference. First operand 2308 states and 8372 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:21,056 INFO L93 Difference]: Finished difference Result 5384 states and 17521 transitions. [2022-01-18 07:31:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 07:31:21,056 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:21,067 INFO L225 Difference]: With dead ends: 5384 [2022-01-18 07:31:21,067 INFO L226 Difference]: Without dead ends: 5369 [2022-01-18 07:31:21,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1126, Invalid=4130, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 07:31:21,068 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 476 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:21,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 425 Invalid, 1947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1566 Invalid, 0 Unknown, 269 Unchecked, 0.7s Time] [2022-01-18 07:31:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2022-01-18 07:31:21,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 2294. [2022-01-18 07:31:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2293 states have (on average 3.6240732664631485) internal successors, (8310), 2293 states have internal predecessors, (8310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 8310 transitions. [2022-01-18 07:31:21,120 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 8310 transitions. Word has length 26 [2022-01-18 07:31:21,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:21,120 INFO L470 AbstractCegarLoop]: Abstraction has 2294 states and 8310 transitions. [2022-01-18 07:31:21,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:21,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 8310 transitions. [2022-01-18 07:31:21,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:21,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:21,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:21,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 07:31:21,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-18 07:31:21,324 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash -705646396, now seen corresponding path program 17 times [2022-01-18 07:31:21,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:21,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894312137] [2022-01-18 07:31:21,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:21,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:21,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:21,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894312137] [2022-01-18 07:31:21,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894312137] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:21,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108836564] [2022-01-18 07:31:21,536 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:31:21,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:21,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:21,537 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:21,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 07:31:21,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:31:21,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:21,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:31:21,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:21,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:21,829 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:21,830 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-01-18 07:31:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:21,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:22,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:22,075 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:22,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:31:22,225 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:22,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:22,243 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:22,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:22,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:22,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108836564] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:22,566 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:22,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 07:31:22,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227317873] [2022-01-18 07:31:22,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:22,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:31:22,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:22,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:31:22,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:31:22,567 INFO L87 Difference]: Start difference. First operand 2294 states and 8310 transitions. Second operand has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:26,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:26,934 INFO L93 Difference]: Finished difference Result 4714 states and 15312 transitions. [2022-01-18 07:31:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 07:31:26,935 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:26,943 INFO L225 Difference]: With dead ends: 4714 [2022-01-18 07:31:26,943 INFO L226 Difference]: Without dead ends: 4651 [2022-01-18 07:31:26,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3164 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1261, Invalid=8639, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 07:31:26,944 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 467 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 2186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:26,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [467 Valid, 549 Invalid, 2186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 07:31:26,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2022-01-18 07:31:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 2420. [2022-01-18 07:31:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 2419 states have (on average 3.6143034311699047) internal successors, (8743), 2419 states have internal predecessors, (8743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 8743 transitions. [2022-01-18 07:31:26,991 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 8743 transitions. Word has length 26 [2022-01-18 07:31:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:26,991 INFO L470 AbstractCegarLoop]: Abstraction has 2420 states and 8743 transitions. [2022-01-18 07:31:26,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.185185185185185) internal successors, (59), 27 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 8743 transitions. [2022-01-18 07:31:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:26,995 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:26,995 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:27,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 07:31:27,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 07:31:27,195 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:27,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:27,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1190773488, now seen corresponding path program 18 times [2022-01-18 07:31:27,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:27,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228946397] [2022-01-18 07:31:27,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:27,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:27,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:27,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228946397] [2022-01-18 07:31:27,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228946397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:27,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838735416] [2022-01-18 07:31:27,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:31:27,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:27,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:27,396 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:27,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 07:31:27,416 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:31:27,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:27,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:31:27,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:27,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:27,655 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:27,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 07:31:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:27,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:27,924 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:31:27,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:31:28,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:28,072 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:28,084 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:28,084 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:28,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838735416] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:28,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:28,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:31:28,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168210396] [2022-01-18 07:31:28,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:28,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:31:28,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:31:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:31:28,275 INFO L87 Difference]: Start difference. First operand 2420 states and 8743 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:30,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:30,860 INFO L93 Difference]: Finished difference Result 4407 states and 14743 transitions. [2022-01-18 07:31:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 07:31:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:30,868 INFO L225 Difference]: With dead ends: 4407 [2022-01-18 07:31:30,868 INFO L226 Difference]: Without dead ends: 4377 [2022-01-18 07:31:30,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=663, Invalid=4307, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 07:31:30,869 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 274 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 2245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:30,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 467 Invalid, 2245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:31:30,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4377 states. [2022-01-18 07:31:30,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4377 to 2375. [2022-01-18 07:31:30,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2375 states, 2374 states have (on average 3.608677337826453) internal successors, (8567), 2374 states have internal predecessors, (8567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2375 states to 2375 states and 8567 transitions. [2022-01-18 07:31:30,918 INFO L78 Accepts]: Start accepts. Automaton has 2375 states and 8567 transitions. Word has length 26 [2022-01-18 07:31:30,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:30,918 INFO L470 AbstractCegarLoop]: Abstraction has 2375 states and 8567 transitions. [2022-01-18 07:31:30,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2375 states and 8567 transitions. [2022-01-18 07:31:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:30,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:30,922 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:30,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 07:31:31,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:31,130 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:31,130 INFO L85 PathProgramCache]: Analyzing trace with hash -376486824, now seen corresponding path program 19 times [2022-01-18 07:31:31,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:31,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749199824] [2022-01-18 07:31:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:31,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:31,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:31,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:31,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749199824] [2022-01-18 07:31:31,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749199824] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:31,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081215919] [2022-01-18 07:31:31,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:31:31,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:31,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:31,308 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:31,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 07:31:31,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:31,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:31:31,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:31,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:31,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:31,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2022-01-18 07:31:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:31,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:31,782 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:31,797 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:31,797 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:31:31,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:31,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:31,958 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:31,958 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:32,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:32,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081215919] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:32,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:32,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:31:32,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540378612] [2022-01-18 07:31:32,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:32,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:31:32,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:32,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:31:32,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:31:32,158 INFO L87 Difference]: Start difference. First operand 2375 states and 8567 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:34,199 INFO L93 Difference]: Finished difference Result 4514 states and 14946 transitions. [2022-01-18 07:31:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 07:31:34,200 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:34,208 INFO L225 Difference]: With dead ends: 4514 [2022-01-18 07:31:34,208 INFO L226 Difference]: Without dead ends: 4451 [2022-01-18 07:31:34,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=686, Invalid=3096, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 07:31:34,209 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 414 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:34,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 289 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:31:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4451 states. [2022-01-18 07:31:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4451 to 2441. [2022-01-18 07:31:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2441 states, 2440 states have (on average 3.6176229508196722) internal successors, (8827), 2440 states have internal predecessors, (8827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:34,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2441 states to 2441 states and 8827 transitions. [2022-01-18 07:31:34,256 INFO L78 Accepts]: Start accepts. Automaton has 2441 states and 8827 transitions. Word has length 26 [2022-01-18 07:31:34,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:34,256 INFO L470 AbstractCegarLoop]: Abstraction has 2441 states and 8827 transitions. [2022-01-18 07:31:34,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:34,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2441 states and 8827 transitions. [2022-01-18 07:31:34,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:34,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:34,260 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:34,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-18 07:31:34,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:34,462 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:34,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1635493100, now seen corresponding path program 20 times [2022-01-18 07:31:34,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:34,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224946396] [2022-01-18 07:31:34,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:34,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:34,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:34,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224946396] [2022-01-18 07:31:34,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224946396] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:34,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882159962] [2022-01-18 07:31:34,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:31:34,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:34,654 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:34,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 07:31:34,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:31:34,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:34,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:31:34,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:34,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:34,910 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:34,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-01-18 07:31:35,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:35,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:35,219 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:35,219 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:31:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:36,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882159962] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:36,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:36,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:31:36,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964539676] [2022-01-18 07:31:36,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:36,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:31:36,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:36,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:31:36,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:31:36,047 INFO L87 Difference]: Start difference. First operand 2441 states and 8827 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:39,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:39,181 INFO L93 Difference]: Finished difference Result 5089 states and 16612 transitions. [2022-01-18 07:31:39,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 07:31:39,182 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:39,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:39,191 INFO L225 Difference]: With dead ends: 5089 [2022-01-18 07:31:39,191 INFO L226 Difference]: Without dead ends: 5021 [2022-01-18 07:31:39,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1091, Invalid=4311, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 07:31:39,191 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 486 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:39,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 417 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1090 Invalid, 0 Unknown, 519 Unchecked, 0.6s Time] [2022-01-18 07:31:39,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5021 states. [2022-01-18 07:31:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5021 to 2432. [2022-01-18 07:31:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2432 states, 2431 states have (on average 3.6199095022624435) internal successors, (8800), 2431 states have internal predecessors, (8800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:39,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2432 states to 2432 states and 8800 transitions. [2022-01-18 07:31:39,242 INFO L78 Accepts]: Start accepts. Automaton has 2432 states and 8800 transitions. Word has length 26 [2022-01-18 07:31:39,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:39,242 INFO L470 AbstractCegarLoop]: Abstraction has 2432 states and 8800 transitions. [2022-01-18 07:31:39,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2432 states and 8800 transitions. [2022-01-18 07:31:39,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:39,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:39,246 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:39,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-18 07:31:39,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:39,446 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -913979680, now seen corresponding path program 21 times [2022-01-18 07:31:39,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:39,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920503370] [2022-01-18 07:31:39,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:39,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:39,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:39,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920503370] [2022-01-18 07:31:39,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920503370] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:39,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240035636] [2022-01-18 07:31:39,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:31:39,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:39,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:39,647 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:39,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:31:39,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:39,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:31:39,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:39,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 07:31:40,002 INFO L353 Elim1Store]: treesize reduction 29, result has 40.8 percent of original size [2022-01-18 07:31:40,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 77 [2022-01-18 07:31:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:40,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:40,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:40,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:40,348 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:40,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 48 [2022-01-18 07:31:40,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:40,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 5 [2022-01-18 07:31:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:40,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240035636] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:40,554 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:40,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 27 [2022-01-18 07:31:40,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693744512] [2022-01-18 07:31:40,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:40,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:31:40,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:40,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:31:40,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:31:40,554 INFO L87 Difference]: Start difference. First operand 2432 states and 8800 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:43,266 INFO L93 Difference]: Finished difference Result 4523 states and 15293 transitions. [2022-01-18 07:31:43,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 07:31:43,267 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:43,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:43,275 INFO L225 Difference]: With dead ends: 4523 [2022-01-18 07:31:43,275 INFO L226 Difference]: Without dead ends: 4460 [2022-01-18 07:31:43,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=739, Invalid=3817, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 07:31:43,276 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 371 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:43,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 333 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:31:43,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4460 states. [2022-01-18 07:31:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4460 to 2477. [2022-01-18 07:31:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2477 states, 2476 states have (on average 3.6163166397415187) internal successors, (8954), 2476 states have internal predecessors, (8954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:43,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2477 states to 2477 states and 8954 transitions. [2022-01-18 07:31:43,332 INFO L78 Accepts]: Start accepts. Automaton has 2477 states and 8954 transitions. Word has length 26 [2022-01-18 07:31:43,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:43,332 INFO L470 AbstractCegarLoop]: Abstraction has 2477 states and 8954 transitions. [2022-01-18 07:31:43,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 27 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:43,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2477 states and 8954 transitions. [2022-01-18 07:31:43,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:43,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:43,337 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:43,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-18 07:31:43,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 07:31:43,548 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:43,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:43,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2121981340, now seen corresponding path program 22 times [2022-01-18 07:31:43,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:43,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095911622] [2022-01-18 07:31:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:43,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:43,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:43,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095911622] [2022-01-18 07:31:43,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095911622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:43,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296620279] [2022-01-18 07:31:43,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:31:43,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:43,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:43,736 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:43,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 07:31:43,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:31:43,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:43,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:31:43,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:43,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:43,999 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:43,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 07:31:44,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:44,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:44,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:44,213 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:44,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:31:44,336 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:44,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:44,350 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:44,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:44,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296620279] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:44,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:44,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:31:44,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470416990] [2022-01-18 07:31:44,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:44,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:31:44,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:44,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:31:44,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:31:44,538 INFO L87 Difference]: Start difference. First operand 2477 states and 8954 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:47,388 INFO L93 Difference]: Finished difference Result 5345 states and 17184 transitions. [2022-01-18 07:31:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 07:31:47,389 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:47,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:47,399 INFO L225 Difference]: With dead ends: 5345 [2022-01-18 07:31:47,399 INFO L226 Difference]: Without dead ends: 5214 [2022-01-18 07:31:47,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1792 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1064, Invalid=4486, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 07:31:47,400 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 404 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:47,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 440 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:31:47,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5214 states. [2022-01-18 07:31:47,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5214 to 2604. [2022-01-18 07:31:47,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2603 states have (on average 3.606607760276604) internal successors, (9388), 2603 states have internal predecessors, (9388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:47,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 9388 transitions. [2022-01-18 07:31:47,460 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 9388 transitions. Word has length 26 [2022-01-18 07:31:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:47,461 INFO L470 AbstractCegarLoop]: Abstraction has 2604 states and 9388 transitions. [2022-01-18 07:31:47,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:47,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 9388 transitions. [2022-01-18 07:31:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:47,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:47,465 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:47,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 07:31:47,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 07:31:47,665 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:47,666 INFO L85 PathProgramCache]: Analyzing trace with hash 193303520, now seen corresponding path program 23 times [2022-01-18 07:31:47,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:47,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039175955] [2022-01-18 07:31:47,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:47,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:47,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:47,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039175955] [2022-01-18 07:31:47,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039175955] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:47,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412748650] [2022-01-18 07:31:47,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:31:47,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:47,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:47,848 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:47,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 07:31:47,869 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:31:47,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:47,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:31:47,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:48,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:48,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:48,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-01-18 07:31:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:48,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:48,329 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:31:48,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 55 [2022-01-18 07:31:48,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:48,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:48,490 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:48,491 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:48,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412748650] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:48,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:48,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 07:31:48,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849206408] [2022-01-18 07:31:48,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:48,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:31:48,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:31:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:31:48,699 INFO L87 Difference]: Start difference. First operand 2604 states and 9388 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:49,586 INFO L93 Difference]: Finished difference Result 3796 states and 12810 transitions. [2022-01-18 07:31:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 07:31:49,586 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:49,593 INFO L225 Difference]: With dead ends: 3796 [2022-01-18 07:31:49,593 INFO L226 Difference]: Without dead ends: 3766 [2022-01-18 07:31:49,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:31:49,593 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 149 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:49,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 243 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1086 Invalid, 0 Unknown, 68 Unchecked, 0.4s Time] [2022-01-18 07:31:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2022-01-18 07:31:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 2614. [2022-01-18 07:31:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2614 states, 2613 states have (on average 3.6069651741293534) internal successors, (9425), 2613 states have internal predecessors, (9425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2614 states to 2614 states and 9425 transitions. [2022-01-18 07:31:49,635 INFO L78 Accepts]: Start accepts. Automaton has 2614 states and 9425 transitions. Word has length 26 [2022-01-18 07:31:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:49,635 INFO L470 AbstractCegarLoop]: Abstraction has 2614 states and 9425 transitions. [2022-01-18 07:31:49,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2614 states and 9425 transitions. [2022-01-18 07:31:49,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:49,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:49,639 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:49,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 07:31:49,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:49,839 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1764129120, now seen corresponding path program 24 times [2022-01-18 07:31:49,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:49,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134961370] [2022-01-18 07:31:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:49,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:50,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:50,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134961370] [2022-01-18 07:31:50,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134961370] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:50,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385352162] [2022-01-18 07:31:50,015 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:31:50,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:50,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:50,016 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:50,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 07:31:50,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:31:50,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:50,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:31:50,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:50,260 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-18 07:31:50,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 63 [2022-01-18 07:31:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:50,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:50,545 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:31:50,545 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:31:50,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:50,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:50,689 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:50,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:50,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385352162] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:50,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:50,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:31:50,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197681836] [2022-01-18 07:31:50,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:50,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:31:50,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:50,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:31:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:31:50,886 INFO L87 Difference]: Start difference. First operand 2614 states and 9425 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:53,129 INFO L93 Difference]: Finished difference Result 4986 states and 16584 transitions. [2022-01-18 07:31:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 07:31:53,129 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:53,138 INFO L225 Difference]: With dead ends: 4986 [2022-01-18 07:31:53,138 INFO L226 Difference]: Without dead ends: 4891 [2022-01-18 07:31:53,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1616 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=788, Invalid=4468, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 07:31:53,139 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 380 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:53,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 310 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:31:53,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4891 states. [2022-01-18 07:31:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4891 to 2627. [2022-01-18 07:31:53,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2627 states, 2626 states have (on average 3.6085300837776084) internal successors, (9476), 2626 states have internal predecessors, (9476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 9476 transitions. [2022-01-18 07:31:53,196 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 9476 transitions. Word has length 26 [2022-01-18 07:31:53,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:53,196 INFO L470 AbstractCegarLoop]: Abstraction has 2627 states and 9476 transitions. [2022-01-18 07:31:53,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:53,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 9476 transitions. [2022-01-18 07:31:53,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:53,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:53,201 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:53,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 07:31:53,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:53,401 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:53,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:53,401 INFO L85 PathProgramCache]: Analyzing trace with hash -340731392, now seen corresponding path program 25 times [2022-01-18 07:31:53,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:53,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114067489] [2022-01-18 07:31:53,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:53,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:53,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114067489] [2022-01-18 07:31:53,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114067489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117295446] [2022-01-18 07:31:53,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:31:53,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:53,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:53,604 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:53,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 07:31:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:53,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:31:53,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:54,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:54,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-01-18 07:31:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:54,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:54,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:54,293 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:54,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:31:54,422 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:54,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:31:54,435 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:54,435 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:31:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:54,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117295446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:54,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:54,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:31:54,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373056145] [2022-01-18 07:31:54,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:54,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:31:54,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:31:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:31:54,641 INFO L87 Difference]: Start difference. First operand 2627 states and 9476 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:55,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:31:55,957 INFO L93 Difference]: Finished difference Result 4453 states and 14888 transitions. [2022-01-18 07:31:55,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 07:31:55,957 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:31:55,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:31:55,965 INFO L225 Difference]: With dead ends: 4453 [2022-01-18 07:31:55,965 INFO L226 Difference]: Without dead ends: 4413 [2022-01-18 07:31:55,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1006 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=603, Invalid=2589, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 07:31:55,966 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 342 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:31:55,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 236 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 716 Invalid, 0 Unknown, 176 Unchecked, 0.4s Time] [2022-01-18 07:31:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2022-01-18 07:31:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 2673. [2022-01-18 07:31:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2672 states have (on average 3.6096556886227544) internal successors, (9645), 2672 states have internal predecessors, (9645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 9645 transitions. [2022-01-18 07:31:56,014 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 9645 transitions. Word has length 26 [2022-01-18 07:31:56,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:31:56,014 INFO L470 AbstractCegarLoop]: Abstraction has 2673 states and 9645 transitions. [2022-01-18 07:31:56,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:31:56,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 9645 transitions. [2022-01-18 07:31:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:31:56,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:31:56,018 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:31:56,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 07:31:56,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:56,220 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:31:56,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:31:56,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1958264172, now seen corresponding path program 26 times [2022-01-18 07:31:56,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:31:56,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095700705] [2022-01-18 07:31:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:31:56,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:31:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:31:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:56,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:31:56,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095700705] [2022-01-18 07:31:56,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095700705] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:31:56,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570381642] [2022-01-18 07:31:56,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:31:56,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:31:56,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:31:56,414 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:31:56,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 07:31:56,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:31:56,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:31:56,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:31:56,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:31:56,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:31:56,664 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:56,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-01-18 07:31:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:56,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:31:56,945 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:31:56,945 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:31:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:31:57,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570381642] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:31:57,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:31:57,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:31:57,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841631329] [2022-01-18 07:31:57,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:31:57,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:31:57,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:31:57,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:31:57,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:31:57,705 INFO L87 Difference]: Start difference. First operand 2673 states and 9645 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:00,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:00,818 INFO L93 Difference]: Finished difference Result 4963 states and 16602 transitions. [2022-01-18 07:32:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 07:32:00,818 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:00,827 INFO L225 Difference]: With dead ends: 4963 [2022-01-18 07:32:00,827 INFO L226 Difference]: Without dead ends: 4919 [2022-01-18 07:32:00,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 45 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2051 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1193, Invalid=4659, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 07:32:00,828 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 473 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:00,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 303 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 916 Invalid, 0 Unknown, 173 Unchecked, 0.5s Time] [2022-01-18 07:32:00,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2022-01-18 07:32:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 2690. [2022-01-18 07:32:00,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2689 states have (on average 3.6106359241353663) internal successors, (9709), 2689 states have internal predecessors, (9709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 9709 transitions. [2022-01-18 07:32:00,880 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 9709 transitions. Word has length 26 [2022-01-18 07:32:00,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:00,880 INFO L470 AbstractCegarLoop]: Abstraction has 2690 states and 9709 transitions. [2022-01-18 07:32:00,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 9709 transitions. [2022-01-18 07:32:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:00,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:00,885 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:00,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 07:32:01,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:01,085 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:01,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:01,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1158422128, now seen corresponding path program 27 times [2022-01-18 07:32:01,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:01,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662587957] [2022-01-18 07:32:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:01,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:01,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:01,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662587957] [2022-01-18 07:32:01,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662587957] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:01,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835758207] [2022-01-18 07:32:01,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:32:01,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:01,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:01,247 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:01,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 07:32:01,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:32:01,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:01,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:32:01,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:01,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:01,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:01,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2022-01-18 07:32:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:01,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:01,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:01,719 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:01,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:32:01,850 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:01,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:01,863 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:01,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:32:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:02,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835758207] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:02,113 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:02,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:32:02,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7216402] [2022-01-18 07:32:02,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:02,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:32:02,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:32:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:32:02,114 INFO L87 Difference]: Start difference. First operand 2690 states and 9709 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:04,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:04,320 INFO L93 Difference]: Finished difference Result 5009 states and 16652 transitions. [2022-01-18 07:32:04,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 07:32:04,320 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:04,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:04,330 INFO L225 Difference]: With dead ends: 5009 [2022-01-18 07:32:04,330 INFO L226 Difference]: Without dead ends: 4969 [2022-01-18 07:32:04,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=964, Invalid=3728, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 07:32:04,331 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 414 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:04,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 332 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1016 Invalid, 0 Unknown, 167 Unchecked, 0.5s Time] [2022-01-18 07:32:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4969 states. [2022-01-18 07:32:04,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4969 to 2690. [2022-01-18 07:32:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2689 states have (on average 3.611751580513202) internal successors, (9712), 2689 states have internal predecessors, (9712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:04,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 9712 transitions. [2022-01-18 07:32:04,388 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 9712 transitions. Word has length 26 [2022-01-18 07:32:04,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:04,388 INFO L470 AbstractCegarLoop]: Abstraction has 2690 states and 9712 transitions. [2022-01-18 07:32:04,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 9712 transitions. [2022-01-18 07:32:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:04,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:04,393 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:04,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:04,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 07:32:04,593 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:04,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:04,594 INFO L85 PathProgramCache]: Analyzing trace with hash 646760220, now seen corresponding path program 28 times [2022-01-18 07:32:04,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:04,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728029540] [2022-01-18 07:32:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:04,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:04,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:04,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728029540] [2022-01-18 07:32:04,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728029540] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:04,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858368575] [2022-01-18 07:32:04,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:32:04,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:04,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:04,755 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:04,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 07:32:04,777 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:32:04,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:04,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:32:04,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:05,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:05,040 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:05,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-01-18 07:32:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:05,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:05,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:05,245 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:05,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 20 treesize of output 55 [2022-01-18 07:32:05,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:05,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:05,408 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:05,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:32:05,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:05,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858368575] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:05,601 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:05,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-01-18 07:32:05,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307343397] [2022-01-18 07:32:05,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:05,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:32:05,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:32:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:32:05,602 INFO L87 Difference]: Start difference. First operand 2690 states and 9712 transitions. Second operand has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:07,208 INFO L93 Difference]: Finished difference Result 4644 states and 15587 transitions. [2022-01-18 07:32:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 07:32:07,208 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:07,217 INFO L225 Difference]: With dead ends: 4644 [2022-01-18 07:32:07,217 INFO L226 Difference]: Without dead ends: 4579 [2022-01-18 07:32:07,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 34 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1089 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=672, Invalid=2750, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 07:32:07,218 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 429 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:07,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 246 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 873 Invalid, 0 Unknown, 115 Unchecked, 0.4s Time] [2022-01-18 07:32:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2022-01-18 07:32:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 2697. [2022-01-18 07:32:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2696 states have (on average 3.615727002967359) internal successors, (9748), 2696 states have internal predecessors, (9748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 9748 transitions. [2022-01-18 07:32:07,289 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 9748 transitions. Word has length 26 [2022-01-18 07:32:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:07,290 INFO L470 AbstractCegarLoop]: Abstraction has 2697 states and 9748 transitions. [2022-01-18 07:32:07,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 9748 transitions. [2022-01-18 07:32:07,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:07,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:07,294 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:07,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:07,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:07,494 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:07,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash -599960430, now seen corresponding path program 29 times [2022-01-18 07:32:07,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:07,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215148966] [2022-01-18 07:32:07,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:07,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:07,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215148966] [2022-01-18 07:32:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215148966] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83189876] [2022-01-18 07:32:07,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:32:07,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:07,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:07,692 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:07,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 07:32:07,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:32:07,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:32:07,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:07,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:07,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:07,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2022-01-18 07:32:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:08,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:08,245 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:08,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-01-18 07:32:08,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 6 [2022-01-18 07:32:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:08,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83189876] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:08,295 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:08,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 26 [2022-01-18 07:32:08,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743223677] [2022-01-18 07:32:08,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:08,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:32:08,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:08,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:32:08,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:32:08,296 INFO L87 Difference]: Start difference. First operand 2697 states and 9748 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:09,635 INFO L93 Difference]: Finished difference Result 4289 states and 14868 transitions. [2022-01-18 07:32:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 07:32:09,635 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:09,643 INFO L225 Difference]: With dead ends: 4289 [2022-01-18 07:32:09,644 INFO L226 Difference]: Without dead ends: 4267 [2022-01-18 07:32:09,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=589, Invalid=2833, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 07:32:09,644 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 241 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 684 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:09,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 299 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 763 Invalid, 0 Unknown, 684 Unchecked, 0.3s Time] [2022-01-18 07:32:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-01-18 07:32:09,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 2721. [2022-01-18 07:32:09,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2720 states have (on average 3.6121323529411766) internal successors, (9825), 2720 states have internal predecessors, (9825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 9825 transitions. [2022-01-18 07:32:09,705 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 9825 transitions. Word has length 26 [2022-01-18 07:32:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:09,705 INFO L470 AbstractCegarLoop]: Abstraction has 2721 states and 9825 transitions. [2022-01-18 07:32:09,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 9825 transitions. [2022-01-18 07:32:09,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:09,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:09,710 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:09,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:09,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-18 07:32:09,923 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 179145086, now seen corresponding path program 30 times [2022-01-18 07:32:09,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:09,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562214861] [2022-01-18 07:32:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:09,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:10,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:10,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562214861] [2022-01-18 07:32:10,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562214861] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:10,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563191089] [2022-01-18 07:32:10,106 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:32:10,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:10,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:10,107 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:10,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 07:32:10,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:32:10,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:10,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:32:10,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:10,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:10,372 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:10,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2022-01-18 07:32:10,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:10,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:10,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:10,599 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:10,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:32:10,729 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:10,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:10,743 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:10,743 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:32:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:10,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563191089] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:10,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:10,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:32:10,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420977763] [2022-01-18 07:32:10,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:10,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:32:10,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:32:10,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:32:10,964 INFO L87 Difference]: Start difference. First operand 2721 states and 9825 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:13,127 INFO L93 Difference]: Finished difference Result 5079 states and 16896 transitions. [2022-01-18 07:32:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 07:32:13,127 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:13,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:13,137 INFO L225 Difference]: With dead ends: 5079 [2022-01-18 07:32:13,137 INFO L226 Difference]: Without dead ends: 5064 [2022-01-18 07:32:13,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=961, Invalid=3731, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 07:32:13,138 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 429 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 965 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:13,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 341 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 965 Invalid, 0 Unknown, 202 Unchecked, 0.5s Time] [2022-01-18 07:32:13,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5064 states. [2022-01-18 07:32:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5064 to 2727. [2022-01-18 07:32:13,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2726 states have (on average 3.611885546588408) internal successors, (9846), 2726 states have internal predecessors, (9846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:13,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 9846 transitions. [2022-01-18 07:32:13,199 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 9846 transitions. Word has length 26 [2022-01-18 07:32:13,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:13,199 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 9846 transitions. [2022-01-18 07:32:13,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:13,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 9846 transitions. [2022-01-18 07:32:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:13,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:13,203 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:13,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-01-18 07:32:13,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-18 07:32:13,404 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash -706653194, now seen corresponding path program 31 times [2022-01-18 07:32:13,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:13,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816929003] [2022-01-18 07:32:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:13,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:13,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:13,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816929003] [2022-01-18 07:32:13,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816929003] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:13,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298889077] [2022-01-18 07:32:13,583 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:32:13,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:13,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:13,584 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:13,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 07:32:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:13,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:32:13,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:13,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:13,868 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:13,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-01-18 07:32:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:13,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:14,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:14,073 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:14,074 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 20 treesize of output 55 [2022-01-18 07:32:14,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:14,209 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:14,220 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:14,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:32:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:14,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298889077] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:14,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:14,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-01-18 07:32:14,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590375661] [2022-01-18 07:32:14,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:14,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:32:14,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:32:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:32:14,432 INFO L87 Difference]: Start difference. First operand 2727 states and 9846 transitions. Second operand has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:16,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:16,080 INFO L93 Difference]: Finished difference Result 4598 states and 15470 transitions. [2022-01-18 07:32:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:32:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:16,089 INFO L225 Difference]: With dead ends: 4598 [2022-01-18 07:32:16,089 INFO L226 Difference]: Without dead ends: 4562 [2022-01-18 07:32:16,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=707, Invalid=2953, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:32:16,090 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 350 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:16,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 332 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 789 Invalid, 0 Unknown, 226 Unchecked, 0.4s Time] [2022-01-18 07:32:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4562 states. [2022-01-18 07:32:16,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4562 to 2727. [2022-01-18 07:32:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2726 states have (on average 3.611885546588408) internal successors, (9846), 2726 states have internal predecessors, (9846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:16,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 9846 transitions. [2022-01-18 07:32:16,143 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 9846 transitions. Word has length 26 [2022-01-18 07:32:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:16,143 INFO L470 AbstractCegarLoop]: Abstraction has 2727 states and 9846 transitions. [2022-01-18 07:32:16,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:16,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 9846 transitions. [2022-01-18 07:32:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:16,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:16,148 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:16,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 07:32:16,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 07:32:16,348 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:16,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash 902763630, now seen corresponding path program 37 times [2022-01-18 07:32:16,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:16,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041163990] [2022-01-18 07:32:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:16,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:16,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:16,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:16,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041163990] [2022-01-18 07:32:16,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041163990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:16,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287612537] [2022-01-18 07:32:16,663 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:32:16,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:16,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:16,664 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:16,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 07:32:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:16,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:32:16,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:16,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:16,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:16,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:16,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:16,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-01-18 07:32:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:16,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:17,100 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:32:17,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:32:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:17,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287612537] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:17,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:17,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 07:32:17,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524117210] [2022-01-18 07:32:17,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:17,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:32:17,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:17,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:32:17,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:32:17,314 INFO L87 Difference]: Start difference. First operand 2727 states and 9846 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:18,966 INFO L93 Difference]: Finished difference Result 4463 states and 15278 transitions. [2022-01-18 07:32:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 07:32:18,967 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:18,975 INFO L225 Difference]: With dead ends: 4463 [2022-01-18 07:32:18,976 INFO L226 Difference]: Without dead ends: 4433 [2022-01-18 07:32:18,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1276 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=629, Invalid=3661, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 07:32:18,976 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 253 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:18,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 302 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:32:18,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-01-18 07:32:19,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 2753. [2022-01-18 07:32:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 3.6071947674418605) internal successors, (9927), 2752 states have internal predecessors, (9927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 9927 transitions. [2022-01-18 07:32:19,027 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 9927 transitions. Word has length 26 [2022-01-18 07:32:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:19,027 INFO L470 AbstractCegarLoop]: Abstraction has 2753 states and 9927 transitions. [2022-01-18 07:32:19,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 9927 transitions. [2022-01-18 07:32:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:19,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:19,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:19,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:19,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 07:32:19,243 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:19,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2020528988, now seen corresponding path program 38 times [2022-01-18 07:32:19,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:19,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386876149] [2022-01-18 07:32:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:19,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:19,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:19,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:19,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386876149] [2022-01-18 07:32:19,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386876149] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:19,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912438433] [2022-01-18 07:32:19,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:32:19,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:19,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:19,499 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:19,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 07:32:19,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:32:19,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:19,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:32:19,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:19,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:19,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:19,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:19,809 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:19,809 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2022-01-18 07:32:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:19,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:20,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:20,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:20,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:20,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:20,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-01-18 07:32:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:20,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912438433] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:20,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:20,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 28 [2022-01-18 07:32:20,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121859213] [2022-01-18 07:32:20,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:20,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 07:32:20,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 07:32:20,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:32:20,195 INFO L87 Difference]: Start difference. First operand 2753 states and 9927 transitions. Second operand has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:22,656 INFO L93 Difference]: Finished difference Result 4917 states and 16637 transitions. [2022-01-18 07:32:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 07:32:22,656 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:22,665 INFO L225 Difference]: With dead ends: 4917 [2022-01-18 07:32:22,665 INFO L226 Difference]: Without dead ends: 4792 [2022-01-18 07:32:22,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1713 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=892, Invalid=5270, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 07:32:22,666 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 377 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 395 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:22,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 385 Invalid, 1946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1488 Invalid, 0 Unknown, 395 Unchecked, 0.6s Time] [2022-01-18 07:32:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4792 states. [2022-01-18 07:32:22,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4792 to 2837. [2022-01-18 07:32:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2837 states, 2836 states have (on average 3.597672778561354) internal successors, (10203), 2836 states have internal predecessors, (10203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 10203 transitions. [2022-01-18 07:32:22,722 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 10203 transitions. Word has length 26 [2022-01-18 07:32:22,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:22,723 INFO L470 AbstractCegarLoop]: Abstraction has 2837 states and 10203 transitions. [2022-01-18 07:32:22,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 10203 transitions. [2022-01-18 07:32:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:22,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:22,727 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:22,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:22,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:22,932 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:22,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:22,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1206563744, now seen corresponding path program 39 times [2022-01-18 07:32:22,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:22,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104904362] [2022-01-18 07:32:22,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:22,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:23,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:23,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:23,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104904362] [2022-01-18 07:32:23,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104904362] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:23,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191881] [2022-01-18 07:32:23,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:32:23,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:23,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:23,152 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:23,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 07:32:23,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:32:23,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:23,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 07:32:23,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:23,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:23,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:23,516 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:23,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 34 [2022-01-18 07:32:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:23,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:23,989 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:23,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:23,995 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:23,995 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 29 [2022-01-18 07:32:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:24,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191881] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:24,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:24,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 32 [2022-01-18 07:32:24,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547925590] [2022-01-18 07:32:24,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:24,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 07:32:24,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:24,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 07:32:24,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:32:24,110 INFO L87 Difference]: Start difference. First operand 2837 states and 10203 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:26,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:26,414 INFO L93 Difference]: Finished difference Result 4864 states and 16873 transitions. [2022-01-18 07:32:26,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 07:32:26,415 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:26,425 INFO L225 Difference]: With dead ends: 4864 [2022-01-18 07:32:26,425 INFO L226 Difference]: Without dead ends: 4834 [2022-01-18 07:32:26,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1018, Invalid=6292, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 07:32:26,426 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 282 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 788 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:26,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 521 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 898 Invalid, 0 Unknown, 788 Unchecked, 0.4s Time] [2022-01-18 07:32:26,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4834 states. [2022-01-18 07:32:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4834 to 2870. [2022-01-18 07:32:26,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2869 states have (on average 3.590449634018822) internal successors, (10301), 2869 states have internal predecessors, (10301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 10301 transitions. [2022-01-18 07:32:26,483 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 10301 transitions. Word has length 26 [2022-01-18 07:32:26,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:26,483 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 10301 transitions. [2022-01-18 07:32:26,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 32 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:26,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 10301 transitions. [2022-01-18 07:32:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:26,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:26,488 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:26,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2022-01-18 07:32:26,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:26,688 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:26,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:26,688 INFO L85 PathProgramCache]: Analyzing trace with hash 267653912, now seen corresponding path program 40 times [2022-01-18 07:32:26,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:26,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989857653] [2022-01-18 07:32:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:26,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:26,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:26,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989857653] [2022-01-18 07:32:26,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989857653] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:26,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304182309] [2022-01-18 07:32:26,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:32:26,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:26,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:26,898 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:26,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 07:32:26,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:32:26,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:26,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:32:26,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:27,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:27,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:27,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:27,161 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:27,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2022-01-18 07:32:27,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:27,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:27,326 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:32:27,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:32:27,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:27,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304182309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:27,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:27,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 07:32:27,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68456547] [2022-01-18 07:32:27,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:27,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:32:27,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:32:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:32:27,458 INFO L87 Difference]: Start difference. First operand 2870 states and 10301 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:29,682 INFO L93 Difference]: Finished difference Result 4716 states and 15993 transitions. [2022-01-18 07:32:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 07:32:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:29,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:29,691 INFO L225 Difference]: With dead ends: 4716 [2022-01-18 07:32:29,691 INFO L226 Difference]: Without dead ends: 4686 [2022-01-18 07:32:29,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=800, Invalid=5206, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 07:32:29,692 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 243 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:29,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 510 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1899 Invalid, 0 Unknown, 77 Unchecked, 0.7s Time] [2022-01-18 07:32:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2022-01-18 07:32:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 2898. [2022-01-18 07:32:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2897 states have (on average 3.5833620987228167) internal successors, (10381), 2897 states have internal predecessors, (10381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 10381 transitions. [2022-01-18 07:32:29,745 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 10381 transitions. Word has length 26 [2022-01-18 07:32:29,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:29,745 INFO L470 AbstractCegarLoop]: Abstraction has 2898 states and 10381 transitions. [2022-01-18 07:32:29,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 10381 transitions. [2022-01-18 07:32:29,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:29,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:29,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:29,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:29,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:29,950 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:29,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1794939168, now seen corresponding path program 32 times [2022-01-18 07:32:29,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:29,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089490365] [2022-01-18 07:32:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:29,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:30,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089490365] [2022-01-18 07:32:30,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089490365] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415838502] [2022-01-18 07:32:30,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:32:30,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:30,149 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:30,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 07:32:30,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:32:30,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:30,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:32:30,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:30,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:30,393 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:30,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 28 [2022-01-18 07:32:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:30,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:30,640 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:32:30,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:32:30,776 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:30,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:30,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:30,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:32:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:30,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415838502] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:30,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:30,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:32:30,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332665532] [2022-01-18 07:32:30,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:30,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:32:30,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:30,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:32:30,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:32:30,993 INFO L87 Difference]: Start difference. First operand 2898 states and 10381 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:35,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:35,056 INFO L93 Difference]: Finished difference Result 5777 states and 18905 transitions. [2022-01-18 07:32:35,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 07:32:35,056 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:35,067 INFO L225 Difference]: With dead ends: 5777 [2022-01-18 07:32:35,067 INFO L226 Difference]: Without dead ends: 5739 [2022-01-18 07:32:35,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2917 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1257, Invalid=7299, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 07:32:35,068 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 546 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:35,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [546 Valid, 409 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:32:35,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5739 states. [2022-01-18 07:32:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5739 to 2916. [2022-01-18 07:32:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2915 states have (on average 3.585591766723842) internal successors, (10452), 2915 states have internal predecessors, (10452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 10452 transitions. [2022-01-18 07:32:35,132 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 10452 transitions. Word has length 26 [2022-01-18 07:32:35,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:35,132 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 10452 transitions. [2022-01-18 07:32:35,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 10452 transitions. [2022-01-18 07:32:35,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:35,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:35,136 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:35,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:35,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-01-18 07:32:35,337 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:35,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:35,337 INFO L85 PathProgramCache]: Analyzing trace with hash -18564080, now seen corresponding path program 41 times [2022-01-18 07:32:35,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:35,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124798148] [2022-01-18 07:32:35,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:35,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:35,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:35,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124798148] [2022-01-18 07:32:35,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124798148] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:35,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140596187] [2022-01-18 07:32:35,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:32:35,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:35,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:35,553 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:35,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 07:32:35,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:32:35,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:35,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:32:35,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:35,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:35,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:35,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:35,781 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:35,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2022-01-18 07:32:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:35,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:35,929 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:35,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:35,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:35,939 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:35,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:32:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:36,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140596187] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:36,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:36,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2022-01-18 07:32:36,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935665865] [2022-01-18 07:32:36,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:36,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:32:36,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:32:36,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:32:36,032 INFO L87 Difference]: Start difference. First operand 2916 states and 10452 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:38,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:38,940 INFO L93 Difference]: Finished difference Result 5484 states and 18435 transitions. [2022-01-18 07:32:38,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 07:32:38,940 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:38,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:38,951 INFO L225 Difference]: With dead ends: 5484 [2022-01-18 07:32:38,951 INFO L226 Difference]: Without dead ends: 5385 [2022-01-18 07:32:38,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2033 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1130, Invalid=5350, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 07:32:38,951 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 442 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:38,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 511 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1579 Invalid, 0 Unknown, 302 Unchecked, 0.7s Time] [2022-01-18 07:32:38,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5385 states. [2022-01-18 07:32:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5385 to 3032. [2022-01-18 07:32:39,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 3031 states have (on average 3.5819861431870668) internal successors, (10857), 3031 states have internal predecessors, (10857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 10857 transitions. [2022-01-18 07:32:39,016 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 10857 transitions. Word has length 26 [2022-01-18 07:32:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:39,016 INFO L470 AbstractCegarLoop]: Abstraction has 3032 states and 10857 transitions. [2022-01-18 07:32:39,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 10857 transitions. [2022-01-18 07:32:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:39,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:39,021 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:39,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-01-18 07:32:39,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:39,222 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:39,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1815084572, now seen corresponding path program 42 times [2022-01-18 07:32:39,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:39,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017236888] [2022-01-18 07:32:39,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:39,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:39,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:39,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:39,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017236888] [2022-01-18 07:32:39,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017236888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:39,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031493935] [2022-01-18 07:32:39,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:32:39,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:39,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:39,426 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:39,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 07:32:39,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:32:39,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:39,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:32:39,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:39,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:39,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:39,665 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:39,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2022-01-18 07:32:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:39,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:39,906 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:32:39,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:32:40,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:40,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031493935] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:40,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:40,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 26 [2022-01-18 07:32:40,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179863424] [2022-01-18 07:32:40,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:40,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:32:40,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:40,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:32:40,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:32:40,033 INFO L87 Difference]: Start difference. First operand 3032 states and 10857 transitions. Second operand has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 26 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:48,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:48,231 INFO L93 Difference]: Finished difference Result 7691 states and 25281 transitions. [2022-01-18 07:32:48,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-18 07:32:48,231 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 26 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:48,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:48,245 INFO L225 Difference]: With dead ends: 7691 [2022-01-18 07:32:48,245 INFO L226 Difference]: Without dead ends: 7579 [2022-01-18 07:32:48,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 11219 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4357, Invalid=23365, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 07:32:48,247 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 637 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:48,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 720 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 07:32:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7579 states. [2022-01-18 07:32:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7579 to 3071. [2022-01-18 07:32:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3071 states, 3070 states have (on average 3.585342019543974) internal successors, (11007), 3070 states have internal predecessors, (11007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3071 states to 3071 states and 11007 transitions. [2022-01-18 07:32:48,326 INFO L78 Accepts]: Start accepts. Automaton has 3071 states and 11007 transitions. Word has length 26 [2022-01-18 07:32:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:48,326 INFO L470 AbstractCegarLoop]: Abstraction has 3071 states and 11007 transitions. [2022-01-18 07:32:48,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 26 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3071 states and 11007 transitions. [2022-01-18 07:32:48,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:48,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:48,331 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:48,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 07:32:48,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:48,531 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash -629380028, now seen corresponding path program 33 times [2022-01-18 07:32:48,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:48,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649837099] [2022-01-18 07:32:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:48,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:48,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:48,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:48,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649837099] [2022-01-18 07:32:48,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649837099] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:48,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986463188] [2022-01-18 07:32:48,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:32:48,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:48,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:48,703 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:48,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:32:48,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:48,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:32:48,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:48,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 07:32:49,049 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:49,050 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 38 [2022-01-18 07:32:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:49,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:49,635 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:49,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:32:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:50,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986463188] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:50,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:50,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2022-01-18 07:32:50,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605230491] [2022-01-18 07:32:50,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:50,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:32:50,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:50,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:32:50,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:32:50,205 INFO L87 Difference]: Start difference. First operand 3071 states and 11007 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:52,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:52,493 INFO L93 Difference]: Finished difference Result 5427 states and 18637 transitions. [2022-01-18 07:32:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 07:32:52,493 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:52,503 INFO L225 Difference]: With dead ends: 5427 [2022-01-18 07:32:52,504 INFO L226 Difference]: Without dead ends: 5383 [2022-01-18 07:32:52,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1406 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=843, Invalid=3987, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 07:32:52,504 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 256 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 910 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:52,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 440 Invalid, 1983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1012 Invalid, 0 Unknown, 910 Unchecked, 0.5s Time] [2022-01-18 07:32:52,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5383 states. [2022-01-18 07:32:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5383 to 3067. [2022-01-18 07:32:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 3066 states have (on average 3.5848010437051534) internal successors, (10991), 3066 states have internal predecessors, (10991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 10991 transitions. [2022-01-18 07:32:52,568 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 10991 transitions. Word has length 26 [2022-01-18 07:32:52,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:52,568 INFO L470 AbstractCegarLoop]: Abstraction has 3067 states and 10991 transitions. [2022-01-18 07:32:52,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 10991 transitions. [2022-01-18 07:32:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:52,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:52,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:52,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:52,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-01-18 07:32:52,773 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2048054488, now seen corresponding path program 34 times [2022-01-18 07:32:52,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:52,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60163945] [2022-01-18 07:32:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:52,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:52,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:52,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:52,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60163945] [2022-01-18 07:32:52,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60163945] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:52,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860197120] [2022-01-18 07:32:52,935 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:32:52,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:52,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:52,936 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:52,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 07:32:52,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:32:52,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:52,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:32:52,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:53,182 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:53,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2022-01-18 07:32:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:53,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:53,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:53,404 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:53,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:32:53,507 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:53,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:32:53,521 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:53,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:32:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:53,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860197120] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:53,711 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:53,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:32:53,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726164921] [2022-01-18 07:32:53,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:53,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:32:53,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:32:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:32:53,712 INFO L87 Difference]: Start difference. First operand 3067 states and 10991 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:56,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:32:56,167 INFO L93 Difference]: Finished difference Result 6031 states and 19876 transitions. [2022-01-18 07:32:56,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 07:32:56,167 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:32:56,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:32:56,179 INFO L225 Difference]: With dead ends: 6031 [2022-01-18 07:32:56,179 INFO L226 Difference]: Without dead ends: 5977 [2022-01-18 07:32:56,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1940 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1154, Invalid=4396, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 07:32:56,180 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 559 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:32:56,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 403 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1182 Invalid, 0 Unknown, 280 Unchecked, 0.6s Time] [2022-01-18 07:32:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5977 states. [2022-01-18 07:32:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5977 to 3113. [2022-01-18 07:32:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 3112 states have (on average 3.581298200514139) internal successors, (11145), 3112 states have internal predecessors, (11145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 11145 transitions. [2022-01-18 07:32:56,242 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 11145 transitions. Word has length 26 [2022-01-18 07:32:56,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:32:56,242 INFO L470 AbstractCegarLoop]: Abstraction has 3113 states and 11145 transitions. [2022-01-18 07:32:56,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:32:56,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 11145 transitions. [2022-01-18 07:32:56,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:32:56,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:32:56,246 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:32:56,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-01-18 07:32:56,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-18 07:32:56,447 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:32:56,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:32:56,447 INFO L85 PathProgramCache]: Analyzing trace with hash 358111584, now seen corresponding path program 35 times [2022-01-18 07:32:56,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:32:56,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762863322] [2022-01-18 07:32:56,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:32:56,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:32:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:32:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:56,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:32:56,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762863322] [2022-01-18 07:32:56,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762863322] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:32:56,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991283844] [2022-01-18 07:32:56,594 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:32:56,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:32:56,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:32:56,594 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:32:56,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 07:32:56,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:32:56,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:32:56,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:32:56,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:32:56,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:32:56,856 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:56,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 28 [2022-01-18 07:32:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:56,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:32:57,130 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:32:57,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:32:57,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:32:57,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991283844] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:32:57,838 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:32:57,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-01-18 07:32:57,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283414090] [2022-01-18 07:32:57,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:32:57,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:32:57,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:32:57,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:32:57,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:32:57,839 INFO L87 Difference]: Start difference. First operand 3113 states and 11145 transitions. Second operand has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:00,575 INFO L93 Difference]: Finished difference Result 5565 states and 18570 transitions. [2022-01-18 07:33:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 07:33:00,575 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:00,586 INFO L225 Difference]: With dead ends: 5565 [2022-01-18 07:33:00,586 INFO L226 Difference]: Without dead ends: 5515 [2022-01-18 07:33:00,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1111, Invalid=4439, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 07:33:00,587 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 445 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:00,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 345 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 911 Invalid, 0 Unknown, 213 Unchecked, 0.5s Time] [2022-01-18 07:33:00,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5515 states. [2022-01-18 07:33:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5515 to 3125. [2022-01-18 07:33:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 3124 states have (on average 3.5848271446862996) internal successors, (11199), 3124 states have internal predecessors, (11199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 11199 transitions. [2022-01-18 07:33:00,652 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 11199 transitions. Word has length 26 [2022-01-18 07:33:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:00,652 INFO L470 AbstractCegarLoop]: Abstraction has 3125 states and 11199 transitions. [2022-01-18 07:33:00,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 11199 transitions. [2022-01-18 07:33:00,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:00,657 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:00,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:00,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 07:33:00,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:00,857 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:00,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1865146436, now seen corresponding path program 36 times [2022-01-18 07:33:00,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:00,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315764940] [2022-01-18 07:33:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:00,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:01,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:01,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:01,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315764940] [2022-01-18 07:33:01,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315764940] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:01,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626628738] [2022-01-18 07:33:01,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:33:01,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:01,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:01,023 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:01,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 07:33:01,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:33:01,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:01,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:33:01,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:01,317 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-18 07:33:01,317 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 60 [2022-01-18 07:33:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:01,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:01,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:01,578 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:01,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:33:01,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:01,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:01,730 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:01,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:33:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:01,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626628738] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:01,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:01,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2022-01-18 07:33:01,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401739586] [2022-01-18 07:33:01,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:01,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:33:01,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:01,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:33:01,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:33:01,939 INFO L87 Difference]: Start difference. First operand 3125 states and 11199 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:03,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:03,471 INFO L93 Difference]: Finished difference Result 5173 states and 17270 transitions. [2022-01-18 07:33:03,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 07:33:03,472 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:03,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:03,481 INFO L225 Difference]: With dead ends: 5173 [2022-01-18 07:33:03,482 INFO L226 Difference]: Without dead ends: 5158 [2022-01-18 07:33:03,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=585, Invalid=2837, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 07:33:03,482 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 301 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 357 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:03,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 358 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 852 Invalid, 0 Unknown, 357 Unchecked, 0.4s Time] [2022-01-18 07:33:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5158 states. [2022-01-18 07:33:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5158 to 3154. [2022-01-18 07:33:03,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3154 states, 3153 states have (on average 3.587059942911513) internal successors, (11310), 3153 states have internal predecessors, (11310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 11310 transitions. [2022-01-18 07:33:03,542 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 11310 transitions. Word has length 26 [2022-01-18 07:33:03,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:03,543 INFO L470 AbstractCegarLoop]: Abstraction has 3154 states and 11310 transitions. [2022-01-18 07:33:03,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:03,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 11310 transitions. [2022-01-18 07:33:03,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:03,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:03,548 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:03,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-01-18 07:33:03,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:03,748 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:03,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:03,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2033699288, now seen corresponding path program 43 times [2022-01-18 07:33:03,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:03,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042711085] [2022-01-18 07:33:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:03,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:04,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042711085] [2022-01-18 07:33:04,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042711085] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505273034] [2022-01-18 07:33:04,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:33:04,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:04,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:04,015 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:04,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 07:33:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:04,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:33:04,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:04,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:04,314 INFO L353 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2022-01-18 07:33:04,314 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 113 treesize of output 99 [2022-01-18 07:33:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:04,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:04,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:04,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:04,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:04,638 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:04,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:33:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:04,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505273034] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:04,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:04,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-01-18 07:33:04,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917072850] [2022-01-18 07:33:04,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:04,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-18 07:33:04,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:04,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-18 07:33:04,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2022-01-18 07:33:04,759 INFO L87 Difference]: Start difference. First operand 3154 states and 11310 transitions. Second operand has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:07,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:07,433 INFO L93 Difference]: Finished difference Result 4979 states and 16970 transitions. [2022-01-18 07:33:07,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 07:33:07,433 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:07,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:07,442 INFO L225 Difference]: With dead ends: 4979 [2022-01-18 07:33:07,442 INFO L226 Difference]: Without dead ends: 4899 [2022-01-18 07:33:07,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1153, Invalid=6679, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 07:33:07,443 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 291 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:07,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 453 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1699 Invalid, 0 Unknown, 222 Unchecked, 0.7s Time] [2022-01-18 07:33:07,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4899 states. [2022-01-18 07:33:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4899 to 3160. [2022-01-18 07:33:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3160 states, 3159 states have (on average 3.5875276986388096) internal successors, (11333), 3159 states have internal predecessors, (11333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 11333 transitions. [2022-01-18 07:33:07,493 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 11333 transitions. Word has length 26 [2022-01-18 07:33:07,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:07,494 INFO L470 AbstractCegarLoop]: Abstraction has 3160 states and 11333 transitions. [2022-01-18 07:33:07,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.310344827586207) internal successors, (67), 29 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 11333 transitions. [2022-01-18 07:33:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:07,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:07,498 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:07,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-18 07:33:07,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:07,711 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:07,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1457232352, now seen corresponding path program 44 times [2022-01-18 07:33:07,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:07,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494793252] [2022-01-18 07:33:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:07,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:07,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:07,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494793252] [2022-01-18 07:33:07,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494793252] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:07,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745736925] [2022-01-18 07:33:07,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:33:07,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:07,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:07,934 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:07,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 07:33:07,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:33:07,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:07,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 07:33:07,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:08,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:08,235 INFO L353 Elim1Store]: treesize reduction 18, result has 63.3 percent of original size [2022-01-18 07:33:08,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 126 treesize of output 102 [2022-01-18 07:33:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:08,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:08,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:08,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:08,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:08,612 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:08,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:33:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:08,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745736925] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:08,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:08,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 31 [2022-01-18 07:33:08,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990945861] [2022-01-18 07:33:08,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:08,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 07:33:08,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 07:33:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:33:08,718 INFO L87 Difference]: Start difference. First operand 3160 states and 11333 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:18,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:18,376 INFO L93 Difference]: Finished difference Result 8144 states and 26589 transitions. [2022-01-18 07:33:18,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-18 07:33:18,376 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:18,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:18,391 INFO L225 Difference]: With dead ends: 8144 [2022-01-18 07:33:18,391 INFO L226 Difference]: Without dead ends: 8004 [2022-01-18 07:33:18,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 12393 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5769, Invalid=23987, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 07:33:18,393 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 824 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:18,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 728 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 07:33:18,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8004 states. [2022-01-18 07:33:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8004 to 3258. [2022-01-18 07:33:18,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3258 states, 3257 states have (on average 3.604237027939822) internal successors, (11739), 3257 states have internal predecessors, (11739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3258 states to 3258 states and 11739 transitions. [2022-01-18 07:33:18,483 INFO L78 Accepts]: Start accepts. Automaton has 3258 states and 11739 transitions. Word has length 26 [2022-01-18 07:33:18,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:18,483 INFO L470 AbstractCegarLoop]: Abstraction has 3258 states and 11739 transitions. [2022-01-18 07:33:18,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:18,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3258 states and 11739 transitions. [2022-01-18 07:33:18,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:18,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:18,490 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:18,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 07:33:18,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:18,690 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:18,691 INFO L85 PathProgramCache]: Analyzing trace with hash -796349720, now seen corresponding path program 37 times [2022-01-18 07:33:18,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:18,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178087779] [2022-01-18 07:33:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:18,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:18,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:18,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178087779] [2022-01-18 07:33:18,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178087779] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:18,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573948274] [2022-01-18 07:33:18,850 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:33:18,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:18,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:18,851 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:18,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 07:33:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:18,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:33:18,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:19,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:19,079 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:19,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 29 [2022-01-18 07:33:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:19,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:19,335 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:33:19,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:33:19,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:19,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:19,475 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:19,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:33:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:19,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573948274] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:19,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:19,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:33:19,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141426867] [2022-01-18 07:33:19,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:19,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:33:19,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:19,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:33:19,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:33:19,661 INFO L87 Difference]: Start difference. First operand 3258 states and 11739 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:21,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:21,990 INFO L93 Difference]: Finished difference Result 5863 states and 19657 transitions. [2022-01-18 07:33:21,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:33:21,990 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:21,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:22,001 INFO L225 Difference]: With dead ends: 5863 [2022-01-18 07:33:22,002 INFO L226 Difference]: Without dead ends: 5787 [2022-01-18 07:33:22,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=851, Invalid=4849, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 07:33:22,002 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 407 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:22,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 326 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:33:22,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2022-01-18 07:33:22,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 3266. [2022-01-18 07:33:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3265 states have (on average 3.6042879019908116) internal successors, (11768), 3265 states have internal predecessors, (11768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:22,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 11768 transitions. [2022-01-18 07:33:22,073 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 11768 transitions. Word has length 26 [2022-01-18 07:33:22,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:22,074 INFO L470 AbstractCegarLoop]: Abstraction has 3266 states and 11768 transitions. [2022-01-18 07:33:22,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:22,074 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 11768 transitions. [2022-01-18 07:33:22,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:22,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:22,079 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:22,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-18 07:33:22,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:22,280 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:22,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1263964854, now seen corresponding path program 38 times [2022-01-18 07:33:22,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:22,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172572771] [2022-01-18 07:33:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:22,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:22,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:22,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172572771] [2022-01-18 07:33:22,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172572771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:22,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520724550] [2022-01-18 07:33:22,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:33:22,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:22,449 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:22,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 07:33:22,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:33:22,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:22,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:33:22,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:22,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:22,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:22,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 41 [2022-01-18 07:33:22,864 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:22,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:23,021 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:23,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:33:23,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:23,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520724550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:23,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:23,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:33:23,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949424519] [2022-01-18 07:33:23,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:23,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:33:23,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:33:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:33:23,740 INFO L87 Difference]: Start difference. First operand 3266 states and 11768 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:26,704 INFO L93 Difference]: Finished difference Result 5890 states and 19730 transitions. [2022-01-18 07:33:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 07:33:26,705 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:26,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:26,716 INFO L225 Difference]: With dead ends: 5890 [2022-01-18 07:33:26,716 INFO L226 Difference]: Without dead ends: 5875 [2022-01-18 07:33:26,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 35 SyntacticMatches, 15 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2184 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1146, Invalid=4404, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 07:33:26,717 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 448 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:26,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 341 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1011 Invalid, 0 Unknown, 188 Unchecked, 0.5s Time] [2022-01-18 07:33:26,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5875 states. [2022-01-18 07:33:26,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5875 to 3263. [2022-01-18 07:33:26,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3263 states, 3262 states have (on average 3.604843654199877) internal successors, (11759), 3262 states have internal predecessors, (11759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 11759 transitions. [2022-01-18 07:33:26,787 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 11759 transitions. Word has length 26 [2022-01-18 07:33:26,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:26,788 INFO L470 AbstractCegarLoop]: Abstraction has 3263 states and 11759 transitions. [2022-01-18 07:33:26,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:26,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 11759 transitions. [2022-01-18 07:33:26,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:26,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:26,793 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:26,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-18 07:33:26,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-01-18 07:33:26,994 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:26,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -442415060, now seen corresponding path program 45 times [2022-01-18 07:33:26,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:26,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530533088] [2022-01-18 07:33:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:26,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:27,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:27,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530533088] [2022-01-18 07:33:27,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530533088] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945087142] [2022-01-18 07:33:27,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:33:27,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:27,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:27,204 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:27,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 07:33:27,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:33:27,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:27,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:33:27,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:27,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:27,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:27,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:27,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:27,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-01-18 07:33:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:27,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:27,628 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:33:27,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:33:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:27,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945087142] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:27,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:27,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 24 [2022-01-18 07:33:27,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25979286] [2022-01-18 07:33:27,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:27,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:33:27,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:33:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:33:27,964 INFO L87 Difference]: Start difference. First operand 3263 states and 11759 transitions. Second operand has 25 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:29,052 INFO L93 Difference]: Finished difference Result 4518 states and 15769 transitions. [2022-01-18 07:33:29,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:33:29,052 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:29,061 INFO L225 Difference]: With dead ends: 4518 [2022-01-18 07:33:29,061 INFO L226 Difference]: Without dead ends: 4438 [2022-01-18 07:33:29,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=427, Invalid=2123, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 07:33:29,062 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 222 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 227 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:29,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 267 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 889 Invalid, 0 Unknown, 227 Unchecked, 0.4s Time] [2022-01-18 07:33:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2022-01-18 07:33:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3243. [2022-01-18 07:33:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3242 states have (on average 3.6085749537322642) internal successors, (11699), 3242 states have internal predecessors, (11699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:29,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 11699 transitions. [2022-01-18 07:33:29,118 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 11699 transitions. Word has length 26 [2022-01-18 07:33:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:29,119 INFO L470 AbstractCegarLoop]: Abstraction has 3243 states and 11699 transitions. [2022-01-18 07:33:29,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.6) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:29,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 11699 transitions. [2022-01-18 07:33:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:29,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:29,124 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:29,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-01-18 07:33:29,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:29,325 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:29,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:29,325 INFO L85 PathProgramCache]: Analyzing trace with hash -201202114, now seen corresponding path program 46 times [2022-01-18 07:33:29,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:29,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239547126] [2022-01-18 07:33:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:29,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:29,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:29,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239547126] [2022-01-18 07:33:29,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239547126] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:29,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039463710] [2022-01-18 07:33:29,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:33:29,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:29,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:29,566 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:29,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 07:33:29,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:33:29,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:29,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:33:29,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:29,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:29,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:29,771 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:29,771 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 44 [2022-01-18 07:33:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:29,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:30,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:30,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:30,047 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:30,056 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:30,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:33:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:30,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039463710] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:30,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:30,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2022-01-18 07:33:30,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895397453] [2022-01-18 07:33:30,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:30,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:33:30,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:33:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:33:30,165 INFO L87 Difference]: Start difference. First operand 3243 states and 11699 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:32,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:32,305 INFO L93 Difference]: Finished difference Result 6253 states and 21260 transitions. [2022-01-18 07:33:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 07:33:32,305 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:32,318 INFO L225 Difference]: With dead ends: 6253 [2022-01-18 07:33:32,318 INFO L226 Difference]: Without dead ends: 6161 [2022-01-18 07:33:32,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1831 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1002, Invalid=4698, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 07:33:32,319 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 386 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:32,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 455 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1400 Invalid, 0 Unknown, 321 Unchecked, 0.6s Time] [2022-01-18 07:33:32,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6161 states. [2022-01-18 07:33:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6161 to 3349. [2022-01-18 07:33:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3348 states have (on average 3.607228195937873) internal successors, (12077), 3348 states have internal predecessors, (12077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:32,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 12077 transitions. [2022-01-18 07:33:32,402 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 12077 transitions. Word has length 26 [2022-01-18 07:33:32,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:32,402 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 12077 transitions. [2022-01-18 07:33:32,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 12077 transitions. [2022-01-18 07:33:32,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:32,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:32,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:32,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 07:33:32,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:32,608 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1867510744, now seen corresponding path program 39 times [2022-01-18 07:33:32,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:32,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118398050] [2022-01-18 07:33:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:32,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:32,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:32,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118398050] [2022-01-18 07:33:32,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118398050] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:32,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838133380] [2022-01-18 07:33:32,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:33:32,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:32,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:32,759 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:32,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 07:33:32,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:33:32,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:32,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:33:32,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:33,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:33,012 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:33,013 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 38 [2022-01-18 07:33:33,144 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:33,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:33,319 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:33,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:33:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:34,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838133380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:34,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:34,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-01-18 07:33:34,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420739405] [2022-01-18 07:33:34,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:34,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:33:34,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:34,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:33:34,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:33:34,229 INFO L87 Difference]: Start difference. First operand 3349 states and 12077 transitions. Second operand has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:36,841 INFO L93 Difference]: Finished difference Result 6399 states and 21260 transitions. [2022-01-18 07:33:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 07:33:36,841 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:36,854 INFO L225 Difference]: With dead ends: 6399 [2022-01-18 07:33:36,855 INFO L226 Difference]: Without dead ends: 6334 [2022-01-18 07:33:36,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1079, Invalid=4323, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 07:33:36,855 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 377 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:36,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 370 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1216 Invalid, 0 Unknown, 313 Unchecked, 0.6s Time] [2022-01-18 07:33:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6334 states. [2022-01-18 07:33:36,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6334 to 3288. [2022-01-18 07:33:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3287 states have (on average 3.606327958624886) internal successors, (11854), 3287 states have internal predecessors, (11854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:36,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 11854 transitions. [2022-01-18 07:33:36,943 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 11854 transitions. Word has length 26 [2022-01-18 07:33:36,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:36,943 INFO L470 AbstractCegarLoop]: Abstraction has 3288 states and 11854 transitions. [2022-01-18 07:33:36,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.217391304347826) internal successors, (51), 23 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:36,943 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 11854 transitions. [2022-01-18 07:33:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:36,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:36,948 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:36,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-01-18 07:33:37,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:37,149 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:37,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:37,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2048965000, now seen corresponding path program 40 times [2022-01-18 07:33:37,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:37,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302684648] [2022-01-18 07:33:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:37,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:37,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:37,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302684648] [2022-01-18 07:33:37,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302684648] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:37,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421966633] [2022-01-18 07:33:37,279 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:33:37,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:37,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:37,279 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:37,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 07:33:37,299 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:33:37,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:37,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:33:37,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:37,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:37,537 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:37,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2022-01-18 07:33:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:37,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:37,751 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:33:37,751 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:33:37,883 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:37,885 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:37,896 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:37,896 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:33:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:38,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421966633] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:38,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:38,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:33:38,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376763368] [2022-01-18 07:33:38,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:38,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:33:38,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:38,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:33:38,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:33:38,134 INFO L87 Difference]: Start difference. First operand 3288 states and 11854 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:40,409 INFO L93 Difference]: Finished difference Result 5718 states and 19427 transitions. [2022-01-18 07:33:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 07:33:40,409 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:40,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:40,420 INFO L225 Difference]: With dead ends: 5718 [2022-01-18 07:33:40,420 INFO L226 Difference]: Without dead ends: 5688 [2022-01-18 07:33:40,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=684, Invalid=4428, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 07:33:40,421 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 237 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:40,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 503 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:33:40,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5688 states. [2022-01-18 07:33:40,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5688 to 3282. [2022-01-18 07:33:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 3281 states have (on average 3.602255409935995) internal successors, (11819), 3281 states have internal predecessors, (11819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 11819 transitions. [2022-01-18 07:33:40,492 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 11819 transitions. Word has length 26 [2022-01-18 07:33:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:40,492 INFO L470 AbstractCegarLoop]: Abstraction has 3282 states and 11819 transitions. [2022-01-18 07:33:40,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 11819 transitions. [2022-01-18 07:33:40,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:40,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:40,497 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:40,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-01-18 07:33:40,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:40,698 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash 581625440, now seen corresponding path program 41 times [2022-01-18 07:33:40,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:40,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858160911] [2022-01-18 07:33:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:40,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:40,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:40,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858160911] [2022-01-18 07:33:40,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858160911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:40,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473453571] [2022-01-18 07:33:40,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:33:40,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:40,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:40,839 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:40,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 07:33:40,860 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:33:40,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:40,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:33:40,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:41,079 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-18 07:33:41,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 63 [2022-01-18 07:33:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:41,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:41,325 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:33:41,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:33:41,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:41,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:41,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:41,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:33:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:41,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473453571] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:41,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:41,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:33:41,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160019674] [2022-01-18 07:33:41,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:41,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:33:41,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:33:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:33:41,680 INFO L87 Difference]: Start difference. First operand 3282 states and 11819 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:44,483 INFO L93 Difference]: Finished difference Result 6585 states and 21868 transitions. [2022-01-18 07:33:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-18 07:33:44,484 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:44,496 INFO L225 Difference]: With dead ends: 6585 [2022-01-18 07:33:44,496 INFO L226 Difference]: Without dead ends: 6485 [2022-01-18 07:33:44,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1579 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=941, Invalid=4461, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 07:33:44,496 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 312 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:44,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 421 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:33:44,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6485 states. [2022-01-18 07:33:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6485 to 3306. [2022-01-18 07:33:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3306 states, 3305 states have (on average 3.5972768532526476) internal successors, (11889), 3305 states have internal predecessors, (11889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 11889 transitions. [2022-01-18 07:33:44,565 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 11889 transitions. Word has length 26 [2022-01-18 07:33:44,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:44,566 INFO L470 AbstractCegarLoop]: Abstraction has 3306 states and 11889 transitions. [2022-01-18 07:33:44,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:44,566 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 11889 transitions. [2022-01-18 07:33:44,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:44,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:44,571 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:44,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 07:33:44,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:44,771 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash 919972282, now seen corresponding path program 42 times [2022-01-18 07:33:44,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:44,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122812127] [2022-01-18 07:33:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:44,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:44,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:44,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122812127] [2022-01-18 07:33:44,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122812127] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:44,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576228287] [2022-01-18 07:33:44,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:33:44,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:44,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:44,904 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:44,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 07:33:44,923 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:33:44,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:44,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:33:44,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:45,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:45,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:45,231 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:45,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2022-01-18 07:33:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:45,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:45,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:45,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:45,506 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:45,506 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 55 [2022-01-18 07:33:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:45,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576228287] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:45,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:45,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 07:33:45,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088053783] [2022-01-18 07:33:45,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:45,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:33:45,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:33:45,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:33:45,716 INFO L87 Difference]: Start difference. First operand 3306 states and 11889 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:49,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:49,199 INFO L93 Difference]: Finished difference Result 6572 states and 22169 transitions. [2022-01-18 07:33:49,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 07:33:49,199 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:49,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:49,213 INFO L225 Difference]: With dead ends: 6572 [2022-01-18 07:33:49,213 INFO L226 Difference]: Without dead ends: 6527 [2022-01-18 07:33:49,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3470 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1542, Invalid=8964, Unknown=0, NotChecked=0, Total=10506 [2022-01-18 07:33:49,214 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 476 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 920 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:49,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 630 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1212 Invalid, 0 Unknown, 920 Unchecked, 0.6s Time] [2022-01-18 07:33:49,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6527 states. [2022-01-18 07:33:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6527 to 3341. [2022-01-18 07:33:49,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3341 states, 3340 states have (on average 3.6035928143712574) internal successors, (12036), 3340 states have internal predecessors, (12036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3341 states to 3341 states and 12036 transitions. [2022-01-18 07:33:49,295 INFO L78 Accepts]: Start accepts. Automaton has 3341 states and 12036 transitions. Word has length 26 [2022-01-18 07:33:49,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:49,295 INFO L470 AbstractCegarLoop]: Abstraction has 3341 states and 12036 transitions. [2022-01-18 07:33:49,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:49,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3341 states and 12036 transitions. [2022-01-18 07:33:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:49,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:49,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:49,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-01-18 07:33:49,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-01-18 07:33:49,501 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:49,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 796347224, now seen corresponding path program 43 times [2022-01-18 07:33:49,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:49,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561820029] [2022-01-18 07:33:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:49,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:49,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:49,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561820029] [2022-01-18 07:33:49,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561820029] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:49,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045281445] [2022-01-18 07:33:49,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:33:49,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:49,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:49,635 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:49,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 07:33:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:49,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:33:49,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:49,866 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-18 07:33:49,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 64 [2022-01-18 07:33:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:49,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:50,098 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:33:50,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:33:50,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:50,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:50,245 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:50,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:33:50,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:50,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045281445] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:50,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:50,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:33:50,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964861199] [2022-01-18 07:33:50,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:50,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:33:50,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:50,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:33:50,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:33:50,462 INFO L87 Difference]: Start difference. First operand 3341 states and 12036 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:52,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:52,563 INFO L93 Difference]: Finished difference Result 5825 states and 19778 transitions. [2022-01-18 07:33:52,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 07:33:52,564 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:52,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:52,575 INFO L225 Difference]: With dead ends: 5825 [2022-01-18 07:33:52,575 INFO L226 Difference]: Without dead ends: 5787 [2022-01-18 07:33:52,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1436 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=759, Invalid=4071, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 07:33:52,576 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 298 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:52,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 449 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:33:52,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2022-01-18 07:33:52,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 3342. [2022-01-18 07:33:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3342 states, 3341 states have (on average 3.6025142173002096) internal successors, (12036), 3341 states have internal predecessors, (12036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3342 states to 3342 states and 12036 transitions. [2022-01-18 07:33:52,641 INFO L78 Accepts]: Start accepts. Automaton has 3342 states and 12036 transitions. Word has length 26 [2022-01-18 07:33:52,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:52,641 INFO L470 AbstractCegarLoop]: Abstraction has 3342 states and 12036 transitions. [2022-01-18 07:33:52,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3342 states and 12036 transitions. [2022-01-18 07:33:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:52,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:52,647 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:52,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 07:33:52,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:52,847 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:52,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:52,847 INFO L85 PathProgramCache]: Analyzing trace with hash -326643600, now seen corresponding path program 44 times [2022-01-18 07:33:52,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:52,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239479461] [2022-01-18 07:33:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:52,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:52,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:52,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239479461] [2022-01-18 07:33:52,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239479461] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:52,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582028897] [2022-01-18 07:33:52,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:33:52,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:52,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:52,987 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:52,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 07:33:53,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:33:53,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:53,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:33:53,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:53,219 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-18 07:33:53,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 63 [2022-01-18 07:33:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:53,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:53,457 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:33:53,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:33:53,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:53,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:53,596 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:53,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:33:53,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:53,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582028897] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:53,840 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:53,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:33:53,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112849475] [2022-01-18 07:33:53,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:53,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:33:53,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:53,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:33:53,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:33:53,841 INFO L87 Difference]: Start difference. First operand 3342 states and 12036 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:55,438 INFO L93 Difference]: Finished difference Result 5761 states and 19513 transitions. [2022-01-18 07:33:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 07:33:55,438 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:55,450 INFO L225 Difference]: With dead ends: 5761 [2022-01-18 07:33:55,450 INFO L226 Difference]: Without dead ends: 5681 [2022-01-18 07:33:55,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=641, Invalid=3265, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 07:33:55,454 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 310 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:55,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 301 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:33:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5681 states. [2022-01-18 07:33:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5681 to 3325. [2022-01-18 07:33:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 3.6028880866425994) internal successors, (11976), 3324 states have internal predecessors, (11976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 11976 transitions. [2022-01-18 07:33:55,526 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 11976 transitions. Word has length 26 [2022-01-18 07:33:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:55,526 INFO L470 AbstractCegarLoop]: Abstraction has 3325 states and 11976 transitions. [2022-01-18 07:33:55,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 11976 transitions. [2022-01-18 07:33:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:55,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:55,531 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:55,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 07:33:55,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:55,732 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1944965776, now seen corresponding path program 45 times [2022-01-18 07:33:55,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:55,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036828136] [2022-01-18 07:33:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:55,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:55,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:55,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:55,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036828136] [2022-01-18 07:33:55,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036828136] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:55,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027499933] [2022-01-18 07:33:55,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:33:55,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:55,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:55,866 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:55,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 07:33:55,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:33:55,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:55,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:33:55,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:56,235 INFO L353 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-01-18 07:33:56,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 50 [2022-01-18 07:33:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:56,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:56,403 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:56,403 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:33:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:57,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027499933] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:33:57,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:33:57,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2022-01-18 07:33:57,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673741469] [2022-01-18 07:33:57,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:33:57,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:33:57,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:33:57,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:33:57,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:33:57,208 INFO L87 Difference]: Start difference. First operand 3325 states and 11976 transitions. Second operand has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:58,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:33:58,726 INFO L93 Difference]: Finished difference Result 5329 states and 17858 transitions. [2022-01-18 07:33:58,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 07:33:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:33:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:33:58,736 INFO L225 Difference]: With dead ends: 5329 [2022-01-18 07:33:58,736 INFO L226 Difference]: Without dead ends: 5240 [2022-01-18 07:33:58,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=434, Invalid=2428, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 07:33:58,737 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 229 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:33:58,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 421 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1213 Invalid, 0 Unknown, 153 Unchecked, 0.5s Time] [2022-01-18 07:33:58,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5240 states. [2022-01-18 07:33:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5240 to 3399. [2022-01-18 07:33:58,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3399 states, 3398 states have (on average 3.5991759858740435) internal successors, (12230), 3398 states have internal predecessors, (12230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3399 states to 3399 states and 12230 transitions. [2022-01-18 07:33:58,798 INFO L78 Accepts]: Start accepts. Automaton has 3399 states and 12230 transitions. Word has length 26 [2022-01-18 07:33:58,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:33:58,798 INFO L470 AbstractCegarLoop]: Abstraction has 3399 states and 12230 transitions. [2022-01-18 07:33:58,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5384615384615383) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:33:58,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3399 states and 12230 transitions. [2022-01-18 07:33:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:33:58,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:33:58,804 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:33:58,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-01-18 07:33:59,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:59,004 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:33:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:33:59,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1836189860, now seen corresponding path program 46 times [2022-01-18 07:33:59,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:33:59,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857682937] [2022-01-18 07:33:59,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:33:59,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:33:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:33:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:59,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:33:59,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857682937] [2022-01-18 07:33:59,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857682937] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:33:59,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052938499] [2022-01-18 07:33:59,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:33:59,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:33:59,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:33:59,132 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:33:59,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 07:33:59,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:33:59,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:33:59,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:33:59,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:33:59,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:33:59,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:33:59,466 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2022-01-18 07:33:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:33:59,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:33:59,638 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:33:59,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:34:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:00,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052938499] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:00,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:00,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2022-01-18 07:34:00,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281861056] [2022-01-18 07:34:00,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:00,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:34:00,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:00,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:34:00,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:34:00,451 INFO L87 Difference]: Start difference. First operand 3399 states and 12230 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:01,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:01,899 INFO L93 Difference]: Finished difference Result 5187 states and 17669 transitions. [2022-01-18 07:34:01,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:34:01,899 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:01,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:01,909 INFO L225 Difference]: With dead ends: 5187 [2022-01-18 07:34:01,909 INFO L226 Difference]: Without dead ends: 5157 [2022-01-18 07:34:01,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=479, Invalid=2071, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 07:34:01,910 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 241 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 365 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:01,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 225 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 711 Invalid, 0 Unknown, 365 Unchecked, 0.3s Time] [2022-01-18 07:34:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2022-01-18 07:34:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 3468. [2022-01-18 07:34:01,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3468 states, 3467 states have (on average 3.5950389385635995) internal successors, (12464), 3467 states have internal predecessors, (12464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:01,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3468 states to 3468 states and 12464 transitions. [2022-01-18 07:34:01,975 INFO L78 Accepts]: Start accepts. Automaton has 3468 states and 12464 transitions. Word has length 26 [2022-01-18 07:34:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:01,975 INFO L470 AbstractCegarLoop]: Abstraction has 3468 states and 12464 transitions. [2022-01-18 07:34:01,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 3468 states and 12464 transitions. [2022-01-18 07:34:01,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:01,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:01,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:01,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 07:34:02,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:02,181 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:02,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:02,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2003998952, now seen corresponding path program 47 times [2022-01-18 07:34:02,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:02,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877714636] [2022-01-18 07:34:02,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:02,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:02,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:02,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877714636] [2022-01-18 07:34:02,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877714636] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:02,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617909764] [2022-01-18 07:34:02,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:34:02,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:02,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:02,319 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:02,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 07:34:02,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:34:02,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:02,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:34:02,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:02,602 INFO L353 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-01-18 07:34:02,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 55 [2022-01-18 07:34:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:02,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:02,781 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:34:02,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:34:02,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:02,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:02,902 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:02,902 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:34:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:03,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617909764] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:03,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:03,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:34:03,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157084449] [2022-01-18 07:34:03,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:03,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:34:03,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:03,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:34:03,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:34:03,131 INFO L87 Difference]: Start difference. First operand 3468 states and 12464 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:05,657 INFO L93 Difference]: Finished difference Result 6444 states and 21715 transitions. [2022-01-18 07:34:05,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 07:34:05,658 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:05,671 INFO L225 Difference]: With dead ends: 6444 [2022-01-18 07:34:05,671 INFO L226 Difference]: Without dead ends: 6414 [2022-01-18 07:34:05,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1464 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=723, Invalid=4247, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 07:34:05,671 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 270 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 2043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:05,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 446 Invalid, 2043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:34:05,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2022-01-18 07:34:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 3448. [2022-01-18 07:34:05,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3448 states, 3447 states have (on average 3.6011024078909197) internal successors, (12413), 3447 states have internal predecessors, (12413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:05,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3448 states to 3448 states and 12413 transitions. [2022-01-18 07:34:05,747 INFO L78 Accepts]: Start accepts. Automaton has 3448 states and 12413 transitions. Word has length 26 [2022-01-18 07:34:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:05,748 INFO L470 AbstractCegarLoop]: Abstraction has 3448 states and 12413 transitions. [2022-01-18 07:34:05,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3448 states and 12413 transitions. [2022-01-18 07:34:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:05,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:05,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:05,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2022-01-18 07:34:05,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:05,954 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1705225504, now seen corresponding path program 48 times [2022-01-18 07:34:05,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:05,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805188634] [2022-01-18 07:34:05,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:05,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:06,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:06,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805188634] [2022-01-18 07:34:06,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805188634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:06,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8692244] [2022-01-18 07:34:06,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:34:06,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:06,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:06,090 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:06,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 07:34:06,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:34:06,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:06,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:34:06,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:06,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:06,355 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:06,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2022-01-18 07:34:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:06,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:06,523 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:06,537 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:06,537 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 20 treesize of output 55 [2022-01-18 07:34:06,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:06,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:06,688 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:06,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:34:06,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:06,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8692244] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:06,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:06,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:34:06,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521128585] [2022-01-18 07:34:06,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:06,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:34:06,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:06,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:34:06,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:34:06,940 INFO L87 Difference]: Start difference. First operand 3448 states and 12413 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:08,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:08,271 INFO L93 Difference]: Finished difference Result 5237 states and 17842 transitions. [2022-01-18 07:34:08,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 07:34:08,272 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:08,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:08,282 INFO L225 Difference]: With dead ends: 5237 [2022-01-18 07:34:08,282 INFO L226 Difference]: Without dead ends: 5161 [2022-01-18 07:34:08,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=477, Invalid=1973, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 07:34:08,283 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 204 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:08,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 280 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 918 Invalid, 0 Unknown, 195 Unchecked, 0.4s Time] [2022-01-18 07:34:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2022-01-18 07:34:08,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 3474. [2022-01-18 07:34:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 3473 states have (on average 3.593435070544198) internal successors, (12480), 3473 states have internal predecessors, (12480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 12480 transitions. [2022-01-18 07:34:08,349 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 12480 transitions. Word has length 26 [2022-01-18 07:34:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:08,349 INFO L470 AbstractCegarLoop]: Abstraction has 3474 states and 12480 transitions. [2022-01-18 07:34:08,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 12480 transitions. [2022-01-18 07:34:08,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:08,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:08,355 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:08,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-01-18 07:34:08,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-01-18 07:34:08,555 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:08,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash 639330528, now seen corresponding path program 49 times [2022-01-18 07:34:08,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:08,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160930565] [2022-01-18 07:34:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:08,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:08,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:08,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160930565] [2022-01-18 07:34:08,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160930565] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:08,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523116401] [2022-01-18 07:34:08,702 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:34:08,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:08,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:08,703 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:08,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 07:34:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:08,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:08,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:08,963 INFO L353 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-01-18 07:34:08,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 58 [2022-01-18 07:34:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:08,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:09,132 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:34:09,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:34:09,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:09,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:09,267 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:09,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:34:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:09,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523116401] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:09,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:09,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:34:09,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270992358] [2022-01-18 07:34:09,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:09,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:34:09,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:09,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:34:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:34:09,488 INFO L87 Difference]: Start difference. First operand 3474 states and 12480 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:10,358 INFO L93 Difference]: Finished difference Result 5553 states and 18988 transitions. [2022-01-18 07:34:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 07:34:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:10,369 INFO L225 Difference]: With dead ends: 5553 [2022-01-18 07:34:10,369 INFO L226 Difference]: Without dead ends: 5523 [2022-01-18 07:34:10,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=1665, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 07:34:10,369 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 165 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:10,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 290 Invalid, 1167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 913 Invalid, 0 Unknown, 228 Unchecked, 0.4s Time] [2022-01-18 07:34:10,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5523 states. [2022-01-18 07:34:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5523 to 3501. [2022-01-18 07:34:10,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 3.592285714285714) internal successors, (12573), 3500 states have internal predecessors, (12573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 12573 transitions. [2022-01-18 07:34:10,435 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 12573 transitions. Word has length 26 [2022-01-18 07:34:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:10,435 INFO L470 AbstractCegarLoop]: Abstraction has 3501 states and 12573 transitions. [2022-01-18 07:34:10,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 12573 transitions. [2022-01-18 07:34:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:10,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:10,441 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:10,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-01-18 07:34:10,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-01-18 07:34:10,642 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:10,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:10,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1438671812, now seen corresponding path program 50 times [2022-01-18 07:34:10,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:10,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487728947] [2022-01-18 07:34:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:10,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:10,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:10,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487728947] [2022-01-18 07:34:10,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487728947] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:10,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837144230] [2022-01-18 07:34:10,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:34:10,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:10,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:10,764 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:10,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 07:34:10,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:34:10,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:10,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:10,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:11,023 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-18 07:34:11,024 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 63 [2022-01-18 07:34:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:11,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:11,229 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:34:11,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:34:11,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:11,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:11,363 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:11,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:34:11,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:11,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837144230] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:11,600 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:11,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:34:11,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321455989] [2022-01-18 07:34:11,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:11,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:34:11,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:11,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:34:11,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:34:11,601 INFO L87 Difference]: Start difference. First operand 3501 states and 12573 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:13,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:13,660 INFO L93 Difference]: Finished difference Result 5636 states and 19278 transitions. [2022-01-18 07:34:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 07:34:13,660 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:13,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:13,672 INFO L225 Difference]: With dead ends: 5636 [2022-01-18 07:34:13,672 INFO L226 Difference]: Without dead ends: 5621 [2022-01-18 07:34:13,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=573, Invalid=3587, Unknown=0, NotChecked=0, Total=4160 [2022-01-18 07:34:13,673 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 223 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:13,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 464 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:34:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5621 states. [2022-01-18 07:34:13,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5621 to 3519. [2022-01-18 07:34:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3519 states, 3518 states have (on average 3.590108015918135) internal successors, (12630), 3518 states have internal predecessors, (12630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 12630 transitions. [2022-01-18 07:34:13,747 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 12630 transitions. Word has length 26 [2022-01-18 07:34:13,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:13,747 INFO L470 AbstractCegarLoop]: Abstraction has 3519 states and 12630 transitions. [2022-01-18 07:34:13,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 12630 transitions. [2022-01-18 07:34:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:13,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:13,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:13,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-01-18 07:34:13,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:13,967 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:13,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1868803872, now seen corresponding path program 51 times [2022-01-18 07:34:13,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:13,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102990175] [2022-01-18 07:34:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:13,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:14,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:14,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102990175] [2022-01-18 07:34:14,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102990175] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:14,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692015690] [2022-01-18 07:34:14,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:34:14,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:14,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:14,105 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:14,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 07:34:14,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:34:14,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:14,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:14,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:14,376 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-18 07:34:14,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 65 [2022-01-18 07:34:14,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:14,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:14,623 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:14,623 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:34:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:15,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692015690] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:15,568 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:15,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:34:15,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325862994] [2022-01-18 07:34:15,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:15,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:34:15,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:34:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:34:15,568 INFO L87 Difference]: Start difference. First operand 3519 states and 12630 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:16,796 INFO L93 Difference]: Finished difference Result 5158 states and 17645 transitions. [2022-01-18 07:34:16,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 07:34:16,797 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:16,807 INFO L225 Difference]: With dead ends: 5158 [2022-01-18 07:34:16,807 INFO L226 Difference]: Without dead ends: 5082 [2022-01-18 07:34:16,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=420, Invalid=1650, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 07:34:16,807 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 216 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 472 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:16,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 249 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 449 Invalid, 0 Unknown, 472 Unchecked, 0.2s Time] [2022-01-18 07:34:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-01-18 07:34:16,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 3543. [2022-01-18 07:34:16,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 3542 states have (on average 3.5928853754940713) internal successors, (12726), 3542 states have internal predecessors, (12726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 12726 transitions. [2022-01-18 07:34:16,872 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 12726 transitions. Word has length 26 [2022-01-18 07:34:16,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:16,873 INFO L470 AbstractCegarLoop]: Abstraction has 3543 states and 12726 transitions. [2022-01-18 07:34:16,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:16,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 12726 transitions. [2022-01-18 07:34:16,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:16,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:16,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:16,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-01-18 07:34:17,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:17,080 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:17,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1742870530, now seen corresponding path program 52 times [2022-01-18 07:34:17,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:17,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929591882] [2022-01-18 07:34:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:17,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:17,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:17,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:17,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929591882] [2022-01-18 07:34:17,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929591882] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:17,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584305837] [2022-01-18 07:34:17,200 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:34:17,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:17,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:17,201 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:17,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 07:34:17,220 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:34:17,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:17,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:17,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:17,463 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-18 07:34:17,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 65 [2022-01-18 07:34:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:17,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:17,737 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:17,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:34:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:18,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584305837] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:18,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:18,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:34:18,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304315949] [2022-01-18 07:34:18,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:18,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:34:18,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:18,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:34:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:34:18,513 INFO L87 Difference]: Start difference. First operand 3543 states and 12726 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:19,828 INFO L93 Difference]: Finished difference Result 5144 states and 17580 transitions. [2022-01-18 07:34:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 07:34:19,829 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:19,839 INFO L225 Difference]: With dead ends: 5144 [2022-01-18 07:34:19,839 INFO L226 Difference]: Without dead ends: 5068 [2022-01-18 07:34:19,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=440, Invalid=1722, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 07:34:19,839 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 171 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:19,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 249 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 427 Invalid, 0 Unknown, 409 Unchecked, 0.2s Time] [2022-01-18 07:34:19,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2022-01-18 07:34:19,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 3537. [2022-01-18 07:34:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3537 states, 3536 states have (on average 3.5924773755656108) internal successors, (12703), 3536 states have internal predecessors, (12703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3537 states to 3537 states and 12703 transitions. [2022-01-18 07:34:19,902 INFO L78 Accepts]: Start accepts. Automaton has 3537 states and 12703 transitions. Word has length 26 [2022-01-18 07:34:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:19,902 INFO L470 AbstractCegarLoop]: Abstraction has 3537 states and 12703 transitions. [2022-01-18 07:34:19,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3537 states and 12703 transitions. [2022-01-18 07:34:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:19,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:19,907 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:19,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 07:34:20,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-01-18 07:34:20,107 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash 615736860, now seen corresponding path program 53 times [2022-01-18 07:34:20,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:20,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045765730] [2022-01-18 07:34:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:20,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:20,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045765730] [2022-01-18 07:34:20,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045765730] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839884380] [2022-01-18 07:34:20,248 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:34:20,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:20,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:20,249 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:20,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 07:34:20,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:34:20,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:20,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 07:34:20,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:20,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:20,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:20,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 36 [2022-01-18 07:34:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:20,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:20,783 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:20,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:34:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:21,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839884380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:21,426 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:21,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:34:21,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874161468] [2022-01-18 07:34:21,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:21,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:34:21,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:21,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:34:21,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:34:21,427 INFO L87 Difference]: Start difference. First operand 3537 states and 12703 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:23,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:23,045 INFO L93 Difference]: Finished difference Result 4499 states and 15523 transitions. [2022-01-18 07:34:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 07:34:23,046 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:23,054 INFO L225 Difference]: With dead ends: 4499 [2022-01-18 07:34:23,054 INFO L226 Difference]: Without dead ends: 4439 [2022-01-18 07:34:23,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1190 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=609, Invalid=3173, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 07:34:23,055 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 201 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 635 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:23,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 217 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 389 Invalid, 0 Unknown, 635 Unchecked, 0.2s Time] [2022-01-18 07:34:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4439 states. [2022-01-18 07:34:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4439 to 3602. [2022-01-18 07:34:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3602 states, 3601 states have (on average 3.5945570674812553) internal successors, (12944), 3601 states have internal predecessors, (12944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3602 states to 3602 states and 12944 transitions. [2022-01-18 07:34:23,116 INFO L78 Accepts]: Start accepts. Automaton has 3602 states and 12944 transitions. Word has length 26 [2022-01-18 07:34:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:23,116 INFO L470 AbstractCegarLoop]: Abstraction has 3602 states and 12944 transitions. [2022-01-18 07:34:23,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3602 states and 12944 transitions. [2022-01-18 07:34:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:23,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:23,122 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:23,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-01-18 07:34:23,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:23,323 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:23,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:23,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1041593588, now seen corresponding path program 54 times [2022-01-18 07:34:23,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:23,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250929567] [2022-01-18 07:34:23,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:23,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:23,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250929567] [2022-01-18 07:34:23,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250929567] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:23,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21851916] [2022-01-18 07:34:23,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:34:23,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:23,449 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:23,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 07:34:23,469 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 07:34:23,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:23,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:34:23,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:23,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:23,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:23,691 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:23,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2022-01-18 07:34:23,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:23,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:23,908 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:34:23,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:34:24,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:24,033 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:24,045 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:24,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:34:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:24,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21851916] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:24,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:24,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:34:24,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612849286] [2022-01-18 07:34:24,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:24,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:34:24,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:24,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:34:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:34:24,300 INFO L87 Difference]: Start difference. First operand 3602 states and 12944 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:26,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:26,825 INFO L93 Difference]: Finished difference Result 6706 states and 22509 transitions. [2022-01-18 07:34:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 07:34:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:26,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:26,839 INFO L225 Difference]: With dead ends: 6706 [2022-01-18 07:34:26,839 INFO L226 Difference]: Without dead ends: 6604 [2022-01-18 07:34:26,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1773 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=925, Invalid=5237, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 07:34:26,840 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 322 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:26,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 510 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2112 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:34:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6604 states. [2022-01-18 07:34:26,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6604 to 3627. [2022-01-18 07:34:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3626 states have (on average 3.5948703805846662) internal successors, (13035), 3626 states have internal predecessors, (13035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 13035 transitions. [2022-01-18 07:34:26,915 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 13035 transitions. Word has length 26 [2022-01-18 07:34:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:26,915 INFO L470 AbstractCegarLoop]: Abstraction has 3627 states and 13035 transitions. [2022-01-18 07:34:26,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 13035 transitions. [2022-01-18 07:34:26,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:26,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:26,921 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:26,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-01-18 07:34:27,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:27,136 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 370220598, now seen corresponding path program 55 times [2022-01-18 07:34:27,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:27,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394389607] [2022-01-18 07:34:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:27,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:27,272 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:27,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:27,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394389607] [2022-01-18 07:34:27,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394389607] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:27,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225528686] [2022-01-18 07:34:27,272 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:34:27,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:27,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:27,274 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:27,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 07:34:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:27,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:27,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:27,542 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-18 07:34:27,543 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 60 [2022-01-18 07:34:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:27,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:27,811 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:27,811 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:34:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:28,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225528686] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:28,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:28,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:34:28,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821288233] [2022-01-18 07:34:28,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:28,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:34:28,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:28,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:34:28,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:34:28,570 INFO L87 Difference]: Start difference. First operand 3627 states and 13035 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:29,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:29,804 INFO L93 Difference]: Finished difference Result 5475 states and 18680 transitions. [2022-01-18 07:34:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 07:34:29,804 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:29,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:29,815 INFO L225 Difference]: With dead ends: 5475 [2022-01-18 07:34:29,815 INFO L226 Difference]: Without dead ends: 5399 [2022-01-18 07:34:29,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=417, Invalid=1653, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 07:34:29,815 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 262 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 386 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:29,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 179 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 406 Invalid, 0 Unknown, 386 Unchecked, 0.2s Time] [2022-01-18 07:34:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2022-01-18 07:34:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 3633. [2022-01-18 07:34:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3632 states have (on average 3.592786343612335) internal successors, (13049), 3632 states have internal predecessors, (13049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 13049 transitions. [2022-01-18 07:34:29,885 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 13049 transitions. Word has length 26 [2022-01-18 07:34:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:29,885 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 13049 transitions. [2022-01-18 07:34:29,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 24 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 13049 transitions. [2022-01-18 07:34:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:29,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:29,891 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:29,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 07:34:30,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 07:34:30,092 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:30,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:30,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1124130446, now seen corresponding path program 47 times [2022-01-18 07:34:30,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:30,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033284638] [2022-01-18 07:34:30,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:30,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:30,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:30,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033284638] [2022-01-18 07:34:30,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033284638] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:30,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073320697] [2022-01-18 07:34:30,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:34:30,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:30,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:30,280 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:30,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 07:34:30,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:34:30,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:30,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:30,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:30,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:30,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:30,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:30,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 15 [2022-01-18 07:34:30,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:30,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:30,662 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:34:30,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:34:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:30,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073320697] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:30,778 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:30,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 07:34:30,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039640084] [2022-01-18 07:34:30,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:30,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:34:30,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:30,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:34:30,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:34:30,779 INFO L87 Difference]: Start difference. First operand 3633 states and 13049 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:31,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:31,487 INFO L93 Difference]: Finished difference Result 5078 states and 17638 transitions. [2022-01-18 07:34:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 07:34:31,487 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:31,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:31,497 INFO L225 Difference]: With dead ends: 5078 [2022-01-18 07:34:31,497 INFO L226 Difference]: Without dead ends: 5030 [2022-01-18 07:34:31,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=318, Invalid=1662, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 07:34:31,498 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 167 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:31,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 233 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:34:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5030 states. [2022-01-18 07:34:31,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5030 to 3623. [2022-01-18 07:34:31,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3622 states have (on average 3.5919381557150745) internal successors, (13010), 3622 states have internal predecessors, (13010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 13010 transitions. [2022-01-18 07:34:31,567 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 13010 transitions. Word has length 26 [2022-01-18 07:34:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:31,567 INFO L470 AbstractCegarLoop]: Abstraction has 3623 states and 13010 transitions. [2022-01-18 07:34:31,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 13010 transitions. [2022-01-18 07:34:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:31,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:31,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:31,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-18 07:34:31,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 07:34:31,773 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:31,774 INFO L85 PathProgramCache]: Analyzing trace with hash 281045340, now seen corresponding path program 48 times [2022-01-18 07:34:31,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:31,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854192300] [2022-01-18 07:34:31,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:31,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:31,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:31,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854192300] [2022-01-18 07:34:31,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854192300] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:31,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312623351] [2022-01-18 07:34:31,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:34:31,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:31,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:31,925 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:31,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 07:34:31,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:34:31,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:31,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 07:34:31,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:32,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:32,251 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:32,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29 [2022-01-18 07:34:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:32,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:32,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:32,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:32,516 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:32,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:34:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:32,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312623351] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:32,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:32,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 07:34:32,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499417416] [2022-01-18 07:34:32,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:32,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 07:34:32,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:32,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 07:34:32,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:34:32,672 INFO L87 Difference]: Start difference. First operand 3623 states and 13010 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:34,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:34,143 INFO L93 Difference]: Finished difference Result 5098 states and 17401 transitions. [2022-01-18 07:34:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 07:34:34,144 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:34,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:34,153 INFO L225 Difference]: With dead ends: 5098 [2022-01-18 07:34:34,153 INFO L226 Difference]: Without dead ends: 5053 [2022-01-18 07:34:34,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=699, Invalid=4413, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 07:34:34,154 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 275 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:34,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 445 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 808 Invalid, 0 Unknown, 463 Unchecked, 0.3s Time] [2022-01-18 07:34:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5053 states. [2022-01-18 07:34:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5053 to 3665. [2022-01-18 07:34:34,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3664 states have (on average 3.586517467248908) internal successors, (13141), 3664 states have internal predecessors, (13141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:34,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 13141 transitions. [2022-01-18 07:34:34,220 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 13141 transitions. Word has length 26 [2022-01-18 07:34:34,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:34,220 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 13141 transitions. [2022-01-18 07:34:34,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:34,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 13141 transitions. [2022-01-18 07:34:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:34,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:34,226 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:34,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-18 07:34:34,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:34,427 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:34,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1348919904, now seen corresponding path program 49 times [2022-01-18 07:34:34,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:34,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83536200] [2022-01-18 07:34:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:34,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:34,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:34,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83536200] [2022-01-18 07:34:34,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83536200] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:34,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257233309] [2022-01-18 07:34:34,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:34:34,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:34,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:34,601 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:34,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 07:34:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:34,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:34:34,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:34,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:34,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:34,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:34,828 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:34,829 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 21 [2022-01-18 07:34:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:34,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:34,947 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:34:34,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:34:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:35,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257233309] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:35,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:35,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2022-01-18 07:34:35,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88784528] [2022-01-18 07:34:35,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:35,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:34:35,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:35,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:34:35,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:34:35,298 INFO L87 Difference]: Start difference. First operand 3665 states and 13141 transitions. Second operand has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:36,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:36,381 INFO L93 Difference]: Finished difference Result 4946 states and 17235 transitions. [2022-01-18 07:34:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-01-18 07:34:36,383 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:36,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:36,393 INFO L225 Difference]: With dead ends: 4946 [2022-01-18 07:34:36,393 INFO L226 Difference]: Without dead ends: 4860 [2022-01-18 07:34:36,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=390, Invalid=2060, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 07:34:36,393 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 160 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:36,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 403 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1316 Invalid, 0 Unknown, 369 Unchecked, 0.5s Time] [2022-01-18 07:34:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2022-01-18 07:34:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 3679. [2022-01-18 07:34:36,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3679 states, 3678 states have (on average 3.5807504078303425) internal successors, (13170), 3678 states have internal predecessors, (13170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:36,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3679 states to 3679 states and 13170 transitions. [2022-01-18 07:34:36,456 INFO L78 Accepts]: Start accepts. Automaton has 3679 states and 13170 transitions. Word has length 26 [2022-01-18 07:34:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:36,457 INFO L470 AbstractCegarLoop]: Abstraction has 3679 states and 13170 transitions. [2022-01-18 07:34:36,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.6956521739130435) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:36,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3679 states and 13170 transitions. [2022-01-18 07:34:36,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:36,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:36,463 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:36,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-18 07:34:36,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:36,663 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:36,663 INFO L85 PathProgramCache]: Analyzing trace with hash 65573818, now seen corresponding path program 50 times [2022-01-18 07:34:36,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:36,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198040] [2022-01-18 07:34:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:36,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:36,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:36,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198040] [2022-01-18 07:34:36,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198040] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:36,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932973335] [2022-01-18 07:34:36,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:34:36,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:36,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:36,846 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:36,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 07:34:36,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:34:36,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:36,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:36,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:37,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:37,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:37,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:37,119 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:37,119 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2022-01-18 07:34:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:37,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:37,222 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:34:37,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:34:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:37,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932973335] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:37,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:37,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 07:34:37,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998477258] [2022-01-18 07:34:37,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:37,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:34:37,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:34:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:34:37,367 INFO L87 Difference]: Start difference. First operand 3679 states and 13170 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:38,177 INFO L93 Difference]: Finished difference Result 4996 states and 17400 transitions. [2022-01-18 07:34:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 07:34:38,177 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:38,186 INFO L225 Difference]: With dead ends: 4996 [2022-01-18 07:34:38,186 INFO L226 Difference]: Without dead ends: 4966 [2022-01-18 07:34:38,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=361, Invalid=1991, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 07:34:38,186 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 149 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:38,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 267 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:34:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4966 states. [2022-01-18 07:34:38,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4966 to 3665. [2022-01-18 07:34:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 3664 states have (on average 3.5848799126637556) internal successors, (13135), 3664 states have internal predecessors, (13135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:38,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 13135 transitions. [2022-01-18 07:34:38,244 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 13135 transitions. Word has length 26 [2022-01-18 07:34:38,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:38,244 INFO L470 AbstractCegarLoop]: Abstraction has 3665 states and 13135 transitions. [2022-01-18 07:34:38,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:38,244 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 13135 transitions. [2022-01-18 07:34:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:38,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:38,250 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:38,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-01-18 07:34:38,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-01-18 07:34:38,451 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:38,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash -308346528, now seen corresponding path program 51 times [2022-01-18 07:34:38,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:38,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633613129] [2022-01-18 07:34:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:38,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:38,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:38,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633613129] [2022-01-18 07:34:38,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633613129] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:38,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581616816] [2022-01-18 07:34:38,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:34:38,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:38,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:38,623 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:38,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 07:34:38,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:34:38,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:38,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:34:38,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:38,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:38,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:38,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:38,857 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:38,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 48 [2022-01-18 07:34:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:38,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:39,039 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:39,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:39,040 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:39,056 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:39,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:34:39,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:39,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581616816] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:39,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:39,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-01-18 07:34:39,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117485137] [2022-01-18 07:34:39,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:39,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:34:39,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:39,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:34:39,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:34:39,156 INFO L87 Difference]: Start difference. First operand 3665 states and 13135 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:40,307 INFO L93 Difference]: Finished difference Result 4946 states and 17322 transitions. [2022-01-18 07:34:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 07:34:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:40,317 INFO L225 Difference]: With dead ends: 4946 [2022-01-18 07:34:40,317 INFO L226 Difference]: Without dead ends: 4916 [2022-01-18 07:34:40,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=540, Invalid=2652, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 07:34:40,318 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 184 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:40,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 242 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1133 Invalid, 0 Unknown, 33 Unchecked, 0.4s Time] [2022-01-18 07:34:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4916 states. [2022-01-18 07:34:40,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4916 to 3772. [2022-01-18 07:34:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 3771 states have (on average 3.592150623176876) internal successors, (13546), 3771 states have internal predecessors, (13546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:40,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 13546 transitions. [2022-01-18 07:34:40,398 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 13546 transitions. Word has length 26 [2022-01-18 07:34:40,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:40,398 INFO L470 AbstractCegarLoop]: Abstraction has 3772 states and 13546 transitions. [2022-01-18 07:34:40,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:40,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 13546 transitions. [2022-01-18 07:34:40,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:40,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:40,404 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:40,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-01-18 07:34:40,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 07:34:40,605 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:40,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:40,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1165871128, now seen corresponding path program 52 times [2022-01-18 07:34:40,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:40,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484066835] [2022-01-18 07:34:40,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:40,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:40,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:40,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484066835] [2022-01-18 07:34:40,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484066835] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:40,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203683601] [2022-01-18 07:34:40,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:34:40,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:40,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:40,795 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:40,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 07:34:40,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:34:40,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:40,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:34:40,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:41,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:41,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:41,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:41,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-01-18 07:34:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:41,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:41,151 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:34:41,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:34:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:41,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203683601] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:41,289 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:41,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2022-01-18 07:34:41,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615326778] [2022-01-18 07:34:41,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:41,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:34:41,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:41,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:34:41,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:34:41,289 INFO L87 Difference]: Start difference. First operand 3772 states and 13546 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:41,672 INFO L93 Difference]: Finished difference Result 4582 states and 16225 transitions. [2022-01-18 07:34:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 07:34:41,672 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:41,681 INFO L225 Difference]: With dead ends: 4582 [2022-01-18 07:34:41,681 INFO L226 Difference]: Without dead ends: 4567 [2022-01-18 07:34:41,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=989, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 07:34:41,682 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 109 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:41,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 221 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 375 Invalid, 0 Unknown, 351 Unchecked, 0.1s Time] [2022-01-18 07:34:41,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2022-01-18 07:34:41,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 3782. [2022-01-18 07:34:41,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3781 states have (on average 3.5919069029357313) internal successors, (13581), 3781 states have internal predecessors, (13581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 13581 transitions. [2022-01-18 07:34:41,744 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 13581 transitions. Word has length 26 [2022-01-18 07:34:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:41,744 INFO L470 AbstractCegarLoop]: Abstraction has 3782 states and 13581 transitions. [2022-01-18 07:34:41,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 13581 transitions. [2022-01-18 07:34:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:41,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:41,750 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:41,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-01-18 07:34:41,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:41,951 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1961622048, now seen corresponding path program 56 times [2022-01-18 07:34:41,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:41,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908032807] [2022-01-18 07:34:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:41,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:42,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:42,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908032807] [2022-01-18 07:34:42,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908032807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:42,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015275984] [2022-01-18 07:34:42,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:34:42,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:42,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:42,120 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:42,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 07:34:42,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:34:42,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:42,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:42,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:42,358 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:42,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2022-01-18 07:34:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:42,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:42,607 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:34:42,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:34:42,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:42,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:42,725 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:42,725 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:34:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:42,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015275984] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:42,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:42,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:34:42,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776133798] [2022-01-18 07:34:42,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:42,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:34:42,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:42,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:34:42,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:34:42,937 INFO L87 Difference]: Start difference. First operand 3782 states and 13581 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:46,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:46,592 INFO L93 Difference]: Finished difference Result 7327 states and 24308 transitions. [2022-01-18 07:34:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 07:34:46,592 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:46,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:46,607 INFO L225 Difference]: With dead ends: 7327 [2022-01-18 07:34:46,607 INFO L226 Difference]: Without dead ends: 7297 [2022-01-18 07:34:46,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2338 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1078, Invalid=6062, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 07:34:46,608 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 445 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 2549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:46,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 608 Invalid, 2549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 07:34:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7297 states. [2022-01-18 07:34:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7297 to 3823. [2022-01-18 07:34:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3822 states have (on average 3.5907901622187337) internal successors, (13724), 3822 states have internal predecessors, (13724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 13724 transitions. [2022-01-18 07:34:46,697 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 13724 transitions. Word has length 26 [2022-01-18 07:34:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:46,698 INFO L470 AbstractCegarLoop]: Abstraction has 3823 states and 13724 transitions. [2022-01-18 07:34:46,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:46,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 13724 transitions. [2022-01-18 07:34:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:46,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:46,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:46,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 07:34:46,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:46,905 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:46,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash -411240484, now seen corresponding path program 53 times [2022-01-18 07:34:46,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:46,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647346455] [2022-01-18 07:34:46,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:46,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:47,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:47,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647346455] [2022-01-18 07:34:47,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647346455] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:47,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26762452] [2022-01-18 07:34:47,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:34:47,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:47,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:47,030 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:47,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 07:34:47,049 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:34:47,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:47,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:47,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:47,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:47,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:47,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:47,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-01-18 07:34:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:47,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:47,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:47,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:47,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:47,434 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:47,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:34:47,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:47,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26762452] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:47,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:34:47,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072566063] [2022-01-18 07:34:47,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:47,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:34:47,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:47,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:34:47,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:34:47,526 INFO L87 Difference]: Start difference. First operand 3823 states and 13724 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:48,684 INFO L93 Difference]: Finished difference Result 5770 states and 19224 transitions. [2022-01-18 07:34:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 07:34:48,684 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:48,695 INFO L225 Difference]: With dead ends: 5770 [2022-01-18 07:34:48,695 INFO L226 Difference]: Without dead ends: 5710 [2022-01-18 07:34:48,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=641, Invalid=2781, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 07:34:48,696 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 441 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:48,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 319 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:34:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2022-01-18 07:34:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 3968. [2022-01-18 07:34:48,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 3.596672548525334) internal successors, (14268), 3967 states have internal predecessors, (14268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:48,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 14268 transitions. [2022-01-18 07:34:48,771 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 14268 transitions. Word has length 26 [2022-01-18 07:34:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:48,772 INFO L470 AbstractCegarLoop]: Abstraction has 3968 states and 14268 transitions. [2022-01-18 07:34:48,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 23 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 14268 transitions. [2022-01-18 07:34:48,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:48,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:48,778 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:48,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-01-18 07:34:48,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2022-01-18 07:34:48,978 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:48,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1423144386, now seen corresponding path program 54 times [2022-01-18 07:34:48,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:48,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920808237] [2022-01-18 07:34:48,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:48,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:49,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:49,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920808237] [2022-01-18 07:34:49,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920808237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:49,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231687113] [2022-01-18 07:34:49,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:34:49,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:49,117 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:49,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 07:34:49,136 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:34:49,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:49,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 07:34:49,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:49,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:49,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:49,439 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2022-01-18 07:34:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:49,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:49,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:49,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:49,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-01-18 07:34:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-18 07:34:49,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,707 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-18 07:34:49,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-18 07:34:49,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-18 07:34:49,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-18 07:34:49,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:49,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-01-18 07:34:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:34:49,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231687113] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:49,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:49,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 27 [2022-01-18 07:34:49,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519546937] [2022-01-18 07:34:49,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:49,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:34:49,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:49,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:34:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=568, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:34:49,809 INFO L87 Difference]: Start difference. First operand 3968 states and 14268 transitions. Second operand has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:52,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:52,365 INFO L93 Difference]: Finished difference Result 9552 states and 31345 transitions. [2022-01-18 07:34:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-01-18 07:34:52,365 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:52,403 INFO L225 Difference]: With dead ends: 9552 [2022-01-18 07:34:52,403 INFO L226 Difference]: Without dead ends: 9467 [2022-01-18 07:34:52,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 28 SyntacticMatches, 8 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2866 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1560, Invalid=7182, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 07:34:52,404 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 455 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:52,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 546 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1672 Invalid, 0 Unknown, 288 Unchecked, 0.8s Time] [2022-01-18 07:34:52,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2022-01-18 07:34:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 4484. [2022-01-18 07:34:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4484 states, 4483 states have (on average 3.6165514164621904) internal successors, (16213), 4483 states have internal predecessors, (16213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:52,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 16213 transitions. [2022-01-18 07:34:52,509 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 16213 transitions. Word has length 26 [2022-01-18 07:34:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:52,509 INFO L470 AbstractCegarLoop]: Abstraction has 4484 states and 16213 transitions. [2022-01-18 07:34:52,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 16213 transitions. [2022-01-18 07:34:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:52,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:52,516 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:52,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-01-18 07:34:52,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-18 07:34:52,717 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:52,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:52,717 INFO L85 PathProgramCache]: Analyzing trace with hash -579049576, now seen corresponding path program 55 times [2022-01-18 07:34:52,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:52,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576212196] [2022-01-18 07:34:52,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:52,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:52,854 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:52,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:52,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576212196] [2022-01-18 07:34:52,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576212196] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:52,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421690978] [2022-01-18 07:34:52,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:34:52,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:52,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:52,856 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:52,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 07:34:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:52,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:34:52,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:53,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:53,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:34:53,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:53,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:34:53,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2022-01-18 07:34:53,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:53,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:53,259 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:34:53,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:34:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:53,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421690978] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:34:53,400 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:34:53,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2022-01-18 07:34:53,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426357871] [2022-01-18 07:34:53,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:34:53,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:34:53,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:34:53,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:34:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:34:53,401 INFO L87 Difference]: Start difference. First operand 4484 states and 16213 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:58,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:34:58,098 INFO L93 Difference]: Finished difference Result 9683 states and 32510 transitions. [2022-01-18 07:34:58,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 07:34:58,098 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:34:58,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:34:58,118 INFO L225 Difference]: With dead ends: 9683 [2022-01-18 07:34:58,118 INFO L226 Difference]: Without dead ends: 9592 [2022-01-18 07:34:58,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5303 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2221, Invalid=12541, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 07:34:58,119 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 448 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:34:58,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [448 Valid, 696 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 07:34:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9592 states. [2022-01-18 07:34:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9592 to 4636. [2022-01-18 07:34:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4636 states, 4635 states have (on average 3.6306364617044227) internal successors, (16828), 4635 states have internal predecessors, (16828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:58,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 16828 transitions. [2022-01-18 07:34:58,240 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 16828 transitions. Word has length 26 [2022-01-18 07:34:58,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:34:58,240 INFO L470 AbstractCegarLoop]: Abstraction has 4636 states and 16828 transitions. [2022-01-18 07:34:58,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:34:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 16828 transitions. [2022-01-18 07:34:58,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:34:58,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:34:58,247 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:34:58,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2022-01-18 07:34:58,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 07:34:58,450 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:34:58,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:34:58,450 INFO L85 PathProgramCache]: Analyzing trace with hash -796062908, now seen corresponding path program 57 times [2022-01-18 07:34:58,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:34:58,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807526444] [2022-01-18 07:34:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:34:58,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:34:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:34:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:58,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:34:58,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807526444] [2022-01-18 07:34:58,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807526444] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:34:58,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920744962] [2022-01-18 07:34:58,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:34:58,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:34:58,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:34:58,608 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:34:58,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 07:34:58,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:34:58,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:34:58,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:34:58,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:34:58,919 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:58,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 49 [2022-01-18 07:34:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:34:59,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:34:59,431 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:34:59,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:35:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:00,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920744962] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:00,240 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:00,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2022-01-18 07:35:00,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623465175] [2022-01-18 07:35:00,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:00,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:35:00,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:00,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:35:00,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:35:00,241 INFO L87 Difference]: Start difference. First operand 4636 states and 16828 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:02,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:02,215 INFO L93 Difference]: Finished difference Result 8331 states and 28855 transitions. [2022-01-18 07:35:02,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 07:35:02,216 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:02,233 INFO L225 Difference]: With dead ends: 8331 [2022-01-18 07:35:02,234 INFO L226 Difference]: Without dead ends: 8301 [2022-01-18 07:35:02,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1267 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=585, Invalid=3837, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 07:35:02,234 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 254 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 960 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:02,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 626 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 996 Invalid, 0 Unknown, 960 Unchecked, 0.5s Time] [2022-01-18 07:35:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2022-01-18 07:35:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 4655. [2022-01-18 07:35:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4655 states, 4654 states have (on average 3.6304254404813063) internal successors, (16896), 4654 states have internal predecessors, (16896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4655 states to 4655 states and 16896 transitions. [2022-01-18 07:35:02,343 INFO L78 Accepts]: Start accepts. Automaton has 4655 states and 16896 transitions. Word has length 26 [2022-01-18 07:35:02,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:02,343 INFO L470 AbstractCegarLoop]: Abstraction has 4655 states and 16896 transitions. [2022-01-18 07:35:02,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4655 states and 16896 transitions. [2022-01-18 07:35:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:02,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:02,351 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:02,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 07:35:02,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-01-18 07:35:02,551 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:02,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:02,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2004996666, now seen corresponding path program 58 times [2022-01-18 07:35:02,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:02,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743227961] [2022-01-18 07:35:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:02,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:02,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:02,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743227961] [2022-01-18 07:35:02,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743227961] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:02,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887931356] [2022-01-18 07:35:02,703 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:35:02,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:02,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:02,704 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:02,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 07:35:02,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:35:02,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:02,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:02,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:03,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:03,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:03,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-01-18 07:35:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:03,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:03,261 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:03,261 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:35:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:04,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887931356] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:04,009 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:04,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:35:04,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723063305] [2022-01-18 07:35:04,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:04,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:35:04,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:35:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:35:04,009 INFO L87 Difference]: Start difference. First operand 4655 states and 16896 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:05,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:05,943 INFO L93 Difference]: Finished difference Result 8027 states and 27505 transitions. [2022-01-18 07:35:05,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 07:35:05,943 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:05,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:05,959 INFO L225 Difference]: With dead ends: 8027 [2022-01-18 07:35:05,959 INFO L226 Difference]: Without dead ends: 8000 [2022-01-18 07:35:05,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1285 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=720, Invalid=3312, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 07:35:05,960 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 340 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 548 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:05,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 359 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 869 Invalid, 0 Unknown, 548 Unchecked, 0.4s Time] [2022-01-18 07:35:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8000 states. [2022-01-18 07:35:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8000 to 4709. [2022-01-18 07:35:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4709 states, 4708 states have (on average 3.6319031435853866) internal successors, (17099), 4708 states have internal predecessors, (17099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4709 states to 4709 states and 17099 transitions. [2022-01-18 07:35:06,056 INFO L78 Accepts]: Start accepts. Automaton has 4709 states and 17099 transitions. Word has length 26 [2022-01-18 07:35:06,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:06,056 INFO L470 AbstractCegarLoop]: Abstraction has 4709 states and 17099 transitions. [2022-01-18 07:35:06,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:06,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4709 states and 17099 transitions. [2022-01-18 07:35:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:06,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:06,064 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:06,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-01-18 07:35:06,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:06,265 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:06,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:06,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1881371608, now seen corresponding path program 59 times [2022-01-18 07:35:06,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:06,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277731092] [2022-01-18 07:35:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:06,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:06,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:06,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277731092] [2022-01-18 07:35:06,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277731092] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:06,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240091600] [2022-01-18 07:35:06,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:35:06,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:06,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:06,397 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:06,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 07:35:06,416 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:35:06,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:06,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:35:06,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:06,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:06,628 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:06,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2022-01-18 07:35:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:06,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:06,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:06,828 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:06,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:35:06,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:06,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:06,993 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:06,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:35:07,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:07,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240091600] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:07,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:07,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2022-01-18 07:35:07,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120576345] [2022-01-18 07:35:07,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:07,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:35:07,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:35:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:35:07,209 INFO L87 Difference]: Start difference. First operand 4709 states and 17099 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:10,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:10,857 INFO L93 Difference]: Finished difference Result 9704 states and 33509 transitions. [2022-01-18 07:35:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 07:35:10,857 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:10,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:10,877 INFO L225 Difference]: With dead ends: 9704 [2022-01-18 07:35:10,877 INFO L226 Difference]: Without dead ends: 9674 [2022-01-18 07:35:10,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3541 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1437, Invalid=7683, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 07:35:10,877 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 369 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 956 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:10,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 536 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1270 Invalid, 0 Unknown, 956 Unchecked, 0.6s Time] [2022-01-18 07:35:10,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9674 states. [2022-01-18 07:35:10,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9674 to 4733. [2022-01-18 07:35:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4733 states, 4732 states have (on average 3.6377852916314453) internal successors, (17214), 4732 states have internal predecessors, (17214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4733 states to 4733 states and 17214 transitions. [2022-01-18 07:35:10,985 INFO L78 Accepts]: Start accepts. Automaton has 4733 states and 17214 transitions. Word has length 26 [2022-01-18 07:35:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:10,985 INFO L470 AbstractCegarLoop]: Abstraction has 4733 states and 17214 transitions. [2022-01-18 07:35:10,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:10,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4733 states and 17214 transitions. [2022-01-18 07:35:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:10,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:10,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:11,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-01-18 07:35:11,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:11,193 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash -366047686, now seen corresponding path program 60 times [2022-01-18 07:35:11,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:11,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504117624] [2022-01-18 07:35:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:11,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:11,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:11,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504117624] [2022-01-18 07:35:11,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504117624] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:11,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148964086] [2022-01-18 07:35:11,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:35:11,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:11,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:11,350 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:11,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 07:35:11,369 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:35:11,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:11,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:11,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:11,633 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-18 07:35:11,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 68 [2022-01-18 07:35:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:11,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:12,031 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:12,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-01-18 07:35:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:12,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148964086] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:12,881 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:12,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 26 [2022-01-18 07:35:12,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841871481] [2022-01-18 07:35:12,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:12,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:35:12,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:35:12,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:35:12,881 INFO L87 Difference]: Start difference. First operand 4733 states and 17214 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:16,258 INFO L93 Difference]: Finished difference Result 9076 states and 30926 transitions. [2022-01-18 07:35:16,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 07:35:16,259 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:16,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:16,277 INFO L225 Difference]: With dead ends: 9076 [2022-01-18 07:35:16,277 INFO L226 Difference]: Without dead ends: 9040 [2022-01-18 07:35:16,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=960, Invalid=5046, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 07:35:16,277 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 419 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 434 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:16,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 572 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1850 Invalid, 0 Unknown, 434 Unchecked, 0.8s Time] [2022-01-18 07:35:16,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9040 states. [2022-01-18 07:35:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9040 to 4724. [2022-01-18 07:35:16,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4724 states, 4723 states have (on average 3.6351894982002966) internal successors, (17169), 4723 states have internal predecessors, (17169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4724 states to 4724 states and 17169 transitions. [2022-01-18 07:35:16,381 INFO L78 Accepts]: Start accepts. Automaton has 4724 states and 17169 transitions. Word has length 26 [2022-01-18 07:35:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:16,381 INFO L470 AbstractCegarLoop]: Abstraction has 4724 states and 17169 transitions. [2022-01-18 07:35:16,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4724 states and 17169 transitions. [2022-01-18 07:35:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:16,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:16,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:16,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-01-18 07:35:16,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-01-18 07:35:16,589 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:16,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash 191428704, now seen corresponding path program 61 times [2022-01-18 07:35:16,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:16,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007081677] [2022-01-18 07:35:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:16,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:16,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:16,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007081677] [2022-01-18 07:35:16,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007081677] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:16,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680760517] [2022-01-18 07:35:16,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:35:16,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:16,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:16,735 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:16,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 07:35:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:16,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:16,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:16,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:16,969 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:16,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2022-01-18 07:35:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:17,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:17,279 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:17,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:35:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:18,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680760517] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:18,190 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:18,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-01-18 07:35:18,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281482680] [2022-01-18 07:35:18,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:18,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:35:18,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:18,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:35:18,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:35:18,190 INFO L87 Difference]: Start difference. First operand 4724 states and 17169 transitions. Second operand has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:20,843 INFO L93 Difference]: Finished difference Result 8456 states and 28732 transitions. [2022-01-18 07:35:20,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 07:35:20,844 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:20,861 INFO L225 Difference]: With dead ends: 8456 [2022-01-18 07:35:20,862 INFO L226 Difference]: Without dead ends: 8380 [2022-01-18 07:35:20,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=876, Invalid=3816, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 07:35:20,862 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 356 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:20,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 389 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 893 Invalid, 0 Unknown, 393 Unchecked, 0.4s Time] [2022-01-18 07:35:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8380 states. [2022-01-18 07:35:20,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8380 to 4717. [2022-01-18 07:35:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4717 states, 4716 states have (on average 3.639100932994063) internal successors, (17162), 4716 states have internal predecessors, (17162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4717 states to 4717 states and 17162 transitions. [2022-01-18 07:35:20,970 INFO L78 Accepts]: Start accepts. Automaton has 4717 states and 17162 transitions. Word has length 26 [2022-01-18 07:35:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:20,970 INFO L470 AbstractCegarLoop]: Abstraction has 4717 states and 17162 transitions. [2022-01-18 07:35:20,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 4717 states and 17162 transitions. [2022-01-18 07:35:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:20,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:20,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:21,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-01-18 07:35:21,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:21,194 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1205769994, now seen corresponding path program 56 times [2022-01-18 07:35:21,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:21,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584907638] [2022-01-18 07:35:21,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:21,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:21,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:21,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584907638] [2022-01-18 07:35:21,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584907638] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:21,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578028667] [2022-01-18 07:35:21,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:35:21,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:21,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:21,330 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:21,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 07:35:21,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:35:21,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:21,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:21,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:21,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:21,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:21,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-01-18 07:35:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:21,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:21,765 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:35:21,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:35:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:21,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578028667] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:21,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:21,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2022-01-18 07:35:21,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759291370] [2022-01-18 07:35:21,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:21,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:35:21,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:21,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:35:21,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:35:21,913 INFO L87 Difference]: Start difference. First operand 4717 states and 17162 transitions. Second operand has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:24,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:24,583 INFO L93 Difference]: Finished difference Result 7064 states and 24569 transitions. [2022-01-18 07:35:24,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 07:35:24,584 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:24,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:24,599 INFO L225 Difference]: With dead ends: 7064 [2022-01-18 07:35:24,599 INFO L226 Difference]: Without dead ends: 7006 [2022-01-18 07:35:24,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2200 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1100, Invalid=5872, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 07:35:24,600 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 253 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:24,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 538 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:35:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7006 states. [2022-01-18 07:35:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7006 to 4725. [2022-01-18 07:35:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4725 states, 4724 states have (on average 3.63653683319221) internal successors, (17179), 4724 states have internal predecessors, (17179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:24,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 17179 transitions. [2022-01-18 07:35:24,700 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 17179 transitions. Word has length 26 [2022-01-18 07:35:24,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:24,700 INFO L470 AbstractCegarLoop]: Abstraction has 4725 states and 17179 transitions. [2022-01-18 07:35:24,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 17179 transitions. [2022-01-18 07:35:24,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:24,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:24,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:24,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-01-18 07:35:24,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:24,908 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:24,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:24,908 INFO L85 PathProgramCache]: Analyzing trace with hash -280276128, now seen corresponding path program 57 times [2022-01-18 07:35:24,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:24,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127470519] [2022-01-18 07:35:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:24,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:25,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:25,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127470519] [2022-01-18 07:35:25,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127470519] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:25,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274871308] [2022-01-18 07:35:25,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:35:25,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:25,072 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:25,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 07:35:25,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:35:25,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:25,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:35:25,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:25,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:25,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:25,279 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:25,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 39 [2022-01-18 07:35:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:25,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:25,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:25,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:25,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:25,463 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:25,463 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:35:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:25,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274871308] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:25,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:25,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:35:25,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71504540] [2022-01-18 07:35:25,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:25,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:35:25,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:35:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:35:25,553 INFO L87 Difference]: Start difference. First operand 4725 states and 17179 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:26,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:26,212 INFO L93 Difference]: Finished difference Result 6033 states and 21472 transitions. [2022-01-18 07:35:26,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:35:26,212 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:26,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:26,224 INFO L225 Difference]: With dead ends: 6033 [2022-01-18 07:35:26,224 INFO L226 Difference]: Without dead ends: 5981 [2022-01-18 07:35:26,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 07:35:26,225 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 182 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:26,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 457 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 496 Invalid, 0 Unknown, 153 Unchecked, 0.2s Time] [2022-01-18 07:35:26,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5981 states. [2022-01-18 07:35:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5981 to 4778. [2022-01-18 07:35:26,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 4777 states have (on average 3.633661293698974) internal successors, (17358), 4777 states have internal predecessors, (17358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 17358 transitions. [2022-01-18 07:35:26,307 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 17358 transitions. Word has length 26 [2022-01-18 07:35:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:26,307 INFO L470 AbstractCegarLoop]: Abstraction has 4778 states and 17358 transitions. [2022-01-18 07:35:26,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 17358 transitions. [2022-01-18 07:35:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:26,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:26,315 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:26,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-01-18 07:35:26,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-01-18 07:35:26,515 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1193941528, now seen corresponding path program 58 times [2022-01-18 07:35:26,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387231851] [2022-01-18 07:35:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:26,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:26,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:26,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387231851] [2022-01-18 07:35:26,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387231851] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:26,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983996650] [2022-01-18 07:35:26,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:35:26,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:26,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:26,657 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:26,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 07:35:26,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:35:26,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:26,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:35:26,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:26,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:26,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:26,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:26,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 21 [2022-01-18 07:35:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:26,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:27,079 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:35:27,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:35:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:27,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983996650] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:27,239 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:27,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2022-01-18 07:35:27,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418895015] [2022-01-18 07:35:27,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:27,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:35:27,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:27,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:35:27,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:35:27,240 INFO L87 Difference]: Start difference. First operand 4778 states and 17358 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:31,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:31,281 INFO L93 Difference]: Finished difference Result 8015 states and 27403 transitions. [2022-01-18 07:35:31,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 07:35:31,281 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:31,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:31,319 INFO L225 Difference]: With dead ends: 8015 [2022-01-18 07:35:31,319 INFO L226 Difference]: Without dead ends: 7890 [2022-01-18 07:35:31,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4229 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1865, Invalid=10345, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 07:35:31,319 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 294 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:31,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 529 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2268 Invalid, 0 Unknown, 104 Unchecked, 0.9s Time] [2022-01-18 07:35:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7890 states. [2022-01-18 07:35:31,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7890 to 4841. [2022-01-18 07:35:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4841 states, 4840 states have (on average 3.628512396694215) internal successors, (17562), 4840 states have internal predecessors, (17562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4841 states to 4841 states and 17562 transitions. [2022-01-18 07:35:31,409 INFO L78 Accepts]: Start accepts. Automaton has 4841 states and 17562 transitions. Word has length 26 [2022-01-18 07:35:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:31,409 INFO L470 AbstractCegarLoop]: Abstraction has 4841 states and 17562 transitions. [2022-01-18 07:35:31,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4841 states and 17562 transitions. [2022-01-18 07:35:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:31,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:31,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:31,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-01-18 07:35:31,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:31,619 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash 375467984, now seen corresponding path program 59 times [2022-01-18 07:35:31,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:31,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174278421] [2022-01-18 07:35:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:31,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:31,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:31,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174278421] [2022-01-18 07:35:31,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174278421] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:31,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377691524] [2022-01-18 07:35:31,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:35:31,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:31,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:31,759 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:31,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 07:35:31,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:35:31,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:31,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:31,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:31,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:31,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:31,968 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:31,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2022-01-18 07:35:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:32,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:32,146 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:32,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:32,147 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:32,156 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:32,157 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:35:32,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:32,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377691524] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:32,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:32,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:35:32,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577311120] [2022-01-18 07:35:32,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:32,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:35:32,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:32,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:35:32,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:35:32,248 INFO L87 Difference]: Start difference. First operand 4841 states and 17562 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:33,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:33,928 INFO L93 Difference]: Finished difference Result 7445 states and 25744 transitions. [2022-01-18 07:35:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:35:33,928 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:33,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:33,944 INFO L225 Difference]: With dead ends: 7445 [2022-01-18 07:35:33,944 INFO L226 Difference]: Without dead ends: 7389 [2022-01-18 07:35:33,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=830, Invalid=3202, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 07:35:33,944 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 385 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:33,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 385 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1127 Invalid, 0 Unknown, 125 Unchecked, 0.5s Time] [2022-01-18 07:35:33,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7389 states. [2022-01-18 07:35:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7389 to 4897. [2022-01-18 07:35:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4897 states, 4896 states have (on average 3.631331699346405) internal successors, (17779), 4896 states have internal predecessors, (17779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4897 states to 4897 states and 17779 transitions. [2022-01-18 07:35:34,044 INFO L78 Accepts]: Start accepts. Automaton has 4897 states and 17779 transitions. Word has length 26 [2022-01-18 07:35:34,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:34,044 INFO L470 AbstractCegarLoop]: Abstraction has 4897 states and 17779 transitions. [2022-01-18 07:35:34,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4897 states and 17779 transitions. [2022-01-18 07:35:34,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:34,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:34,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:34,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-01-18 07:35:34,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:34,252 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1074760440, now seen corresponding path program 62 times [2022-01-18 07:35:34,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:34,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288203064] [2022-01-18 07:35:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:34,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:34,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:34,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288203064] [2022-01-18 07:35:34,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288203064] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:34,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989765247] [2022-01-18 07:35:34,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:35:34,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:34,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:34,380 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:34,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 07:35:34,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:35:34,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:34,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:34,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:34,631 INFO L353 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2022-01-18 07:35:34,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 60 [2022-01-18 07:35:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:34,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:34,864 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:35:34,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 21 treesize of output 56 [2022-01-18 07:35:34,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:34,971 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:34,982 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:34,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:35:35,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:35,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989765247] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:35,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:35,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2022-01-18 07:35:35,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914926132] [2022-01-18 07:35:35,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:35,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 07:35:35,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:35,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 07:35:35,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:35:35,199 INFO L87 Difference]: Start difference. First operand 4897 states and 17779 transitions. Second operand has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:37,747 INFO L93 Difference]: Finished difference Result 8749 states and 29823 transitions. [2022-01-18 07:35:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 07:35:37,747 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:37,765 INFO L225 Difference]: With dead ends: 8749 [2022-01-18 07:35:37,766 INFO L226 Difference]: Without dead ends: 8719 [2022-01-18 07:35:37,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=728, Invalid=4822, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 07:35:37,766 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 320 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 2021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:37,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 429 Invalid, 2021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:35:37,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8719 states. [2022-01-18 07:35:37,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8719 to 4931. [2022-01-18 07:35:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4931 states, 4930 states have (on average 3.6253549695740364) internal successors, (17873), 4930 states have internal predecessors, (17873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4931 states to 4931 states and 17873 transitions. [2022-01-18 07:35:37,885 INFO L78 Accepts]: Start accepts. Automaton has 4931 states and 17873 transitions. Word has length 26 [2022-01-18 07:35:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:37,885 INFO L470 AbstractCegarLoop]: Abstraction has 4931 states and 17873 transitions. [2022-01-18 07:35:37,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.44) internal successors, (61), 25 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4931 states and 17873 transitions. [2022-01-18 07:35:37,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:37,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:37,893 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:37,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-01-18 07:35:38,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-01-18 07:35:38,093 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:38,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:38,094 INFO L85 PathProgramCache]: Analyzing trace with hash -87268828, now seen corresponding path program 63 times [2022-01-18 07:35:38,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:38,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58764441] [2022-01-18 07:35:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:38,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:38,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:38,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58764441] [2022-01-18 07:35:38,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58764441] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:38,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073941625] [2022-01-18 07:35:38,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:35:38,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:38,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:38,232 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:38,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-18 07:35:38,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:35:38,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:38,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:38,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:38,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:38,483 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:38,483 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-01-18 07:35:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:38,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:38,775 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:38,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:35:39,670 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:39,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073941625] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:39,670 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:39,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:35:39,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637524357] [2022-01-18 07:35:39,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:39,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:35:39,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:39,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:35:39,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:35:39,671 INFO L87 Difference]: Start difference. First operand 4931 states and 17873 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:41,807 INFO L93 Difference]: Finished difference Result 8474 states and 28894 transitions. [2022-01-18 07:35:41,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:35:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:41,825 INFO L225 Difference]: With dead ends: 8474 [2022-01-18 07:35:41,826 INFO L226 Difference]: Without dead ends: 8409 [2022-01-18 07:35:41,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=622, Invalid=3160, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 07:35:41,826 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 265 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:41,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 288 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 585 Invalid, 0 Unknown, 519 Unchecked, 0.3s Time] [2022-01-18 07:35:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8409 states. [2022-01-18 07:35:41,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8409 to 4961. [2022-01-18 07:35:41,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4961 states, 4960 states have (on average 3.627016129032258) internal successors, (17990), 4960 states have internal predecessors, (17990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4961 states to 4961 states and 17990 transitions. [2022-01-18 07:35:41,946 INFO L78 Accepts]: Start accepts. Automaton has 4961 states and 17990 transitions. Word has length 26 [2022-01-18 07:35:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:41,946 INFO L470 AbstractCegarLoop]: Abstraction has 4961 states and 17990 transitions. [2022-01-18 07:35:41,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4961 states and 17990 transitions. [2022-01-18 07:35:41,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:41,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:41,954 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:41,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-01-18 07:35:42,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:42,156 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1872123044, now seen corresponding path program 64 times [2022-01-18 07:35:42,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:42,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039397280] [2022-01-18 07:35:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:42,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:42,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:42,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039397280] [2022-01-18 07:35:42,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039397280] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:42,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305842253] [2022-01-18 07:35:42,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:35:42,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:42,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:42,271 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:42,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-18 07:35:42,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:35:42,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:42,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:42,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:42,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:42,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:42,533 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2022-01-18 07:35:42,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:42,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:42,712 INFO L353 Elim1Store]: treesize reduction 10, result has 81.8 percent of original size [2022-01-18 07:35:42,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 20 treesize of output 55 [2022-01-18 07:35:42,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:42,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:42,857 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:42,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:35:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:43,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305842253] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:43,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:43,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-01-18 07:35:43,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334713785] [2022-01-18 07:35:43,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:43,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:35:43,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:35:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:35:43,050 INFO L87 Difference]: Start difference. First operand 4961 states and 17990 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:43,785 INFO L93 Difference]: Finished difference Result 7140 states and 24665 transitions. [2022-01-18 07:35:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 07:35:43,786 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:43,799 INFO L225 Difference]: With dead ends: 7140 [2022-01-18 07:35:43,799 INFO L226 Difference]: Without dead ends: 7125 [2022-01-18 07:35:43,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1051, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 07:35:43,800 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 157 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:43,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 328 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 744 Invalid, 0 Unknown, 38 Unchecked, 0.3s Time] [2022-01-18 07:35:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7125 states. [2022-01-18 07:35:43,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7125 to 4993. [2022-01-18 07:35:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4993 states, 4992 states have (on average 3.6235977564102564) internal successors, (18089), 4992 states have internal predecessors, (18089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4993 states to 4993 states and 18089 transitions. [2022-01-18 07:35:43,902 INFO L78 Accepts]: Start accepts. Automaton has 4993 states and 18089 transitions. Word has length 26 [2022-01-18 07:35:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:43,902 INFO L470 AbstractCegarLoop]: Abstraction has 4993 states and 18089 transitions. [2022-01-18 07:35:43,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 4993 states and 18089 transitions. [2022-01-18 07:35:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:43,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:43,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:43,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2022-01-18 07:35:44,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-01-18 07:35:44,110 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:44,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:44,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1446158772, now seen corresponding path program 65 times [2022-01-18 07:35:44,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:44,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353837495] [2022-01-18 07:35:44,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:44,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:44,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:44,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353837495] [2022-01-18 07:35:44,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353837495] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:44,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536121586] [2022-01-18 07:35:44,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:35:44,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:44,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:44,240 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:44,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-18 07:35:44,260 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:35:44,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:44,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 07:35:44,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:44,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:44,540 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:44,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 30 [2022-01-18 07:35:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:44,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:44,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:44,767 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:44,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 20 treesize of output 55 [2022-01-18 07:35:44,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:44,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:44,917 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:44,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:35:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:45,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536121586] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:45,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:45,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 26 [2022-01-18 07:35:45,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162521211] [2022-01-18 07:35:45,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:45,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 07:35:45,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:45,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 07:35:45,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:35:45,164 INFO L87 Difference]: Start difference. First operand 4993 states and 18089 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:50,457 INFO L93 Difference]: Finished difference Result 16309 states and 54529 transitions. [2022-01-18 07:35:50,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-01-18 07:35:50,458 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:50,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:50,496 INFO L225 Difference]: With dead ends: 16309 [2022-01-18 07:35:50,496 INFO L226 Difference]: Without dead ends: 16252 [2022-01-18 07:35:50,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 39 SyntacticMatches, 17 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5007 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2099, Invalid=10333, Unknown=0, NotChecked=0, Total=12432 [2022-01-18 07:35:50,497 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 399 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 746 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:50,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 551 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 960 Invalid, 0 Unknown, 746 Unchecked, 0.5s Time] [2022-01-18 07:35:50,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16252 states. [2022-01-18 07:35:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16252 to 5011. [2022-01-18 07:35:50,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5011 states, 5010 states have (on average 3.625748502994012) internal successors, (18165), 5010 states have internal predecessors, (18165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5011 states to 5011 states and 18165 transitions. [2022-01-18 07:35:50,690 INFO L78 Accepts]: Start accepts. Automaton has 5011 states and 18165 transitions. Word has length 26 [2022-01-18 07:35:50,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:50,690 INFO L470 AbstractCegarLoop]: Abstraction has 5011 states and 18165 transitions. [2022-01-18 07:35:50,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 5011 states and 18165 transitions. [2022-01-18 07:35:50,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:50,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:50,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:50,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-01-18 07:35:50,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-01-18 07:35:50,899 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:50,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:50,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1897695392, now seen corresponding path program 66 times [2022-01-18 07:35:50,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:50,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40265376] [2022-01-18 07:35:50,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:50,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:51,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:51,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40265376] [2022-01-18 07:35:51,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40265376] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:51,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505495665] [2022-01-18 07:35:51,042 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:35:51,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:51,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:51,043 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:51,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-18 07:35:51,063 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:35:51,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:35:51,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:35:51,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:51,304 INFO L353 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-01-18 07:35:51,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 62 [2022-01-18 07:35:51,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:51,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:51,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:51,994 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:52,004 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:52,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 55 [2022-01-18 07:35:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:52,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505495665] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:52,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:52,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 07:35:52,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899319725] [2022-01-18 07:35:52,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:52,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:35:52,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:52,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:35:52,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:35:52,334 INFO L87 Difference]: Start difference. First operand 5011 states and 18165 transitions. Second operand has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:58,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:35:58,248 INFO L93 Difference]: Finished difference Result 9967 states and 34044 transitions. [2022-01-18 07:35:58,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 07:35:58,248 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:35:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:35:58,268 INFO L225 Difference]: With dead ends: 9967 [2022-01-18 07:35:58,268 INFO L226 Difference]: Without dead ends: 9952 [2022-01-18 07:35:58,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 42 SyntacticMatches, 15 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7109 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2176, Invalid=14854, Unknown=0, NotChecked=0, Total=17030 [2022-01-18 07:35:58,269 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 479 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1303 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:35:58,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 528 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1157 Invalid, 0 Unknown, 1303 Unchecked, 0.6s Time] [2022-01-18 07:35:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9952 states. [2022-01-18 07:35:58,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9952 to 5037. [2022-01-18 07:35:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5037 states, 5036 states have (on average 3.631254964257347) internal successors, (18287), 5036 states have internal predecessors, (18287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5037 states to 5037 states and 18287 transitions. [2022-01-18 07:35:58,387 INFO L78 Accepts]: Start accepts. Automaton has 5037 states and 18287 transitions. Word has length 26 [2022-01-18 07:35:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:35:58,387 INFO L470 AbstractCegarLoop]: Abstraction has 5037 states and 18287 transitions. [2022-01-18 07:35:58,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 27 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:35:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 5037 states and 18287 transitions. [2022-01-18 07:35:58,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:35:58,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:35:58,396 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:35:58,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2022-01-18 07:35:58,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-01-18 07:35:58,597 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:35:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:35:58,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1713979010, now seen corresponding path program 67 times [2022-01-18 07:35:58,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:35:58,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92031679] [2022-01-18 07:35:58,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:35:58,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:35:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:58,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:35:58,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92031679] [2022-01-18 07:35:58,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92031679] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:35:58,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308838550] [2022-01-18 07:35:58,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:35:58,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:35:58,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:35:58,733 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:35:58,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-18 07:35:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:35:58,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 07:35:58,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:35:58,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:35:58,985 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:58,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2022-01-18 07:35:59,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:59,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:35:59,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:59,194 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:59,194 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 20 treesize of output 55 [2022-01-18 07:35:59,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:59,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:35:59,357 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:35:59,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 47 [2022-01-18 07:35:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:35:59,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308838550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:35:59,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:35:59,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:35:59,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855303321] [2022-01-18 07:35:59,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:35:59,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:35:59,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:35:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:35:59,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:35:59,615 INFO L87 Difference]: Start difference. First operand 5037 states and 18287 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:01,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:01,806 INFO L93 Difference]: Finished difference Result 8705 states and 29599 transitions. [2022-01-18 07:36:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 07:36:01,807 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:36:01,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:01,825 INFO L225 Difference]: With dead ends: 8705 [2022-01-18 07:36:01,825 INFO L226 Difference]: Without dead ends: 8645 [2022-01-18 07:36:01,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=585, Invalid=2721, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 07:36:01,826 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 275 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 2058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 450 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:01,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 458 Invalid, 2058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1560 Invalid, 0 Unknown, 450 Unchecked, 0.7s Time] [2022-01-18 07:36:01,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8645 states. [2022-01-18 07:36:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8645 to 5078. [2022-01-18 07:36:01,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5078 states, 5077 states have (on average 3.629899546976561) internal successors, (18429), 5077 states have internal predecessors, (18429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:01,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 18429 transitions. [2022-01-18 07:36:01,950 INFO L78 Accepts]: Start accepts. Automaton has 5078 states and 18429 transitions. Word has length 26 [2022-01-18 07:36:01,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:01,950 INFO L470 AbstractCegarLoop]: Abstraction has 5078 states and 18429 transitions. [2022-01-18 07:36:01,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:01,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5078 states and 18429 transitions. [2022-01-18 07:36:01,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:36:01,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:01,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:01,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-01-18 07:36:02,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:02,174 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:02,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash -756469736, now seen corresponding path program 60 times [2022-01-18 07:36:02,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:02,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878174441] [2022-01-18 07:36:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:02,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:02,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:02,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878174441] [2022-01-18 07:36:02,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878174441] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:02,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018137883] [2022-01-18 07:36:02,351 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:36:02,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:02,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:02,351 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:02,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-18 07:36:02,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:36:02,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:02,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:36:02,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:02,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:36:02,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:36:02,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:36:02,606 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:36:02,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 48 [2022-01-18 07:36:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:02,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:02,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:36:02,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:36:02,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:36:02,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:36:02,806 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 41 [2022-01-18 07:36:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:02,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018137883] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:02,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:02,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-01-18 07:36:02,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922873746] [2022-01-18 07:36:02,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:02,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 07:36:02,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:02,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 07:36:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:36:02,900 INFO L87 Difference]: Start difference. First operand 5078 states and 18429 transitions. Second operand has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:03,623 INFO L93 Difference]: Finished difference Result 5510 states and 19667 transitions. [2022-01-18 07:36:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 07:36:03,624 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:36:03,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:03,635 INFO L225 Difference]: With dead ends: 5510 [2022-01-18 07:36:03,635 INFO L226 Difference]: Without dead ends: 5480 [2022-01-18 07:36:03,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=460, Invalid=2402, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 07:36:03,636 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 151 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 236 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:03,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 312 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 307 Invalid, 0 Unknown, 236 Unchecked, 0.1s Time] [2022-01-18 07:36:03,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2022-01-18 07:36:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 5104. [2022-01-18 07:36:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 3.6304134822653342) internal successors, (18526), 5103 states have internal predecessors, (18526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 18526 transitions. [2022-01-18 07:36:03,746 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 18526 transitions. Word has length 26 [2022-01-18 07:36:03,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:03,746 INFO L470 AbstractCegarLoop]: Abstraction has 5104 states and 18526 transitions. [2022-01-18 07:36:03,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.4444444444444446) internal successors, (66), 26 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 18526 transitions. [2022-01-18 07:36:03,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:36:03,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:03,755 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:03,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-01-18 07:36:03,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:03,966 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:03,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:03,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1678171876, now seen corresponding path program 61 times [2022-01-18 07:36:03,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:03,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032987940] [2022-01-18 07:36:03,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:03,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:04,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:04,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032987940] [2022-01-18 07:36:04,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032987940] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:04,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593748126] [2022-01-18 07:36:04,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:36:04,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:04,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:04,149 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:04,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-18 07:36:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:04,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 07:36:04,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:04,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:36:04,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:36:04,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:36:04,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:36:04,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2022-01-18 07:36:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:04,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:04,558 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:36:04,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:36:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:04,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593748126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:04,853 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:04,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2022-01-18 07:36:04,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779887611] [2022-01-18 07:36:04,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:04,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:36:04,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:04,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:36:04,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:36:04,854 INFO L87 Difference]: Start difference. First operand 5104 states and 18526 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:05,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:05,935 INFO L93 Difference]: Finished difference Result 6841 states and 24155 transitions. [2022-01-18 07:36:05,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 07:36:05,936 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:36:05,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:05,973 INFO L225 Difference]: With dead ends: 6841 [2022-01-18 07:36:05,973 INFO L226 Difference]: Without dead ends: 6811 [2022-01-18 07:36:05,974 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=389, Invalid=2367, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 07:36:05,974 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 144 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:05,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 441 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 982 Invalid, 0 Unknown, 218 Unchecked, 0.4s Time] [2022-01-18 07:36:05,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2022-01-18 07:36:06,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 5092. [2022-01-18 07:36:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5092 states, 5091 states have (on average 3.6311137301119625) internal successors, (18486), 5091 states have internal predecessors, (18486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5092 states to 5092 states and 18486 transitions. [2022-01-18 07:36:06,069 INFO L78 Accepts]: Start accepts. Automaton has 5092 states and 18486 transitions. Word has length 26 [2022-01-18 07:36:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:06,069 INFO L470 AbstractCegarLoop]: Abstraction has 5092 states and 18486 transitions. [2022-01-18 07:36:06,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5092 states and 18486 transitions. [2022-01-18 07:36:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:36:06,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:06,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:06,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-01-18 07:36:06,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-01-18 07:36:06,279 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:06,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:06,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1326090780, now seen corresponding path program 62 times [2022-01-18 07:36:06,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:06,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468425595] [2022-01-18 07:36:06,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:06,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:06,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:06,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:06,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468425595] [2022-01-18 07:36:06,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468425595] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:06,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851651636] [2022-01-18 07:36:06,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:36:06,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:06,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:06,430 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:06,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-18 07:36:06,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:36:06,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:06,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:36:06,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:06,687 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:36:06,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:36:06,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:36:06,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 07:36:06,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-01-18 07:36:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:06,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:06,847 INFO L353 Elim1Store]: treesize reduction 24, result has 60.7 percent of original size [2022-01-18 07:36:06,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22 treesize of output 47 [2022-01-18 07:36:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:07,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851651636] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:07,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:07,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2022-01-18 07:36:07,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945423347] [2022-01-18 07:36:07,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:07,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:36:07,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:36:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:36:07,193 INFO L87 Difference]: Start difference. First operand 5092 states and 18486 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:09,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:09,309 INFO L93 Difference]: Finished difference Result 7334 states and 25843 transitions. [2022-01-18 07:36:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 07:36:09,310 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:36:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:09,325 INFO L225 Difference]: With dead ends: 7334 [2022-01-18 07:36:09,325 INFO L226 Difference]: Without dead ends: 7319 [2022-01-18 07:36:09,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=650, Invalid=3010, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:36:09,326 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 221 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 392 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:09,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 389 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1144 Invalid, 0 Unknown, 392 Unchecked, 0.5s Time] [2022-01-18 07:36:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7319 states. [2022-01-18 07:36:09,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7319 to 5037. [2022-01-18 07:36:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5037 states, 5036 states have (on average 3.6280778395552025) internal successors, (18271), 5036 states have internal predecessors, (18271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:09,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5037 states to 5037 states and 18271 transitions. [2022-01-18 07:36:09,426 INFO L78 Accepts]: Start accepts. Automaton has 5037 states and 18271 transitions. Word has length 26 [2022-01-18 07:36:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:09,427 INFO L470 AbstractCegarLoop]: Abstraction has 5037 states and 18271 transitions. [2022-01-18 07:36:09,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:09,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5037 states and 18271 transitions. [2022-01-18 07:36:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 07:36:09,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:09,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:09,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-01-18 07:36:09,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable130 [2022-01-18 07:36:09,636 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash 856703750, now seen corresponding path program 68 times [2022-01-18 07:36:09,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:09,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581460259] [2022-01-18 07:36:09,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:09,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:09,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:09,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:09,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581460259] [2022-01-18 07:36:09,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581460259] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:09,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52273494] [2022-01-18 07:36:09,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:36:09,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:09,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:09,776 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:09,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-18 07:36:09,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:36:09,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:09,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 07:36:09,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:10,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 07:36:10,042 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:36:10,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 32 [2022-01-18 07:36:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:10,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:10,366 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 07:36:10,366 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 70 [2022-01-18 07:36:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:11,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52273494] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:11,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:11,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-01-18 07:36:11,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765681349] [2022-01-18 07:36:11,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:11,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-18 07:36:11,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-18 07:36:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:36:11,192 INFO L87 Difference]: Start difference. First operand 5037 states and 18271 transitions. Second operand has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:14,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:14,357 INFO L93 Difference]: Finished difference Result 11364 states and 38156 transitions. [2022-01-18 07:36:14,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 07:36:14,357 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 07:36:14,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:14,410 INFO L225 Difference]: With dead ends: 11364 [2022-01-18 07:36:14,410 INFO L226 Difference]: Without dead ends: 11271 [2022-01-18 07:36:14,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 35 SyntacticMatches, 5 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1888 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=835, Invalid=4715, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 07:36:14,410 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 266 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 528 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:14,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 434 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 711 Invalid, 0 Unknown, 528 Unchecked, 0.4s Time] [2022-01-18 07:36:14,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11271 states. [2022-01-18 07:36:14,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11271 to 5009. [2022-01-18 07:36:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5009 states, 5008 states have (on average 3.626597444089457) internal successors, (18162), 5008 states have internal predecessors, (18162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:14,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5009 states to 5009 states and 18162 transitions. [2022-01-18 07:36:14,531 INFO L78 Accepts]: Start accepts. Automaton has 5009 states and 18162 transitions. Word has length 26 [2022-01-18 07:36:14,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:14,531 INFO L470 AbstractCegarLoop]: Abstraction has 5009 states and 18162 transitions. [2022-01-18 07:36:14,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 24 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 5009 states and 18162 transitions. [2022-01-18 07:36:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:14,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:14,540 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:14,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-01-18 07:36:14,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:14,755 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:14,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1754023866, now seen corresponding path program 69 times [2022-01-18 07:36:14,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:14,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666438776] [2022-01-18 07:36:14,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:14,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:14,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:14,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666438776] [2022-01-18 07:36:14,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666438776] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:14,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943716082] [2022-01-18 07:36:14,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:36:14,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:14,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:14,799 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:14,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-18 07:36:14,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:36:14,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:14,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:14,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:14,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:15,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943716082] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:15,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:15,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 07:36:15,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066379978] [2022-01-18 07:36:15,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:15,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:36:15,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:15,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:36:15,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:36:15,033 INFO L87 Difference]: Start difference. First operand 5009 states and 18162 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:17,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:17,650 INFO L93 Difference]: Finished difference Result 12590 states and 40846 transitions. [2022-01-18 07:36:17,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-18 07:36:17,650 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:17,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:17,675 INFO L225 Difference]: With dead ends: 12590 [2022-01-18 07:36:17,675 INFO L226 Difference]: Without dead ends: 12590 [2022-01-18 07:36:17,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11198 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4782, Invalid=21300, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 07:36:17,677 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 718 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:17,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [718 Valid, 673 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:36:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12590 states. [2022-01-18 07:36:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12590 to 5439. [2022-01-18 07:36:17,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5439 states, 5438 states have (on average 3.690327326222876) internal successors, (20068), 5438 states have internal predecessors, (20068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:17,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5439 states to 5439 states and 20068 transitions. [2022-01-18 07:36:17,828 INFO L78 Accepts]: Start accepts. Automaton has 5439 states and 20068 transitions. Word has length 28 [2022-01-18 07:36:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:17,828 INFO L470 AbstractCegarLoop]: Abstraction has 5439 states and 20068 transitions. [2022-01-18 07:36:17,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 5439 states and 20068 transitions. [2022-01-18 07:36:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:17,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:17,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:17,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-01-18 07:36:18,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:18,037 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:18,038 INFO L85 PathProgramCache]: Analyzing trace with hash 777705022, now seen corresponding path program 70 times [2022-01-18 07:36:18,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:18,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149547267] [2022-01-18 07:36:18,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:18,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:18,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:18,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149547267] [2022-01-18 07:36:18,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149547267] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:18,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44727043] [2022-01-18 07:36:18,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:36:18,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:18,078 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:18,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-18 07:36:18,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:36:18,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:18,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:18,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:18,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:18,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44727043] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:18,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:18,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:36:18,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689954100] [2022-01-18 07:36:18,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:18,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:36:18,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:18,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:36:18,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:36:18,327 INFO L87 Difference]: Start difference. First operand 5439 states and 20068 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:23,637 INFO L93 Difference]: Finished difference Result 16901 states and 54084 transitions. [2022-01-18 07:36:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2022-01-18 07:36:23,638 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:23,674 INFO L225 Difference]: With dead ends: 16901 [2022-01-18 07:36:23,674 INFO L226 Difference]: Without dead ends: 16901 [2022-01-18 07:36:23,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33756 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=12551, Invalid=62251, Unknown=0, NotChecked=0, Total=74802 [2022-01-18 07:36:23,679 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 965 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:23,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 886 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 07:36:23,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16901 states. [2022-01-18 07:36:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16901 to 5488. [2022-01-18 07:36:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5488 states, 5487 states have (on average 3.7020229633679604) internal successors, (20313), 5487 states have internal predecessors, (20313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:23,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5488 states to 5488 states and 20313 transitions. [2022-01-18 07:36:23,902 INFO L78 Accepts]: Start accepts. Automaton has 5488 states and 20313 transitions. Word has length 28 [2022-01-18 07:36:23,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:23,902 INFO L470 AbstractCegarLoop]: Abstraction has 5488 states and 20313 transitions. [2022-01-18 07:36:23,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:23,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5488 states and 20313 transitions. [2022-01-18 07:36:23,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:23,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:23,911 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:23,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-01-18 07:36:24,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-01-18 07:36:24,112 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1344657102, now seen corresponding path program 71 times [2022-01-18 07:36:24,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:24,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180100381] [2022-01-18 07:36:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:24,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:24,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:24,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:24,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180100381] [2022-01-18 07:36:24,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180100381] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:24,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739659046] [2022-01-18 07:36:24,152 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:36:24,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:24,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:24,153 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:24,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-18 07:36:24,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:36:24,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:24,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:24,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:24,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:24,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739659046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:24,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:24,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2022-01-18 07:36:24,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989709502] [2022-01-18 07:36:24,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:24,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 07:36:24,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:24,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 07:36:24,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:36:24,407 INFO L87 Difference]: Start difference. First operand 5488 states and 20313 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:27,957 INFO L93 Difference]: Finished difference Result 15449 states and 49832 transitions. [2022-01-18 07:36:27,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2022-01-18 07:36:27,958 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:27,993 INFO L225 Difference]: With dead ends: 15449 [2022-01-18 07:36:27,993 INFO L226 Difference]: Without dead ends: 15449 [2022-01-18 07:36:27,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16369 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=6947, Invalid=30495, Unknown=0, NotChecked=0, Total=37442 [2022-01-18 07:36:27,995 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 862 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 2482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:27,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 817 Invalid, 2482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 07:36:28,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15449 states. [2022-01-18 07:36:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15449 to 5354. [2022-01-18 07:36:28,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5354 states, 5353 states have (on average 3.6775639828133757) internal successors, (19686), 5353 states have internal predecessors, (19686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:28,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5354 states to 5354 states and 19686 transitions. [2022-01-18 07:36:28,185 INFO L78 Accepts]: Start accepts. Automaton has 5354 states and 19686 transitions. Word has length 28 [2022-01-18 07:36:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:28,185 INFO L470 AbstractCegarLoop]: Abstraction has 5354 states and 19686 transitions. [2022-01-18 07:36:28,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:28,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5354 states and 19686 transitions. [2022-01-18 07:36:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:28,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:28,194 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:28,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Ended with exit code 0 [2022-01-18 07:36:28,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-01-18 07:36:28,395 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:28,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1768281872, now seen corresponding path program 72 times [2022-01-18 07:36:28,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:28,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776572110] [2022-01-18 07:36:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:28,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:28,434 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:28,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:28,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776572110] [2022-01-18 07:36:28,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776572110] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:28,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734443153] [2022-01-18 07:36:28,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:36:28,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:28,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:28,436 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:28,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-18 07:36:28,456 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:36:28,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:28,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:28,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:28,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:28,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734443153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:28,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:28,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-01-18 07:36:28,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624584504] [2022-01-18 07:36:28,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:28,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:36:28,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:28,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:36:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:36:28,671 INFO L87 Difference]: Start difference. First operand 5354 states and 19686 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:31,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:31,269 INFO L93 Difference]: Finished difference Result 12555 states and 40750 transitions. [2022-01-18 07:36:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-01-18 07:36:31,269 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:31,299 INFO L225 Difference]: With dead ends: 12555 [2022-01-18 07:36:31,299 INFO L226 Difference]: Without dead ends: 12555 [2022-01-18 07:36:31,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10124 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4362, Invalid=20444, Unknown=0, NotChecked=0, Total=24806 [2022-01-18 07:36:31,302 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 648 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:31,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 694 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:36:31,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12555 states. [2022-01-18 07:36:31,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12555 to 5328. [2022-01-18 07:36:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 5327 states have (on average 3.672423502909705) internal successors, (19563), 5327 states have internal predecessors, (19563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 19563 transitions. [2022-01-18 07:36:31,478 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 19563 transitions. Word has length 28 [2022-01-18 07:36:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:31,478 INFO L470 AbstractCegarLoop]: Abstraction has 5328 states and 19563 transitions. [2022-01-18 07:36:31,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 19563 transitions. [2022-01-18 07:36:31,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:31,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:31,487 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:31,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-01-18 07:36:31,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-01-18 07:36:31,688 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1317055158, now seen corresponding path program 63 times [2022-01-18 07:36:31,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:31,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724002144] [2022-01-18 07:36:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:31,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:31,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:31,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:31,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724002144] [2022-01-18 07:36:31,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724002144] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:31,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165255069] [2022-01-18 07:36:31,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:36:31,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:31,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:31,730 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:31,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-18 07:36:31,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:36:31,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:31,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:31,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:31,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:31,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165255069] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:31,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:31,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-01-18 07:36:31,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247623566] [2022-01-18 07:36:31,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:31,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:36:31,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:31,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:36:31,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:36:31,939 INFO L87 Difference]: Start difference. First operand 5328 states and 19563 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:33,323 INFO L93 Difference]: Finished difference Result 11126 states and 36778 transitions. [2022-01-18 07:36:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 07:36:33,323 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:33,348 INFO L225 Difference]: With dead ends: 11126 [2022-01-18 07:36:33,348 INFO L226 Difference]: Without dead ends: 11126 [2022-01-18 07:36:33,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2962 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1577, Invalid=6795, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 07:36:33,349 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 490 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:33,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 517 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:36:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11126 states. [2022-01-18 07:36:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11126 to 5378. [2022-01-18 07:36:33,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 3.6656127952389808) internal successors, (19710), 5377 states have internal predecessors, (19710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 19710 transitions. [2022-01-18 07:36:33,506 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 19710 transitions. Word has length 28 [2022-01-18 07:36:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:33,506 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 19710 transitions. [2022-01-18 07:36:33,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 19 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 19710 transitions. [2022-01-18 07:36:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:33,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:33,515 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:33,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-01-18 07:36:33,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-18 07:36:33,715 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:33,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:33,716 INFO L85 PathProgramCache]: Analyzing trace with hash 738717818, now seen corresponding path program 73 times [2022-01-18 07:36:33,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:33,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89406157] [2022-01-18 07:36:33,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:33,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:33,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:33,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89406157] [2022-01-18 07:36:33,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89406157] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:33,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515547650] [2022-01-18 07:36:33,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:36:33,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:33,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:33,751 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:33,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-18 07:36:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:33,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:36:33,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:33,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:33,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:33,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515547650] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:33,942 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:33,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 07:36:33,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165113543] [2022-01-18 07:36:33,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:33,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:36:33,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:33,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:36:33,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:36:33,943 INFO L87 Difference]: Start difference. First operand 5378 states and 19710 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:35,453 INFO L93 Difference]: Finished difference Result 12267 states and 41359 transitions. [2022-01-18 07:36:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-18 07:36:35,454 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:35,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:35,479 INFO L225 Difference]: With dead ends: 12267 [2022-01-18 07:36:35,480 INFO L226 Difference]: Without dead ends: 12203 [2022-01-18 07:36:35,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4599 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2755, Invalid=8801, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 07:36:35,480 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 660 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:35,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 270 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:36:35,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12203 states. [2022-01-18 07:36:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12203 to 6423. [2022-01-18 07:36:35,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 6422 states have (on average 3.7877608221737775) internal successors, (24325), 6422 states have internal predecessors, (24325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 24325 transitions. [2022-01-18 07:36:35,661 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 24325 transitions. Word has length 28 [2022-01-18 07:36:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:35,661 INFO L470 AbstractCegarLoop]: Abstraction has 6423 states and 24325 transitions. [2022-01-18 07:36:35,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 24325 transitions. [2022-01-18 07:36:35,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:35,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:35,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:35,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-01-18 07:36:35,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:35,873 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:35,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1738509770, now seen corresponding path program 74 times [2022-01-18 07:36:35,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:35,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795912929] [2022-01-18 07:36:35,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:35,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:35,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:35,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:35,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795912929] [2022-01-18 07:36:35,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795912929] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:35,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286901456] [2022-01-18 07:36:35,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:36:35,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:35,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:35,903 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:35,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-18 07:36:35,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:36:35,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:35,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:36:35,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:35,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:36,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286901456] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:36,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:36,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-18 07:36:36,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004953314] [2022-01-18 07:36:36,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:36,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:36:36,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:36,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:36:36,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:36:36,061 INFO L87 Difference]: Start difference. First operand 6423 states and 24325 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:36,284 INFO L93 Difference]: Finished difference Result 8764 states and 31163 transitions. [2022-01-18 07:36:36,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 07:36:36,284 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:36,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:36,303 INFO L225 Difference]: With dead ends: 8764 [2022-01-18 07:36:36,303 INFO L226 Difference]: Without dead ends: 8669 [2022-01-18 07:36:36,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:36:36,304 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 205 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:36,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 75 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:36:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2022-01-18 07:36:36,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 6429. [2022-01-18 07:36:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6429 states, 6428 states have (on average 3.7762912258867454) internal successors, (24274), 6428 states have internal predecessors, (24274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6429 states to 6429 states and 24274 transitions. [2022-01-18 07:36:36,439 INFO L78 Accepts]: Start accepts. Automaton has 6429 states and 24274 transitions. Word has length 28 [2022-01-18 07:36:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:36,439 INFO L470 AbstractCegarLoop]: Abstraction has 6429 states and 24274 transitions. [2022-01-18 07:36:36,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 6429 states and 24274 transitions. [2022-01-18 07:36:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:36,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:36,452 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:36,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-01-18 07:36:36,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-01-18 07:36:36,652 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1718584438, now seen corresponding path program 64 times [2022-01-18 07:36:36,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:36,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102227211] [2022-01-18 07:36:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:36,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:36,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102227211] [2022-01-18 07:36:36,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102227211] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:36,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147811326] [2022-01-18 07:36:36,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:36:36,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:36,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:36,691 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:36,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-18 07:36:36,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:36:36,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:36,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:36,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:36,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:36,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147811326] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:36,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:36,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 07:36:36,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009957643] [2022-01-18 07:36:36,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:36,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:36:36,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:36:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:36:36,888 INFO L87 Difference]: Start difference. First operand 6429 states and 24274 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:37,472 INFO L93 Difference]: Finished difference Result 10862 states and 39021 transitions. [2022-01-18 07:36:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 07:36:37,472 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:37,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:37,498 INFO L225 Difference]: With dead ends: 10862 [2022-01-18 07:36:37,498 INFO L226 Difference]: Without dead ends: 10728 [2022-01-18 07:36:37,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 07:36:37,499 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 376 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:37,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 210 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:36:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10728 states. [2022-01-18 07:36:37,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10728 to 7624. [2022-01-18 07:36:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7624 states, 7623 states have (on average 3.8049324412960774) internal successors, (29005), 7623 states have internal predecessors, (29005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7624 states to 7624 states and 29005 transitions. [2022-01-18 07:36:37,684 INFO L78 Accepts]: Start accepts. Automaton has 7624 states and 29005 transitions. Word has length 28 [2022-01-18 07:36:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:37,684 INFO L470 AbstractCegarLoop]: Abstraction has 7624 states and 29005 transitions. [2022-01-18 07:36:37,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7624 states and 29005 transitions. [2022-01-18 07:36:37,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:37,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:37,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:37,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-01-18 07:36:37,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-01-18 07:36:37,898 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:37,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2020160002, now seen corresponding path program 75 times [2022-01-18 07:36:37,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:37,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902881325] [2022-01-18 07:36:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:37,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:37,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:37,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902881325] [2022-01-18 07:36:37,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902881325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:37,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190745746] [2022-01-18 07:36:37,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:36:37,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:37,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:37,933 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:37,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-18 07:36:37,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:36:37,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:37,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:36:37,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:38,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:38,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190745746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:38,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:38,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 07:36:38,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224961475] [2022-01-18 07:36:38,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:38,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:36:38,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:38,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:36:38,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:36:38,149 INFO L87 Difference]: Start difference. First operand 7624 states and 29005 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:39,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:39,716 INFO L93 Difference]: Finished difference Result 13035 states and 44313 transitions. [2022-01-18 07:36:39,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 07:36:39,717 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:39,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:39,743 INFO L225 Difference]: With dead ends: 13035 [2022-01-18 07:36:39,743 INFO L226 Difference]: Without dead ends: 12994 [2022-01-18 07:36:39,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3972 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2636, Invalid=7870, Unknown=0, NotChecked=0, Total=10506 [2022-01-18 07:36:39,744 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 802 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:39,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 300 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:36:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12994 states. [2022-01-18 07:36:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12994 to 7678. [2022-01-18 07:36:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7678 states, 7677 states have (on average 3.8047414354565587) internal successors, (29209), 7677 states have internal predecessors, (29209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7678 states to 7678 states and 29209 transitions. [2022-01-18 07:36:39,940 INFO L78 Accepts]: Start accepts. Automaton has 7678 states and 29209 transitions. Word has length 28 [2022-01-18 07:36:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:39,940 INFO L470 AbstractCegarLoop]: Abstraction has 7678 states and 29209 transitions. [2022-01-18 07:36:39,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7678 states and 29209 transitions. [2022-01-18 07:36:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:39,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:39,956 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:39,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Ended with exit code 0 [2022-01-18 07:36:40,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:40,163 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:40,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:40,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1347747220, now seen corresponding path program 76 times [2022-01-18 07:36:40,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:40,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034724144] [2022-01-18 07:36:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:40,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:40,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:40,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034724144] [2022-01-18 07:36:40,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034724144] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:40,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901514680] [2022-01-18 07:36:40,210 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:36:40,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:40,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:40,211 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:40,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-18 07:36:40,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:36:40,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:40,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:36:40,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:40,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:40,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901514680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:40,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:40,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 07:36:40,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236875437] [2022-01-18 07:36:40,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:40,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:36:40,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:40,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:36:40,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:36:40,421 INFO L87 Difference]: Start difference. First operand 7678 states and 29209 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:41,580 INFO L93 Difference]: Finished difference Result 11800 states and 40768 transitions. [2022-01-18 07:36:41,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 07:36:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:41,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:41,608 INFO L225 Difference]: With dead ends: 11800 [2022-01-18 07:36:41,608 INFO L226 Difference]: Without dead ends: 11751 [2022-01-18 07:36:41,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2669 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2030, Invalid=5110, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 07:36:41,609 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 536 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:41,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 245 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 928 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:36:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11751 states. [2022-01-18 07:36:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11751 to 7653. [2022-01-18 07:36:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7653 states, 7652 states have (on average 3.8080240460010453) internal successors, (29139), 7652 states have internal predecessors, (29139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7653 states to 7653 states and 29139 transitions. [2022-01-18 07:36:41,832 INFO L78 Accepts]: Start accepts. Automaton has 7653 states and 29139 transitions. Word has length 28 [2022-01-18 07:36:41,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:41,833 INFO L470 AbstractCegarLoop]: Abstraction has 7653 states and 29139 transitions. [2022-01-18 07:36:41,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 7653 states and 29139 transitions. [2022-01-18 07:36:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:41,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:41,847 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:41,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-01-18 07:36:42,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:42,047 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1898421154, now seen corresponding path program 77 times [2022-01-18 07:36:42,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:42,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459453415] [2022-01-18 07:36:42,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:42,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:42,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:42,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459453415] [2022-01-18 07:36:42,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459453415] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:42,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112703927] [2022-01-18 07:36:42,081 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:36:42,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:42,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:42,082 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:42,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-18 07:36:42,101 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:36:42,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:42,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:36:42,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:42,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:42,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112703927] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:42,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:42,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-01-18 07:36:42,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326765168] [2022-01-18 07:36:42,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:42,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:36:42,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:42,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:36:42,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:36:42,248 INFO L87 Difference]: Start difference. First operand 7653 states and 29139 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:43,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:43,471 INFO L93 Difference]: Finished difference Result 17070 states and 57452 transitions. [2022-01-18 07:36:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 07:36:43,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:43,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:43,514 INFO L225 Difference]: With dead ends: 17070 [2022-01-18 07:36:43,514 INFO L226 Difference]: Without dead ends: 16937 [2022-01-18 07:36:43,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1663, Invalid=5647, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 07:36:43,515 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 555 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:43,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 240 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:36:43,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16937 states. [2022-01-18 07:36:43,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16937 to 7913. [2022-01-18 07:36:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7913 states, 7912 states have (on average 3.8351870576339735) internal successors, (30344), 7912 states have internal predecessors, (30344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7913 states to 7913 states and 30344 transitions. [2022-01-18 07:36:43,860 INFO L78 Accepts]: Start accepts. Automaton has 7913 states and 30344 transitions. Word has length 28 [2022-01-18 07:36:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:43,860 INFO L470 AbstractCegarLoop]: Abstraction has 7913 states and 30344 transitions. [2022-01-18 07:36:43,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 7913 states and 30344 transitions. [2022-01-18 07:36:43,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:43,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:43,876 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:43,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Forceful destruction successful, exit code 0 [2022-01-18 07:36:44,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:44,076 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1701976484, now seen corresponding path program 78 times [2022-01-18 07:36:44,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:44,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093559580] [2022-01-18 07:36:44,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:44,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:36:44,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:44,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093559580] [2022-01-18 07:36:44,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093559580] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:44,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628543165] [2022-01-18 07:36:44,101 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:36:44,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:44,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:44,102 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:44,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-18 07:36:44,122 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:36:44,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:44,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:36:44,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:36:44,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:36:44,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628543165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:44,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:44,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2022-01-18 07:36:44,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791346170] [2022-01-18 07:36:44,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:44,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:36:44,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:36:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:36:44,274 INFO L87 Difference]: Start difference. First operand 7913 states and 30344 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:44,681 INFO L93 Difference]: Finished difference Result 13951 states and 48563 transitions. [2022-01-18 07:36:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:36:44,681 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:44,715 INFO L225 Difference]: With dead ends: 13951 [2022-01-18 07:36:44,715 INFO L226 Difference]: Without dead ends: 13951 [2022-01-18 07:36:44,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=464, Invalid=868, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:36:44,715 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 389 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:44,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 95 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:36:44,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13951 states. [2022-01-18 07:36:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13951 to 7621. [2022-01-18 07:36:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7621 states, 7620 states have (on average 3.812729658792651) internal successors, (29053), 7620 states have internal predecessors, (29053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7621 states to 7621 states and 29053 transitions. [2022-01-18 07:36:44,919 INFO L78 Accepts]: Start accepts. Automaton has 7621 states and 29053 transitions. Word has length 28 [2022-01-18 07:36:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:44,919 INFO L470 AbstractCegarLoop]: Abstraction has 7621 states and 29053 transitions. [2022-01-18 07:36:44,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 7621 states and 29053 transitions. [2022-01-18 07:36:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:44,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:44,933 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:44,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Forceful destruction successful, exit code 0 [2022-01-18 07:36:45,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2022-01-18 07:36:45,133 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:45,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1659448956, now seen corresponding path program 79 times [2022-01-18 07:36:45,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:45,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203122136] [2022-01-18 07:36:45,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:45,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:45,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:45,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203122136] [2022-01-18 07:36:45,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203122136] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:45,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602611684] [2022-01-18 07:36:45,169 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:36:45,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:45,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:45,170 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:45,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-18 07:36:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:45,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:45,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:45,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:45,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602611684] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:45,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:45,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-01-18 07:36:45,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005234228] [2022-01-18 07:36:45,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:45,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:36:45,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:36:45,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:36:45,355 INFO L87 Difference]: Start difference. First operand 7621 states and 29053 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:46,551 INFO L93 Difference]: Finished difference Result 16836 states and 57663 transitions. [2022-01-18 07:36:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 07:36:46,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:46,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:46,591 INFO L225 Difference]: With dead ends: 16836 [2022-01-18 07:36:46,591 INFO L226 Difference]: Without dead ends: 16836 [2022-01-18 07:36:46,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3066 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1779, Invalid=6231, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 07:36:46,592 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 450 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:46,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 373 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:36:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16836 states. [2022-01-18 07:36:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16836 to 7737. [2022-01-18 07:36:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7737 states, 7736 states have (on average 3.8187693898655635) internal successors, (29542), 7736 states have internal predecessors, (29542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7737 states to 7737 states and 29542 transitions. [2022-01-18 07:36:46,841 INFO L78 Accepts]: Start accepts. Automaton has 7737 states and 29542 transitions. Word has length 28 [2022-01-18 07:36:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:46,841 INFO L470 AbstractCegarLoop]: Abstraction has 7737 states and 29542 transitions. [2022-01-18 07:36:46,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:46,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7737 states and 29542 transitions. [2022-01-18 07:36:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:46,854 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:46,855 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:46,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Forceful destruction successful, exit code 0 [2022-01-18 07:36:47,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2022-01-18 07:36:47,055 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:47,055 INFO L85 PathProgramCache]: Analyzing trace with hash -874534862, now seen corresponding path program 80 times [2022-01-18 07:36:47,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:47,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782835210] [2022-01-18 07:36:47,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:47,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:47,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:47,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782835210] [2022-01-18 07:36:47,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782835210] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:47,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516289806] [2022-01-18 07:36:47,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:36:47,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:47,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:47,091 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:47,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-18 07:36:47,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:36:47,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:47,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:47,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:47,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:47,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516289806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:47,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:47,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-01-18 07:36:47,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948468577] [2022-01-18 07:36:47,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:47,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:36:47,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:36:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:36:47,275 INFO L87 Difference]: Start difference. First operand 7737 states and 29542 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:48,499 INFO L93 Difference]: Finished difference Result 16876 states and 58103 transitions. [2022-01-18 07:36:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 07:36:48,499 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:48,541 INFO L225 Difference]: With dead ends: 16876 [2022-01-18 07:36:48,541 INFO L226 Difference]: Without dead ends: 16876 [2022-01-18 07:36:48,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2780 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1581, Invalid=5901, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 07:36:48,541 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 431 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:48,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 421 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:36:48,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16876 states. [2022-01-18 07:36:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16876 to 7869. [2022-01-18 07:36:48,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7869 states, 7868 states have (on average 3.8093543467208946) internal successors, (29972), 7868 states have internal predecessors, (29972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7869 states to 7869 states and 29972 transitions. [2022-01-18 07:36:48,808 INFO L78 Accepts]: Start accepts. Automaton has 7869 states and 29972 transitions. Word has length 28 [2022-01-18 07:36:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:48,808 INFO L470 AbstractCegarLoop]: Abstraction has 7869 states and 29972 transitions. [2022-01-18 07:36:48,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7869 states and 29972 transitions. [2022-01-18 07:36:48,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:48,823 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:48,823 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:48,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Forceful destruction successful, exit code 0 [2022-01-18 07:36:49,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-01-18 07:36:49,023 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:49,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:49,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1957557518, now seen corresponding path program 81 times [2022-01-18 07:36:49,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:49,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024415219] [2022-01-18 07:36:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:49,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:49,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:49,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024415219] [2022-01-18 07:36:49,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024415219] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270210121] [2022-01-18 07:36:49,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:36:49,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:49,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:49,057 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:49,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-18 07:36:49,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:36:49,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:49,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:36:49,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:49,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:49,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270210121] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:49,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:49,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-01-18 07:36:49,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062924838] [2022-01-18 07:36:49,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:49,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:36:49,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:49,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:36:49,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:36:49,223 INFO L87 Difference]: Start difference. First operand 7869 states and 29972 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:50,457 INFO L93 Difference]: Finished difference Result 19414 states and 65266 transitions. [2022-01-18 07:36:50,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 07:36:50,457 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:50,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:50,506 INFO L225 Difference]: With dead ends: 19414 [2022-01-18 07:36:50,506 INFO L226 Difference]: Without dead ends: 19369 [2022-01-18 07:36:50,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3061 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1800, Invalid=5856, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 07:36:50,507 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 631 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:50,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 246 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:36:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19369 states. [2022-01-18 07:36:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19369 to 9274. [2022-01-18 07:36:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9274 states, 9273 states have (on average 3.850749487760164) internal successors, (35708), 9273 states have internal predecessors, (35708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:50,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9274 states to 9274 states and 35708 transitions. [2022-01-18 07:36:50,868 INFO L78 Accepts]: Start accepts. Automaton has 9274 states and 35708 transitions. Word has length 28 [2022-01-18 07:36:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:50,868 INFO L470 AbstractCegarLoop]: Abstraction has 9274 states and 35708 transitions. [2022-01-18 07:36:50,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 9274 states and 35708 transitions. [2022-01-18 07:36:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:50,885 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:50,885 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:50,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Forceful destruction successful, exit code 0 [2022-01-18 07:36:51,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:51,086 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:51,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash -486479400, now seen corresponding path program 82 times [2022-01-18 07:36:51,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:51,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170275186] [2022-01-18 07:36:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:51,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:51,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:51,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170275186] [2022-01-18 07:36:51,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170275186] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:51,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318844663] [2022-01-18 07:36:51,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:36:51,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:51,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:51,120 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:51,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-18 07:36:51,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:36:51,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:51,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:36:51,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:51,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:51,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318844663] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:51,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:51,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-01-18 07:36:51,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577000870] [2022-01-18 07:36:51,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:51,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:36:51,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:51,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:36:51,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:36:51,286 INFO L87 Difference]: Start difference. First operand 9274 states and 35708 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:52,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:52,486 INFO L93 Difference]: Finished difference Result 19985 states and 66983 transitions. [2022-01-18 07:36:52,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 07:36:52,486 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:52,536 INFO L225 Difference]: With dead ends: 19985 [2022-01-18 07:36:52,536 INFO L226 Difference]: Without dead ends: 19985 [2022-01-18 07:36:52,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1800, Invalid=5856, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 07:36:52,537 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 635 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:52,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 285 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:36:52,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19985 states. [2022-01-18 07:36:52,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19985 to 9062. [2022-01-18 07:36:52,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9062 states, 9061 states have (on average 3.8345657212228232) internal successors, (34745), 9061 states have internal predecessors, (34745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9062 states to 9062 states and 34745 transitions. [2022-01-18 07:36:52,885 INFO L78 Accepts]: Start accepts. Automaton has 9062 states and 34745 transitions. Word has length 28 [2022-01-18 07:36:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:52,885 INFO L470 AbstractCegarLoop]: Abstraction has 9062 states and 34745 transitions. [2022-01-18 07:36:52,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:52,885 INFO L276 IsEmpty]: Start isEmpty. Operand 9062 states and 34745 transitions. [2022-01-18 07:36:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:52,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:52,901 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:52,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Ended with exit code 0 [2022-01-18 07:36:53,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-18 07:36:53,101 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:53,102 INFO L85 PathProgramCache]: Analyzing trace with hash -919356004, now seen corresponding path program 83 times [2022-01-18 07:36:53,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:53,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192122565] [2022-01-18 07:36:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:53,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:53,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:53,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192122565] [2022-01-18 07:36:53,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192122565] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:53,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313840775] [2022-01-18 07:36:53,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:36:53,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:53,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:53,137 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:53,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-18 07:36:53,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:36:53,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:53,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:53,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:53,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:53,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313840775] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:53,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:53,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-01-18 07:36:53,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850033203] [2022-01-18 07:36:53,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:53,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:36:53,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:36:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:36:53,315 INFO L87 Difference]: Start difference. First operand 9062 states and 34745 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:54,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:54,415 INFO L93 Difference]: Finished difference Result 17840 states and 62687 transitions. [2022-01-18 07:36:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 07:36:54,415 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:54,470 INFO L225 Difference]: With dead ends: 17840 [2022-01-18 07:36:54,471 INFO L226 Difference]: Without dead ends: 17836 [2022-01-18 07:36:54,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1477, Invalid=5003, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 07:36:54,472 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 599 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:54,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 268 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:36:54,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17836 states. [2022-01-18 07:36:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17836 to 8772. [2022-01-18 07:36:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8772 states, 8771 states have (on average 3.851100216622962) internal successors, (33778), 8771 states have internal predecessors, (33778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8772 states to 8772 states and 33778 transitions. [2022-01-18 07:36:54,834 INFO L78 Accepts]: Start accepts. Automaton has 8772 states and 33778 transitions. Word has length 28 [2022-01-18 07:36:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:54,834 INFO L470 AbstractCegarLoop]: Abstraction has 8772 states and 33778 transitions. [2022-01-18 07:36:54,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:54,835 INFO L276 IsEmpty]: Start isEmpty. Operand 8772 states and 33778 transitions. [2022-01-18 07:36:54,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:54,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:54,852 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:54,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-01-18 07:36:55,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2022-01-18 07:36:55,060 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:55,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:55,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1191365194, now seen corresponding path program 84 times [2022-01-18 07:36:55,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:55,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706074648] [2022-01-18 07:36:55,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:55,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:55,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:55,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706074648] [2022-01-18 07:36:55,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706074648] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:55,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023476653] [2022-01-18 07:36:55,100 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:36:55,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:55,101 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:55,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-18 07:36:55,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:36:55,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:36:55,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:55,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:55,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:55,361 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:55,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023476653] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:55,361 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:55,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2022-01-18 07:36:55,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793883126] [2022-01-18 07:36:55,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:55,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:36:55,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:55,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:36:55,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:36:55,362 INFO L87 Difference]: Start difference. First operand 8772 states and 33778 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:36:58,736 INFO L93 Difference]: Finished difference Result 25466 states and 88615 transitions. [2022-01-18 07:36:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2022-01-18 07:36:58,736 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:36:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:36:58,811 INFO L225 Difference]: With dead ends: 25466 [2022-01-18 07:36:58,811 INFO L226 Difference]: Without dead ends: 25466 [2022-01-18 07:36:58,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20003 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=8056, Invalid=35000, Unknown=0, NotChecked=0, Total=43056 [2022-01-18 07:36:58,816 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 1027 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:36:58,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1027 Valid, 416 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1602 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:36:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25466 states. [2022-01-18 07:36:59,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25466 to 9231. [2022-01-18 07:36:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9231 states, 9230 states have (on average 3.9005417118093173) internal successors, (36002), 9230 states have internal predecessors, (36002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:59,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9231 states to 9231 states and 36002 transitions. [2022-01-18 07:36:59,255 INFO L78 Accepts]: Start accepts. Automaton has 9231 states and 36002 transitions. Word has length 28 [2022-01-18 07:36:59,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:36:59,256 INFO L470 AbstractCegarLoop]: Abstraction has 9231 states and 36002 transitions. [2022-01-18 07:36:59,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:36:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 9231 states and 36002 transitions. [2022-01-18 07:36:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:36:59,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:36:59,272 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:36:59,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Forceful destruction successful, exit code 0 [2022-01-18 07:36:59,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:59,473 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:36:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:36:59,473 INFO L85 PathProgramCache]: Analyzing trace with hash -624413114, now seen corresponding path program 85 times [2022-01-18 07:36:59,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:36:59,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630289760] [2022-01-18 07:36:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:36:59,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:36:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:59,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:36:59,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630289760] [2022-01-18 07:36:59,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630289760] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:36:59,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630481111] [2022-01-18 07:36:59,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:36:59,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:36:59,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:36:59,510 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:36:59,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-01-18 07:36:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:36:59,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:36:59,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:36:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:59,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:36:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:36:59,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630481111] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:36:59,750 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:36:59,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2022-01-18 07:36:59,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799675274] [2022-01-18 07:36:59,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:36:59,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:36:59,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:36:59,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:36:59,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:36:59,750 INFO L87 Difference]: Start difference. First operand 9231 states and 36002 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:02,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:02,374 INFO L93 Difference]: Finished difference Result 23850 states and 83310 transitions. [2022-01-18 07:37:02,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-01-18 07:37:02,374 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:02,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:02,439 INFO L225 Difference]: With dead ends: 23850 [2022-01-18 07:37:02,439 INFO L226 Difference]: Without dead ends: 23850 [2022-01-18 07:37:02,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11791 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5497, Invalid=20263, Unknown=0, NotChecked=0, Total=25760 [2022-01-18 07:37:02,440 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 826 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:02,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 524 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:37:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23850 states. [2022-01-18 07:37:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23850 to 9146. [2022-01-18 07:37:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9146 states, 9145 states have (on average 3.887916894477857) internal successors, (35555), 9145 states have internal predecessors, (35555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:02,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9146 states to 9146 states and 35555 transitions. [2022-01-18 07:37:02,829 INFO L78 Accepts]: Start accepts. Automaton has 9146 states and 35555 transitions. Word has length 28 [2022-01-18 07:37:02,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:02,829 INFO L470 AbstractCegarLoop]: Abstraction has 9146 states and 35555 transitions. [2022-01-18 07:37:02,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 9146 states and 35555 transitions. [2022-01-18 07:37:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:02,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:02,845 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:02,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-01-18 07:37:03,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable150 [2022-01-18 07:37:03,045 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1796758972, now seen corresponding path program 86 times [2022-01-18 07:37:03,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:03,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986089468] [2022-01-18 07:37:03,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:03,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:03,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986089468] [2022-01-18 07:37:03,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986089468] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292253237] [2022-01-18 07:37:03,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:37:03,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:03,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:03,080 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:03,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-01-18 07:37:03,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:37:03,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:03,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:03,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:03,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:03,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292253237] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:03,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:03,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2022-01-18 07:37:03,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291660777] [2022-01-18 07:37:03,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:03,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:37:03,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:37:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:37:03,282 INFO L87 Difference]: Start difference. First operand 9146 states and 35555 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:05,432 INFO L93 Difference]: Finished difference Result 22084 states and 75856 transitions. [2022-01-18 07:37:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-18 07:37:05,432 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:05,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:05,491 INFO L225 Difference]: With dead ends: 22084 [2022-01-18 07:37:05,491 INFO L226 Difference]: Without dead ends: 22084 [2022-01-18 07:37:05,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9684 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4569, Invalid=16893, Unknown=0, NotChecked=0, Total=21462 [2022-01-18 07:37:05,492 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 734 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:05,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 423 Invalid, 1557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:37:05,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22084 states. [2022-01-18 07:37:05,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22084 to 9204. [2022-01-18 07:37:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9204 states, 9203 states have (on average 3.8889492556774963) internal successors, (35790), 9203 states have internal predecessors, (35790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:05,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9204 states to 9204 states and 35790 transitions. [2022-01-18 07:37:05,876 INFO L78 Accepts]: Start accepts. Automaton has 9204 states and 35790 transitions. Word has length 28 [2022-01-18 07:37:05,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:05,876 INFO L470 AbstractCegarLoop]: Abstraction has 9204 states and 35790 transitions. [2022-01-18 07:37:05,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:05,876 INFO L276 IsEmpty]: Start isEmpty. Operand 9204 states and 35790 transitions. [2022-01-18 07:37:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:05,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:05,893 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:05,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Ended with exit code 0 [2022-01-18 07:37:06,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:06,093 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1715382884, now seen corresponding path program 87 times [2022-01-18 07:37:06,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:06,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780126173] [2022-01-18 07:37:06,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:06,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:06,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:06,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780126173] [2022-01-18 07:37:06,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780126173] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:06,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145039906] [2022-01-18 07:37:06,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:37:06,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:06,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:06,129 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:06,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-01-18 07:37:06,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 07:37:06,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:06,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:06,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:06,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:06,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145039906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:06,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:06,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 19 [2022-01-18 07:37:06,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387430440] [2022-01-18 07:37:06,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:06,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:37:06,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:06,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:37:06,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:37:06,331 INFO L87 Difference]: Start difference. First operand 9204 states and 35790 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:08,291 INFO L93 Difference]: Finished difference Result 21078 states and 73293 transitions. [2022-01-18 07:37:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-01-18 07:37:08,292 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:08,352 INFO L225 Difference]: With dead ends: 21078 [2022-01-18 07:37:08,353 INFO L226 Difference]: Without dead ends: 21070 [2022-01-18 07:37:08,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7026 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3686, Invalid=13084, Unknown=0, NotChecked=0, Total=16770 [2022-01-18 07:37:08,354 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 852 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:08,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 406 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:37:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21070 states. [2022-01-18 07:37:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21070 to 9024. [2022-01-18 07:37:08,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9024 states, 9023 states have (on average 3.874321179208689) internal successors, (34958), 9023 states have internal predecessors, (34958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9024 states to 9024 states and 34958 transitions. [2022-01-18 07:37:08,741 INFO L78 Accepts]: Start accepts. Automaton has 9024 states and 34958 transitions. Word has length 28 [2022-01-18 07:37:08,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:08,742 INFO L470 AbstractCegarLoop]: Abstraction has 9024 states and 34958 transitions. [2022-01-18 07:37:08,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9024 states and 34958 transitions. [2022-01-18 07:37:08,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:08,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:08,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:08,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-01-18 07:37:08,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:08,957 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash -784725668, now seen corresponding path program 88 times [2022-01-18 07:37:08,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:08,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854413281] [2022-01-18 07:37:08,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:08,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:08,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:08,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854413281] [2022-01-18 07:37:08,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854413281] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687577192] [2022-01-18 07:37:08,992 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:37:08,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:08,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:08,992 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:08,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-01-18 07:37:09,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:37:09,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:09,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:09,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:09,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:09,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687577192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:09,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:09,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2022-01-18 07:37:09,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901193702] [2022-01-18 07:37:09,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:09,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:37:09,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:09,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:37:09,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:37:09,212 INFO L87 Difference]: Start difference. First operand 9024 states and 34958 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:11,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:11,611 INFO L93 Difference]: Finished difference Result 20447 states and 70072 transitions. [2022-01-18 07:37:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-18 07:37:11,612 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:11,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:11,667 INFO L225 Difference]: With dead ends: 20447 [2022-01-18 07:37:11,667 INFO L226 Difference]: Without dead ends: 20447 [2022-01-18 07:37:11,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9264 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4648, Invalid=17108, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 07:37:11,670 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 914 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:11,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [914 Valid, 525 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:37:11,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20447 states. [2022-01-18 07:37:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20447 to 9040. [2022-01-18 07:37:12,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9040 states, 9039 states have (on average 3.8745436442084302) internal successors, (35022), 9039 states have internal predecessors, (35022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9040 states to 9040 states and 35022 transitions. [2022-01-18 07:37:12,047 INFO L78 Accepts]: Start accepts. Automaton has 9040 states and 35022 transitions. Word has length 28 [2022-01-18 07:37:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:12,047 INFO L470 AbstractCegarLoop]: Abstraction has 9040 states and 35022 transitions. [2022-01-18 07:37:12,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 9040 states and 35022 transitions. [2022-01-18 07:37:12,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:12,063 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:12,063 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:12,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2022-01-18 07:37:12,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:12,264 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:12,264 INFO L85 PathProgramCache]: Analyzing trace with hash 858313486, now seen corresponding path program 89 times [2022-01-18 07:37:12,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:12,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114518442] [2022-01-18 07:37:12,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:12,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:12,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:12,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114518442] [2022-01-18 07:37:12,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114518442] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:12,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598905132] [2022-01-18 07:37:12,299 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:37:12,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:12,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:12,300 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:12,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-01-18 07:37:12,320 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 07:37:12,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:12,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:12,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:12,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:12,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598905132] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:12,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:12,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2022-01-18 07:37:12,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210195652] [2022-01-18 07:37:12,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:12,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:37:12,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:12,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:37:12,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:37:12,520 INFO L87 Difference]: Start difference. First operand 9040 states and 35022 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:15,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:15,269 INFO L93 Difference]: Finished difference Result 19748 states and 69189 transitions. [2022-01-18 07:37:15,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-01-18 07:37:15,269 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:15,322 INFO L225 Difference]: With dead ends: 19748 [2022-01-18 07:37:15,323 INFO L226 Difference]: Without dead ends: 19740 [2022-01-18 07:37:15,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12753 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5782, Invalid=23974, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 07:37:15,326 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 775 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:15,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 524 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:37:15,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19740 states. [2022-01-18 07:37:15,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19740 to 8169. [2022-01-18 07:37:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8169 states, 8168 states have (on average 3.803501469147894) internal successors, (31067), 8168 states have internal predecessors, (31067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8169 states to 8169 states and 31067 transitions. [2022-01-18 07:37:15,698 INFO L78 Accepts]: Start accepts. Automaton has 8169 states and 31067 transitions. Word has length 28 [2022-01-18 07:37:15,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:15,698 INFO L470 AbstractCegarLoop]: Abstraction has 8169 states and 31067 transitions. [2022-01-18 07:37:15,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand 8169 states and 31067 transitions. [2022-01-18 07:37:15,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:15,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:15,712 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:15,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2022-01-18 07:37:15,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:15,913 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:15,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash 941717066, now seen corresponding path program 90 times [2022-01-18 07:37:15,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:15,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018063630] [2022-01-18 07:37:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:15,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:15,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:15,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018063630] [2022-01-18 07:37:15,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018063630] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:15,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176232933] [2022-01-18 07:37:15,949 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:37:15,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:15,950 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:15,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-01-18 07:37:15,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 07:37:15,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:15,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:15,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:16,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:16,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176232933] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:16,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:16,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-01-18 07:37:16,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109445004] [2022-01-18 07:37:16,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:16,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:37:16,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:37:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:37:16,157 INFO L87 Difference]: Start difference. First operand 8169 states and 31067 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:18,140 INFO L93 Difference]: Finished difference Result 17387 states and 58830 transitions. [2022-01-18 07:37:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 07:37:18,141 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:18,185 INFO L225 Difference]: With dead ends: 17387 [2022-01-18 07:37:18,186 INFO L226 Difference]: Without dead ends: 17387 [2022-01-18 07:37:18,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3292, Invalid=14264, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 07:37:18,188 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 600 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:18,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 498 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:37:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17387 states. [2022-01-18 07:37:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17387 to 8189. [2022-01-18 07:37:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8189 states, 8188 states have (on average 3.802027357107963) internal successors, (31131), 8188 states have internal predecessors, (31131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:18,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8189 states to 8189 states and 31131 transitions. [2022-01-18 07:37:18,486 INFO L78 Accepts]: Start accepts. Automaton has 8189 states and 31131 transitions. Word has length 28 [2022-01-18 07:37:18,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:18,486 INFO L470 AbstractCegarLoop]: Abstraction has 8189 states and 31131 transitions. [2022-01-18 07:37:18,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 8189 states and 31131 transitions. [2022-01-18 07:37:18,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:18,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:18,501 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:18,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-01-18 07:37:18,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:18,701 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:18,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:18,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1699890054, now seen corresponding path program 91 times [2022-01-18 07:37:18,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:18,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253574963] [2022-01-18 07:37:18,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:18,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:18,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:18,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253574963] [2022-01-18 07:37:18,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253574963] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:18,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493569588] [2022-01-18 07:37:18,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:37:18,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:18,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:18,739 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:18,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-01-18 07:37:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:18,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:18,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:18,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:18,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493569588] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:18,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:18,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:37:18,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286225920] [2022-01-18 07:37:18,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:18,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:37:18,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:18,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:37:18,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:37:18,971 INFO L87 Difference]: Start difference. First operand 8189 states and 31131 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:22,027 INFO L93 Difference]: Finished difference Result 18253 states and 61191 transitions. [2022-01-18 07:37:22,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-01-18 07:37:22,027 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:22,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:22,073 INFO L225 Difference]: With dead ends: 18253 [2022-01-18 07:37:22,073 INFO L226 Difference]: Without dead ends: 18253 [2022-01-18 07:37:22,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15900 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=5934, Invalid=30356, Unknown=0, NotChecked=0, Total=36290 [2022-01-18 07:37:22,077 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 811 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:22,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 615 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1853 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:37:22,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18253 states. [2022-01-18 07:37:22,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18253 to 8309. [2022-01-18 07:37:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8309 states, 8308 states have (on average 3.7930909966297546) internal successors, (31513), 8308 states have internal predecessors, (31513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8309 states to 8309 states and 31513 transitions. [2022-01-18 07:37:22,368 INFO L78 Accepts]: Start accepts. Automaton has 8309 states and 31513 transitions. Word has length 28 [2022-01-18 07:37:22,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:22,368 INFO L470 AbstractCegarLoop]: Abstraction has 8309 states and 31513 transitions. [2022-01-18 07:37:22,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:22,369 INFO L276 IsEmpty]: Start isEmpty. Operand 8309 states and 31513 transitions. [2022-01-18 07:37:22,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:22,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:22,383 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:22,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-01-18 07:37:22,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-01-18 07:37:22,584 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash -56850900, now seen corresponding path program 92 times [2022-01-18 07:37:22,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:22,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966672006] [2022-01-18 07:37:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:22,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:22,623 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:22,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:22,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966672006] [2022-01-18 07:37:22,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966672006] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:22,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840904264] [2022-01-18 07:37:22,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:37:22,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:22,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:22,624 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:22,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-01-18 07:37:22,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:37:22,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:22,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:22,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:22,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:22,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840904264] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:22,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:22,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:37:22,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315438783] [2022-01-18 07:37:22,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:22,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:37:22,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:22,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:37:22,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:37:22,849 INFO L87 Difference]: Start difference. First operand 8309 states and 31513 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:25,265 INFO L93 Difference]: Finished difference Result 16806 states and 57197 transitions. [2022-01-18 07:37:25,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-18 07:37:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:25,306 INFO L225 Difference]: With dead ends: 16806 [2022-01-18 07:37:25,306 INFO L226 Difference]: Without dead ends: 16798 [2022-01-18 07:37:25,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9327 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4289, Invalid=18361, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 07:37:25,307 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 658 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:25,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [658 Valid, 612 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:37:25,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16798 states. [2022-01-18 07:37:25,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16798 to 8235. [2022-01-18 07:37:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8235 states, 8234 states have (on average 3.7946320136021376) internal successors, (31245), 8234 states have internal predecessors, (31245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8235 states to 8235 states and 31245 transitions. [2022-01-18 07:37:25,586 INFO L78 Accepts]: Start accepts. Automaton has 8235 states and 31245 transitions. Word has length 28 [2022-01-18 07:37:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:25,586 INFO L470 AbstractCegarLoop]: Abstraction has 8235 states and 31245 transitions. [2022-01-18 07:37:25,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8235 states and 31245 transitions. [2022-01-18 07:37:25,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:25,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:25,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:25,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Ended with exit code 0 [2022-01-18 07:37:25,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-01-18 07:37:25,801 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:25,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash 522592324, now seen corresponding path program 65 times [2022-01-18 07:37:25,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:25,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535256739] [2022-01-18 07:37:25,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:25,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:25,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535256739] [2022-01-18 07:37:25,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535256739] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388187419] [2022-01-18 07:37:25,842 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:37:25,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:25,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:25,843 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:25,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-01-18 07:37:25,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:37:25,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:25,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:25,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:25,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:26,016 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:26,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388187419] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:26,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:26,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:37:26,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113246904] [2022-01-18 07:37:26,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:26,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:37:26,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:37:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:37:26,017 INFO L87 Difference]: Start difference. First operand 8235 states and 31245 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:27,072 INFO L93 Difference]: Finished difference Result 16714 states and 58049 transitions. [2022-01-18 07:37:27,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 07:37:27,072 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:27,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:27,112 INFO L225 Difference]: With dead ends: 16714 [2022-01-18 07:37:27,112 INFO L226 Difference]: Without dead ends: 16714 [2022-01-18 07:37:27,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2356 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1332, Invalid=5474, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 07:37:27,113 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 512 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:27,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 316 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:37:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16714 states. [2022-01-18 07:37:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16714 to 8257. [2022-01-18 07:37:27,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 8256 states have (on average 3.794089147286822) internal successors, (31324), 8256 states have internal predecessors, (31324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:27,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 31324 transitions. [2022-01-18 07:37:27,341 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 31324 transitions. Word has length 28 [2022-01-18 07:37:27,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:27,341 INFO L470 AbstractCegarLoop]: Abstraction has 8257 states and 31324 transitions. [2022-01-18 07:37:27,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 31324 transitions. [2022-01-18 07:37:27,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:27,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:27,356 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:27,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Forceful destruction successful, exit code 0 [2022-01-18 07:37:27,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-01-18 07:37:27,556 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:27,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:27,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1089207438, now seen corresponding path program 66 times [2022-01-18 07:37:27,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:27,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865603125] [2022-01-18 07:37:27,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:27,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:27,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:27,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865603125] [2022-01-18 07:37:27,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865603125] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:27,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513126217] [2022-01-18 07:37:27,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:37:27,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:27,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:27,602 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:27,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-01-18 07:37:27,622 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:37:27,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:27,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:27,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:27,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:27,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:27,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513126217] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:27,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:27,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:37:27,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320810029] [2022-01-18 07:37:27,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:27,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:37:27,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:27,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:37:27,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:37:27,776 INFO L87 Difference]: Start difference. First operand 8257 states and 31324 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:29,121 INFO L93 Difference]: Finished difference Result 17529 states and 60234 transitions. [2022-01-18 07:37:29,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-18 07:37:29,122 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:29,169 INFO L225 Difference]: With dead ends: 17529 [2022-01-18 07:37:29,169 INFO L226 Difference]: Without dead ends: 17529 [2022-01-18 07:37:29,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3262 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1763, Invalid=7167, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 07:37:29,170 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 460 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:29,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 458 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:37:29,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17529 states. [2022-01-18 07:37:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17529 to 8325. [2022-01-18 07:37:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8325 states, 8324 states have (on average 3.7873618452666986) internal successors, (31526), 8324 states have internal predecessors, (31526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8325 states to 8325 states and 31526 transitions. [2022-01-18 07:37:29,449 INFO L78 Accepts]: Start accepts. Automaton has 8325 states and 31526 transitions. Word has length 28 [2022-01-18 07:37:29,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:29,450 INFO L470 AbstractCegarLoop]: Abstraction has 8325 states and 31526 transitions. [2022-01-18 07:37:29,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:29,450 INFO L276 IsEmpty]: Start isEmpty. Operand 8325 states and 31526 transitions. [2022-01-18 07:37:29,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:29,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:29,465 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:29,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2022-01-18 07:37:29,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:29,665 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1320747086, now seen corresponding path program 67 times [2022-01-18 07:37:29,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658151052] [2022-01-18 07:37:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:29,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:29,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:29,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658151052] [2022-01-18 07:37:29,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658151052] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:29,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616202948] [2022-01-18 07:37:29,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:37:29,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:29,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:29,707 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:29,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-01-18 07:37:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:29,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:29,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:29,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:29,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616202948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:29,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:29,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:37:29,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046887453] [2022-01-18 07:37:29,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:29,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:37:29,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:29,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:37:29,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:37:29,881 INFO L87 Difference]: Start difference. First operand 8325 states and 31526 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:31,284 INFO L93 Difference]: Finished difference Result 17153 states and 59705 transitions. [2022-01-18 07:37:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 07:37:31,284 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:31,330 INFO L225 Difference]: With dead ends: 17153 [2022-01-18 07:37:31,330 INFO L226 Difference]: Without dead ends: 17153 [2022-01-18 07:37:31,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4063 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2029, Invalid=8683, Unknown=0, NotChecked=0, Total=10712 [2022-01-18 07:37:31,332 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 538 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:31,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 338 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:37:31,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17153 states. [2022-01-18 07:37:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17153 to 8623. [2022-01-18 07:37:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8623 states, 8622 states have (on average 3.772326606355834) internal successors, (32525), 8622 states have internal predecessors, (32525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8623 states to 8623 states and 32525 transitions. [2022-01-18 07:37:31,607 INFO L78 Accepts]: Start accepts. Automaton has 8623 states and 32525 transitions. Word has length 28 [2022-01-18 07:37:31,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:31,607 INFO L470 AbstractCegarLoop]: Abstraction has 8623 states and 32525 transitions. [2022-01-18 07:37:31,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:31,607 INFO L276 IsEmpty]: Start isEmpty. Operand 8623 states and 32525 transitions. [2022-01-18 07:37:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:31,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:31,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:31,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Forceful destruction successful, exit code 0 [2022-01-18 07:37:31,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:31,848 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:31,848 INFO L85 PathProgramCache]: Analyzing trace with hash -932691624, now seen corresponding path program 68 times [2022-01-18 07:37:31,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:31,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178835031] [2022-01-18 07:37:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:31,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:31,881 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:31,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:31,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178835031] [2022-01-18 07:37:31,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178835031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:31,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141450487] [2022-01-18 07:37:31,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:37:31,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:31,882 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:31,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-01-18 07:37:31,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:37:31,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:31,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:31,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:31,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:31,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:32,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141450487] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:32,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:32,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2022-01-18 07:37:32,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599793758] [2022-01-18 07:37:32,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:32,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:37:32,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:32,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:37:32,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:37:32,043 INFO L87 Difference]: Start difference. First operand 8623 states and 32525 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:32,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:32,560 INFO L93 Difference]: Finished difference Result 13956 states and 50746 transitions. [2022-01-18 07:37:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 07:37:32,560 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:32,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:32,594 INFO L225 Difference]: With dead ends: 13956 [2022-01-18 07:37:32,594 INFO L226 Difference]: Without dead ends: 13956 [2022-01-18 07:37:32,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=545, Invalid=1347, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 07:37:32,594 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 331 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:32,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 188 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:37:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13956 states. [2022-01-18 07:37:32,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13956 to 9846. [2022-01-18 07:37:32,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9846 states, 9845 states have (on average 3.8252920264093446) internal successors, (37660), 9845 states have internal predecessors, (37660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:32,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9846 states to 9846 states and 37660 transitions. [2022-01-18 07:37:32,816 INFO L78 Accepts]: Start accepts. Automaton has 9846 states and 37660 transitions. Word has length 28 [2022-01-18 07:37:32,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:32,816 INFO L470 AbstractCegarLoop]: Abstraction has 9846 states and 37660 transitions. [2022-01-18 07:37:32,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:32,816 INFO L276 IsEmpty]: Start isEmpty. Operand 9846 states and 37660 transitions. [2022-01-18 07:37:32,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:32,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:32,833 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:32,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Forceful destruction successful, exit code 0 [2022-01-18 07:37:33,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:33,033 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:33,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:33,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1365568228, now seen corresponding path program 69 times [2022-01-18 07:37:33,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:33,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403881988] [2022-01-18 07:37:33,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:33,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:33,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:33,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403881988] [2022-01-18 07:37:33,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403881988] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:33,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260231835] [2022-01-18 07:37:33,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:37:33,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:33,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:33,073 INFO L229 MonitoredProcess]: Starting monitored process 162 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:33,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Waiting until timeout for monitored process [2022-01-18 07:37:33,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 07:37:33,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:33,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:33,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:33,164 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:33,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:33,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260231835] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:33,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:33,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:37:33,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039967104] [2022-01-18 07:37:33,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:33,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:37:33,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:37:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:37:33,239 INFO L87 Difference]: Start difference. First operand 9846 states and 37660 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:34,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:34,404 INFO L93 Difference]: Finished difference Result 18161 states and 64894 transitions. [2022-01-18 07:37:34,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 07:37:34,405 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:34,453 INFO L225 Difference]: With dead ends: 18161 [2022-01-18 07:37:34,453 INFO L226 Difference]: Without dead ends: 18157 [2022-01-18 07:37:34,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2883 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1698, Invalid=6492, Unknown=0, NotChecked=0, Total=8190 [2022-01-18 07:37:34,454 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 485 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:34,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 293 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:37:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18157 states. [2022-01-18 07:37:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18157 to 9598. [2022-01-18 07:37:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9598 states, 9597 states have (on average 3.8386995936230073) internal successors, (36840), 9597 states have internal predecessors, (36840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9598 states to 9598 states and 36840 transitions. [2022-01-18 07:37:34,749 INFO L78 Accepts]: Start accepts. Automaton has 9598 states and 36840 transitions. Word has length 28 [2022-01-18 07:37:34,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:34,749 INFO L470 AbstractCegarLoop]: Abstraction has 9598 states and 36840 transitions. [2022-01-18 07:37:34,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:34,749 INFO L276 IsEmpty]: Start isEmpty. Operand 9598 states and 36840 transitions. [2022-01-18 07:37:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:34,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:34,767 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:34,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (162)] Ended with exit code 0 [2022-01-18 07:37:34,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,162 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:34,967 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:34,967 INFO L85 PathProgramCache]: Analyzing trace with hash 654689240, now seen corresponding path program 93 times [2022-01-18 07:37:34,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770112940] [2022-01-18 07:37:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:34,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:35,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:35,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770112940] [2022-01-18 07:37:35,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770112940] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:35,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507837192] [2022-01-18 07:37:35,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:37:35,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:35,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:35,006 INFO L229 MonitoredProcess]: Starting monitored process 163 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:35,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Waiting until timeout for monitored process [2022-01-18 07:37:35,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:37:35,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:35,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:37:35,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:35,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:35,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507837192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:35,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:35,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2022-01-18 07:37:35,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653212354] [2022-01-18 07:37:35,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:35,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:37:35,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:35,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:37:35,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:37:35,227 INFO L87 Difference]: Start difference. First operand 9598 states and 36840 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:36,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:36,425 INFO L93 Difference]: Finished difference Result 20165 states and 72760 transitions. [2022-01-18 07:37:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 07:37:36,425 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:36,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:36,484 INFO L225 Difference]: With dead ends: 20165 [2022-01-18 07:37:36,484 INFO L226 Difference]: Without dead ends: 20141 [2022-01-18 07:37:36,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1647, Invalid=3903, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 07:37:36,485 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 493 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:36,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 288 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:37:36,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20141 states. [2022-01-18 07:37:36,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20141 to 11719. [2022-01-18 07:37:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11719 states, 11718 states have (on average 3.9720942140296978) internal successors, (46545), 11718 states have internal predecessors, (46545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:36,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11719 states to 11719 states and 46545 transitions. [2022-01-18 07:37:36,887 INFO L78 Accepts]: Start accepts. Automaton has 11719 states and 46545 transitions. Word has length 28 [2022-01-18 07:37:36,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:36,887 INFO L470 AbstractCegarLoop]: Abstraction has 11719 states and 46545 transitions. [2022-01-18 07:37:36,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:36,887 INFO L276 IsEmpty]: Start isEmpty. Operand 11719 states and 46545 transitions. [2022-01-18 07:37:36,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:36,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:36,909 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:36,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (163)] Ended with exit code 0 [2022-01-18 07:37:37,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,163 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:37,109 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:37,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1598936656, now seen corresponding path program 94 times [2022-01-18 07:37:37,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:37,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034487782] [2022-01-18 07:37:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:37,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:37,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:37,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034487782] [2022-01-18 07:37:37,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034487782] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:37,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95777160] [2022-01-18 07:37:37,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:37:37,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:37,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:37,146 INFO L229 MonitoredProcess]: Starting monitored process 164 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:37,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Waiting until timeout for monitored process [2022-01-18 07:37:37,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:37:37,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:37,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:37:37,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:37,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:37,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95777160] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:37,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:37,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2022-01-18 07:37:37,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70227623] [2022-01-18 07:37:37,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:37,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:37:37,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:37,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:37:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:37:37,367 INFO L87 Difference]: Start difference. First operand 11719 states and 46545 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:38,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:38,769 INFO L93 Difference]: Finished difference Result 24453 states and 85433 transitions. [2022-01-18 07:37:38,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 07:37:38,769 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:38,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:38,834 INFO L225 Difference]: With dead ends: 24453 [2022-01-18 07:37:38,834 INFO L226 Difference]: Without dead ends: 24453 [2022-01-18 07:37:38,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3233 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2115, Invalid=5717, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 07:37:38,835 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 618 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:38,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 374 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:37:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24453 states. [2022-01-18 07:37:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24453 to 11722. [2022-01-18 07:37:39,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11722 states, 11721 states have (on average 3.9577681085231635) internal successors, (46389), 11721 states have internal predecessors, (46389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11722 states to 11722 states and 46389 transitions. [2022-01-18 07:37:39,251 INFO L78 Accepts]: Start accepts. Automaton has 11722 states and 46389 transitions. Word has length 28 [2022-01-18 07:37:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:39,251 INFO L470 AbstractCegarLoop]: Abstraction has 11722 states and 46389 transitions. [2022-01-18 07:37:39,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 11722 states and 46389 transitions. [2022-01-18 07:37:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:39,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:39,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:39,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (164)] Ended with exit code 0 [2022-01-18 07:37:39,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,164 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:39,475 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:39,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:39,476 INFO L85 PathProgramCache]: Analyzing trace with hash -619472876, now seen corresponding path program 95 times [2022-01-18 07:37:39,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:39,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90332428] [2022-01-18 07:37:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:39,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:39,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:39,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90332428] [2022-01-18 07:37:39,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90332428] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:39,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126997353] [2022-01-18 07:37:39,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:37:39,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:39,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:39,509 INFO L229 MonitoredProcess]: Starting monitored process 165 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:39,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Waiting until timeout for monitored process [2022-01-18 07:37:39,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:37:39,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:39,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:37:39,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:39,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:39,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126997353] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:39,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:39,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:37:39,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145391586] [2022-01-18 07:37:39,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:39,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:37:39,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:39,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:37:39,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:37:39,655 INFO L87 Difference]: Start difference. First operand 11722 states and 46389 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:40,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:40,370 INFO L93 Difference]: Finished difference Result 22330 states and 83311 transitions. [2022-01-18 07:37:40,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 07:37:40,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:40,437 INFO L225 Difference]: With dead ends: 22330 [2022-01-18 07:37:40,437 INFO L226 Difference]: Without dead ends: 22070 [2022-01-18 07:37:40,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=652, Invalid=2000, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 07:37:40,438 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 351 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:40,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 193 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:37:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22070 states. [2022-01-18 07:37:40,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22070 to 15934. [2022-01-18 07:37:40,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15934 states, 15933 states have (on average 4.017636352224942) internal successors, (64013), 15933 states have internal predecessors, (64013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:41,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15934 states to 15934 states and 64013 transitions. [2022-01-18 07:37:41,023 INFO L78 Accepts]: Start accepts. Automaton has 15934 states and 64013 transitions. Word has length 28 [2022-01-18 07:37:41,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:41,023 INFO L470 AbstractCegarLoop]: Abstraction has 15934 states and 64013 transitions. [2022-01-18 07:37:41,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:41,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15934 states and 64013 transitions. [2022-01-18 07:37:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:41,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:41,062 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:41,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (165)] Ended with exit code 0 [2022-01-18 07:37:41,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2022-01-18 07:37:41,262 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:41,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:41,262 INFO L85 PathProgramCache]: Analyzing trace with hash -36116904, now seen corresponding path program 96 times [2022-01-18 07:37:41,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:41,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864222261] [2022-01-18 07:37:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:41,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:41,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:41,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864222261] [2022-01-18 07:37:41,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864222261] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:41,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545608776] [2022-01-18 07:37:41,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:37:41,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:41,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:41,293 INFO L229 MonitoredProcess]: Starting monitored process 166 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:41,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Waiting until timeout for monitored process [2022-01-18 07:37:41,314 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:37:41,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:41,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:37:41,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:41,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:41,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545608776] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:41,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:41,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 13 [2022-01-18 07:37:41,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727361128] [2022-01-18 07:37:41,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:41,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:37:41,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:37:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:37:41,463 INFO L87 Difference]: Start difference. First operand 15934 states and 64013 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:41,876 INFO L93 Difference]: Finished difference Result 22929 states and 85346 transitions. [2022-01-18 07:37:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 07:37:41,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:41,957 INFO L225 Difference]: With dead ends: 22929 [2022-01-18 07:37:41,958 INFO L226 Difference]: Without dead ends: 22929 [2022-01-18 07:37:41,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=328, Invalid=602, Unknown=0, NotChecked=0, Total=930 [2022-01-18 07:37:41,958 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 321 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:41,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 78 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:37:41,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22929 states. [2022-01-18 07:37:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22929 to 16022. [2022-01-18 07:37:42,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16022 states, 16021 states have (on average 4.00280881343237) internal successors, (64129), 16021 states have internal predecessors, (64129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16022 states to 16022 states and 64129 transitions. [2022-01-18 07:37:42,456 INFO L78 Accepts]: Start accepts. Automaton has 16022 states and 64129 transitions. Word has length 28 [2022-01-18 07:37:42,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:42,456 INFO L470 AbstractCegarLoop]: Abstraction has 16022 states and 64129 transitions. [2022-01-18 07:37:42,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:42,456 INFO L276 IsEmpty]: Start isEmpty. Operand 16022 states and 64129 transitions. [2022-01-18 07:37:42,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:42,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:42,490 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:42,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (166)] Ended with exit code 0 [2022-01-18 07:37:42,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 166 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-01-18 07:37:42,700 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:42,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:42,700 INFO L85 PathProgramCache]: Analyzing trace with hash -664128222, now seen corresponding path program 97 times [2022-01-18 07:37:42,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:42,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162608767] [2022-01-18 07:37:42,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:42,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:42,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:42,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162608767] [2022-01-18 07:37:42,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162608767] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:42,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896539310] [2022-01-18 07:37:42,853 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:37:42,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:42,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:42,856 INFO L229 MonitoredProcess]: Starting monitored process 167 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:42,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Waiting until timeout for monitored process [2022-01-18 07:37:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:42,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:42,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:42,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:43,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896539310] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:43,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:43,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-01-18 07:37:43,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639780857] [2022-01-18 07:37:43,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:43,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:37:43,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:37:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:37:43,060 INFO L87 Difference]: Start difference. First operand 16022 states and 64129 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:44,065 INFO L93 Difference]: Finished difference Result 29125 states and 108582 transitions. [2022-01-18 07:37:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 07:37:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:44,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:44,161 INFO L225 Difference]: With dead ends: 29125 [2022-01-18 07:37:44,161 INFO L226 Difference]: Without dead ends: 29118 [2022-01-18 07:37:44,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1285, Invalid=4117, Unknown=0, NotChecked=0, Total=5402 [2022-01-18 07:37:44,162 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 392 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:44,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 296 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:37:44,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29118 states. [2022-01-18 07:37:44,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29118 to 16971. [2022-01-18 07:37:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16971 states, 16970 states have (on average 3.9985857395403652) internal successors, (67856), 16970 states have internal predecessors, (67856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16971 states to 16971 states and 67856 transitions. [2022-01-18 07:37:44,775 INFO L78 Accepts]: Start accepts. Automaton has 16971 states and 67856 transitions. Word has length 28 [2022-01-18 07:37:44,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:44,775 INFO L470 AbstractCegarLoop]: Abstraction has 16971 states and 67856 transitions. [2022-01-18 07:37:44,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 16971 states and 67856 transitions. [2022-01-18 07:37:44,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:44,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:44,805 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:44,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (167)] Ended with exit code 0 [2022-01-18 07:37:45,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2022-01-18 07:37:45,006 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1238551230, now seen corresponding path program 98 times [2022-01-18 07:37:45,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:45,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373805846] [2022-01-18 07:37:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:45,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:45,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:45,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373805846] [2022-01-18 07:37:45,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373805846] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:45,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403670086] [2022-01-18 07:37:45,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:37:45,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:45,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:45,042 INFO L229 MonitoredProcess]: Starting monitored process 168 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:45,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Waiting until timeout for monitored process [2022-01-18 07:37:45,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:37:45,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:45,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:45,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:45,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:45,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403670086] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:45,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:45,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 15 [2022-01-18 07:37:45,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516044488] [2022-01-18 07:37:45,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:45,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:37:45,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:45,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:37:45,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:37:45,207 INFO L87 Difference]: Start difference. First operand 16971 states and 67856 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:45,993 INFO L93 Difference]: Finished difference Result 28443 states and 106828 transitions. [2022-01-18 07:37:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 07:37:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:46,082 INFO L225 Difference]: With dead ends: 28443 [2022-01-18 07:37:46,083 INFO L226 Difference]: Without dead ends: 28443 [2022-01-18 07:37:46,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=752, Invalid=2554, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 07:37:46,083 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 360 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:46,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 296 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:37:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28443 states. [2022-01-18 07:37:46,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28443 to 17307. [2022-01-18 07:37:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17307 states, 17306 states have (on average 3.983011672252398) internal successors, (68930), 17306 states have internal predecessors, (68930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17307 states to 17307 states and 68930 transitions. [2022-01-18 07:37:46,606 INFO L78 Accepts]: Start accepts. Automaton has 17307 states and 68930 transitions. Word has length 28 [2022-01-18 07:37:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:46,606 INFO L470 AbstractCegarLoop]: Abstraction has 17307 states and 68930 transitions. [2022-01-18 07:37:46,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:46,606 INFO L276 IsEmpty]: Start isEmpty. Operand 17307 states and 68930 transitions. [2022-01-18 07:37:46,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:46,639 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:46,639 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:46,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (168)] Ended with exit code 0 [2022-01-18 07:37:46,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 168 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-01-18 07:37:46,839 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:46,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:46,839 INFO L85 PathProgramCache]: Analyzing trace with hash 155528574, now seen corresponding path program 99 times [2022-01-18 07:37:46,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:46,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701514480] [2022-01-18 07:37:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:46,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:46,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:46,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701514480] [2022-01-18 07:37:46,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701514480] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:46,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389722010] [2022-01-18 07:37:46,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:37:46,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:46,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:46,870 INFO L229 MonitoredProcess]: Starting monitored process 169 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:46,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Waiting until timeout for monitored process [2022-01-18 07:37:46,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:37:46,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:46,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:37:46,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:47,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:47,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:47,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389722010] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:47,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:47,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:37:47,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696761290] [2022-01-18 07:37:47,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:47,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:37:47,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:47,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:37:47,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:37:47,089 INFO L87 Difference]: Start difference. First operand 17307 states and 68930 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:47,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:47,602 INFO L93 Difference]: Finished difference Result 23169 states and 87572 transitions. [2022-01-18 07:37:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 07:37:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:47,674 INFO L225 Difference]: With dead ends: 23169 [2022-01-18 07:37:47,674 INFO L226 Difference]: Without dead ends: 23129 [2022-01-18 07:37:47,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:37:47,674 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 280 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:47,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 148 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:37:47,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23129 states. [2022-01-18 07:37:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23129 to 17987. [2022-01-18 07:37:48,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17987 states, 17986 states have (on average 3.9894362281774716) internal successors, (71754), 17986 states have internal predecessors, (71754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17987 states to 17987 states and 71754 transitions. [2022-01-18 07:37:48,177 INFO L78 Accepts]: Start accepts. Automaton has 17987 states and 71754 transitions. Word has length 28 [2022-01-18 07:37:48,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:48,178 INFO L470 AbstractCegarLoop]: Abstraction has 17987 states and 71754 transitions. [2022-01-18 07:37:48,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:48,178 INFO L276 IsEmpty]: Start isEmpty. Operand 17987 states and 71754 transitions. [2022-01-18 07:37:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:48,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:48,212 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:48,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (169)] Ended with exit code 0 [2022-01-18 07:37:48,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-01-18 07:37:48,412 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:48,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1626606692, now seen corresponding path program 100 times [2022-01-18 07:37:48,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:48,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638328002] [2022-01-18 07:37:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:48,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:48,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:48,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638328002] [2022-01-18 07:37:48,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638328002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:48,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843804220] [2022-01-18 07:37:48,442 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:37:48,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:48,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:48,443 INFO L229 MonitoredProcess]: Starting monitored process 170 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:48,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Waiting until timeout for monitored process [2022-01-18 07:37:48,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:37:48,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:48,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:37:48,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:48,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:48,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843804220] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:48,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:48,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2022-01-18 07:37:48,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342541756] [2022-01-18 07:37:48,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:48,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:37:48,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:48,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:37:48,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:37:48,591 INFO L87 Difference]: Start difference. First operand 17987 states and 71754 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:49,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:49,113 INFO L93 Difference]: Finished difference Result 23904 states and 89849 transitions. [2022-01-18 07:37:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 07:37:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:49,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:49,183 INFO L225 Difference]: With dead ends: 23904 [2022-01-18 07:37:49,183 INFO L226 Difference]: Without dead ends: 23904 [2022-01-18 07:37:49,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=376, Invalid=956, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:37:49,184 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 252 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:49,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 180 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:37:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23904 states. [2022-01-18 07:37:49,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23904 to 18105. [2022-01-18 07:37:49,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18105 states, 18104 states have (on average 3.985030932390632) internal successors, (72145), 18104 states have internal predecessors, (72145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18105 states to 18105 states and 72145 transitions. [2022-01-18 07:37:49,769 INFO L78 Accepts]: Start accepts. Automaton has 18105 states and 72145 transitions. Word has length 28 [2022-01-18 07:37:49,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:49,769 INFO L470 AbstractCegarLoop]: Abstraction has 18105 states and 72145 transitions. [2022-01-18 07:37:49,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 18105 states and 72145 transitions. [2022-01-18 07:37:49,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:49,803 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:49,803 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:49,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (170)] Forceful destruction successful, exit code 0 [2022-01-18 07:37:50,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,170 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:50,003 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:50,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1193730088, now seen corresponding path program 101 times [2022-01-18 07:37:50,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:50,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622329684] [2022-01-18 07:37:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:50,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:50,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:50,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622329684] [2022-01-18 07:37:50,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622329684] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:50,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021044778] [2022-01-18 07:37:50,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:37:50,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:50,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:50,047 INFO L229 MonitoredProcess]: Starting monitored process 171 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:50,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Waiting until timeout for monitored process [2022-01-18 07:37:50,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:37:50,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:50,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:50,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:50,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:37:50,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021044778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:50,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:50,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 15 [2022-01-18 07:37:50,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606097190] [2022-01-18 07:37:50,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:50,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:37:50,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:50,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:37:50,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:37:50,207 INFO L87 Difference]: Start difference. First operand 18105 states and 72145 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:50,924 INFO L93 Difference]: Finished difference Result 28885 states and 109443 transitions. [2022-01-18 07:37:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 07:37:50,924 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:50,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:51,012 INFO L225 Difference]: With dead ends: 28885 [2022-01-18 07:37:51,012 INFO L226 Difference]: Without dead ends: 28881 [2022-01-18 07:37:51,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=656, Invalid=2100, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 07:37:51,013 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 436 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:51,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 279 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:37:51,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28881 states. [2022-01-18 07:37:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28881 to 17991. [2022-01-18 07:37:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17991 states, 17990 states have (on average 3.9883268482490273) internal successors, (71750), 17990 states have internal predecessors, (71750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:51,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17991 states to 17991 states and 71750 transitions. [2022-01-18 07:37:51,531 INFO L78 Accepts]: Start accepts. Automaton has 17991 states and 71750 transitions. Word has length 28 [2022-01-18 07:37:51,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:51,531 INFO L470 AbstractCegarLoop]: Abstraction has 17991 states and 71750 transitions. [2022-01-18 07:37:51,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:51,531 INFO L276 IsEmpty]: Start isEmpty. Operand 17991 states and 71750 transitions. [2022-01-18 07:37:51,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:51,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:51,563 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:51,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (171)] Ended with exit code 0 [2022-01-18 07:37:51,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,171 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:51,763 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:51,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash 297909272, now seen corresponding path program 102 times [2022-01-18 07:37:51,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:51,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686733031] [2022-01-18 07:37:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:51,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:51,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:51,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686733031] [2022-01-18 07:37:51,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686733031] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:51,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092779480] [2022-01-18 07:37:51,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:37:51,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:51,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:51,797 INFO L229 MonitoredProcess]: Starting monitored process 172 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:51,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Waiting until timeout for monitored process [2022-01-18 07:37:51,817 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:37:51,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:51,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:37:51,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:51,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:51,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092779480] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:51,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:51,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:37:51,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647062858] [2022-01-18 07:37:51,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:51,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:37:51,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:51,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:37:51,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:37:51,946 INFO L87 Difference]: Start difference. First operand 17991 states and 71750 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:52,635 INFO L93 Difference]: Finished difference Result 25132 states and 94101 transitions. [2022-01-18 07:37:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 07:37:52,635 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:52,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:52,715 INFO L225 Difference]: With dead ends: 25132 [2022-01-18 07:37:52,716 INFO L226 Difference]: Without dead ends: 25132 [2022-01-18 07:37:52,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=516, Invalid=1290, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 07:37:52,716 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 273 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:52,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 218 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:37:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25132 states. [2022-01-18 07:37:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25132 to 18194. [2022-01-18 07:37:53,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18194 states, 18193 states have (on average 3.9836200736547025) internal successors, (72474), 18193 states have internal predecessors, (72474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:53,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18194 states to 18194 states and 72474 transitions. [2022-01-18 07:37:53,190 INFO L78 Accepts]: Start accepts. Automaton has 18194 states and 72474 transitions. Word has length 28 [2022-01-18 07:37:53,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:53,190 INFO L470 AbstractCegarLoop]: Abstraction has 18194 states and 72474 transitions. [2022-01-18 07:37:53,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:53,190 INFO L276 IsEmpty]: Start isEmpty. Operand 18194 states and 72474 transitions. [2022-01-18 07:37:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:53,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:53,229 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:53,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (172)] Ended with exit code 0 [2022-01-18 07:37:53,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable172 [2022-01-18 07:37:53,430 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1791066746, now seen corresponding path program 103 times [2022-01-18 07:37:53,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:53,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149045150] [2022-01-18 07:37:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:53,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:53,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:53,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149045150] [2022-01-18 07:37:53,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149045150] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:53,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762447106] [2022-01-18 07:37:53,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:37:53,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:53,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:53,470 INFO L229 MonitoredProcess]: Starting monitored process 173 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:53,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Waiting until timeout for monitored process [2022-01-18 07:37:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:53,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:53,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:53,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:53,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762447106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:53,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:53,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-01-18 07:37:53,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337927855] [2022-01-18 07:37:53,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:53,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:37:53,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:37:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:37:53,632 INFO L87 Difference]: Start difference. First operand 18194 states and 72474 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:54,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:54,432 INFO L93 Difference]: Finished difference Result 29102 states and 110153 transitions. [2022-01-18 07:37:54,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 07:37:54,432 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:54,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:54,528 INFO L225 Difference]: With dead ends: 29102 [2022-01-18 07:37:54,528 INFO L226 Difference]: Without dead ends: 29090 [2022-01-18 07:37:54,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=755, Invalid=2551, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 07:37:54,529 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 435 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:54,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 283 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:37:54,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29090 states. [2022-01-18 07:37:55,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29090 to 18222. [2022-01-18 07:37:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18222 states, 18221 states have (on average 3.981120684923989) internal successors, (72540), 18221 states have internal predecessors, (72540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:55,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18222 states to 18222 states and 72540 transitions. [2022-01-18 07:37:55,218 INFO L78 Accepts]: Start accepts. Automaton has 18222 states and 72540 transitions. Word has length 28 [2022-01-18 07:37:55,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:55,218 INFO L470 AbstractCegarLoop]: Abstraction has 18222 states and 72540 transitions. [2022-01-18 07:37:55,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:55,218 INFO L276 IsEmpty]: Start isEmpty. Operand 18222 states and 72540 transitions. [2022-01-18 07:37:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:55,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:55,256 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:55,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (173)] Forceful destruction successful, exit code 0 [2022-01-18 07:37:55,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,173 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:55,457 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:55,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:55,457 INFO L85 PathProgramCache]: Analyzing trace with hash 22785830, now seen corresponding path program 104 times [2022-01-18 07:37:55,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:55,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770504117] [2022-01-18 07:37:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:55,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:55,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:55,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770504117] [2022-01-18 07:37:55,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770504117] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:55,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990812804] [2022-01-18 07:37:55,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:37:55,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:55,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:55,501 INFO L229 MonitoredProcess]: Starting monitored process 174 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:55,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Waiting until timeout for monitored process [2022-01-18 07:37:55,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:37:55,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:55,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:55,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:55,606 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:55,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:55,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:55,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990812804] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:55,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:55,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:37:55,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215982403] [2022-01-18 07:37:55,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:55,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:37:55,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:55,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:37:55,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:37:55,700 INFO L87 Difference]: Start difference. First operand 18222 states and 72540 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:37:57,244 INFO L93 Difference]: Finished difference Result 40859 states and 152607 transitions. [2022-01-18 07:37:57,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 07:37:57,244 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:37:57,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:37:57,369 INFO L225 Difference]: With dead ends: 40859 [2022-01-18 07:37:57,370 INFO L226 Difference]: Without dead ends: 40859 [2022-01-18 07:37:57,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3597 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2043, Invalid=7463, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 07:37:57,371 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 502 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:37:57,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 383 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:37:57,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40859 states. [2022-01-18 07:37:58,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40859 to 24537. [2022-01-18 07:37:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24537 states, 24536 states have (on average 4.01450929246821) internal successors, (98500), 24536 states have internal predecessors, (98500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24537 states to 24537 states and 98500 transitions. [2022-01-18 07:37:58,504 INFO L78 Accepts]: Start accepts. Automaton has 24537 states and 98500 transitions. Word has length 28 [2022-01-18 07:37:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:37:58,504 INFO L470 AbstractCegarLoop]: Abstraction has 24537 states and 98500 transitions. [2022-01-18 07:37:58,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:37:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 24537 states and 98500 transitions. [2022-01-18 07:37:58,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:37:58,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:37:58,553 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:37:58,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (174)] Ended with exit code 0 [2022-01-18 07:37:58,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,174 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:58,754 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:37:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:37:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash 104161918, now seen corresponding path program 105 times [2022-01-18 07:37:58,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:37:58,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098785902] [2022-01-18 07:37:58,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:37:58,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:37:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:37:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:58,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:37:58,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098785902] [2022-01-18 07:37:58,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098785902] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:37:58,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235373511] [2022-01-18 07:37:58,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:37:58,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:37:58,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:37:58,796 INFO L229 MonitoredProcess]: Starting monitored process 175 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:37:58,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Waiting until timeout for monitored process [2022-01-18 07:37:58,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 07:37:58,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:37:58,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:37:58,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:37:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:58,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:37:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:37:58,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235373511] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:37:58,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:37:58,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:37:58,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114935039] [2022-01-18 07:37:58,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:37:58,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:37:58,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:37:58,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:37:58,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:37:58,976 INFO L87 Difference]: Start difference. First operand 24537 states and 98500 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:00,404 INFO L93 Difference]: Finished difference Result 39804 states and 149837 transitions. [2022-01-18 07:38:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 07:38:00,405 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:00,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:00,543 INFO L225 Difference]: With dead ends: 39804 [2022-01-18 07:38:00,543 INFO L226 Difference]: Without dead ends: 39784 [2022-01-18 07:38:00,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2821 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1761, Invalid=6071, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 07:38:00,544 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 569 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:00,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 329 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:38:00,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39784 states. [2022-01-18 07:38:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39784 to 24329. [2022-01-18 07:38:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24329 states, 24328 states have (on average 4.017592897073331) internal successors, (97740), 24328 states have internal predecessors, (97740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:01,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24329 states to 24329 states and 97740 transitions. [2022-01-18 07:38:01,630 INFO L78 Accepts]: Start accepts. Automaton has 24329 states and 97740 transitions. Word has length 28 [2022-01-18 07:38:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:01,630 INFO L470 AbstractCegarLoop]: Abstraction has 24329 states and 97740 transitions. [2022-01-18 07:38:01,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 24329 states and 97740 transitions. [2022-01-18 07:38:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:01,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:01,684 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:01,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (175)] Ended with exit code 0 [2022-01-18 07:38:01,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2022-01-18 07:38:01,884 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1410930054, now seen corresponding path program 106 times [2022-01-18 07:38:01,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:01,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120610597] [2022-01-18 07:38:01,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:01,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:01,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:01,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120610597] [2022-01-18 07:38:01,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120610597] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:01,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478478244] [2022-01-18 07:38:01,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:38:01,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:01,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:01,927 INFO L229 MonitoredProcess]: Starting monitored process 176 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:01,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Waiting until timeout for monitored process [2022-01-18 07:38:01,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:38:01,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:01,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:01,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:02,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:02,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:02,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478478244] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:02,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:02,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:38:02,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352947831] [2022-01-18 07:38:02,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:02,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:38:02,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:02,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:38:02,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:38:02,227 INFO L87 Difference]: Start difference. First operand 24329 states and 97740 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:04,022 INFO L93 Difference]: Finished difference Result 41258 states and 153613 transitions. [2022-01-18 07:38:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-18 07:38:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:04,155 INFO L225 Difference]: With dead ends: 41258 [2022-01-18 07:38:04,155 INFO L226 Difference]: Without dead ends: 41222 [2022-01-18 07:38:04,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2733, Invalid=10377, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 07:38:04,156 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 785 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:04,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 392 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:38:04,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41222 states. [2022-01-18 07:38:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41222 to 24421. [2022-01-18 07:38:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24421 states, 24420 states have (on average 4.016052416052416) internal successors, (98072), 24420 states have internal predecessors, (98072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24421 states to 24421 states and 98072 transitions. [2022-01-18 07:38:05,175 INFO L78 Accepts]: Start accepts. Automaton has 24421 states and 98072 transitions. Word has length 28 [2022-01-18 07:38:05,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:05,175 INFO L470 AbstractCegarLoop]: Abstraction has 24421 states and 98072 transitions. [2022-01-18 07:38:05,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand 24421 states and 98072 transitions. [2022-01-18 07:38:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:05,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:05,228 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:05,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (176)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:05,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,176 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:05,428 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:05,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash 186196662, now seen corresponding path program 107 times [2022-01-18 07:38:05,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:05,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795509878] [2022-01-18 07:38:05,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:05,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:05,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:05,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795509878] [2022-01-18 07:38:05,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795509878] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:05,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027553457] [2022-01-18 07:38:05,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:38:05,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:05,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:05,472 INFO L229 MonitoredProcess]: Starting monitored process 177 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:05,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Waiting until timeout for monitored process [2022-01-18 07:38:05,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:38:05,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:05,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:05,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:05,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:05,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027553457] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:05,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:05,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:38:05,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036154449] [2022-01-18 07:38:05,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:05,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:38:05,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:38:05,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:38:05,716 INFO L87 Difference]: Start difference. First operand 24421 states and 98072 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:08,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:08,716 INFO L93 Difference]: Finished difference Result 37698 states and 140323 transitions. [2022-01-18 07:38:08,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-18 07:38:08,716 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:08,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:08,843 INFO L225 Difference]: With dead ends: 37698 [2022-01-18 07:38:08,843 INFO L226 Difference]: Without dead ends: 37692 [2022-01-18 07:38:08,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11444 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=5430, Invalid=21302, Unknown=0, NotChecked=0, Total=26732 [2022-01-18 07:38:08,845 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 916 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:08,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 583 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:38:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37692 states. [2022-01-18 07:38:09,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37692 to 24659. [2022-01-18 07:38:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24659 states, 24658 states have (on average 4.009205937221186) internal successors, (98859), 24658 states have internal predecessors, (98859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24659 states to 24659 states and 98859 transitions. [2022-01-18 07:38:09,892 INFO L78 Accepts]: Start accepts. Automaton has 24659 states and 98859 transitions. Word has length 28 [2022-01-18 07:38:09,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:09,892 INFO L470 AbstractCegarLoop]: Abstraction has 24659 states and 98859 transitions. [2022-01-18 07:38:09,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:09,892 INFO L276 IsEmpty]: Start isEmpty. Operand 24659 states and 98859 transitions. [2022-01-18 07:38:09,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:09,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:09,934 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:09,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (177)] Ended with exit code 0 [2022-01-18 07:38:10,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,177 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:10,135 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:10,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:10,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1829235816, now seen corresponding path program 108 times [2022-01-18 07:38:10,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:10,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826501309] [2022-01-18 07:38:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:10,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:10,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:10,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826501309] [2022-01-18 07:38:10,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826501309] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127081940] [2022-01-18 07:38:10,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:38:10,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:10,177 INFO L229 MonitoredProcess]: Starting monitored process 178 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:10,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Waiting until timeout for monitored process [2022-01-18 07:38:10,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 07:38:10,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:10,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:10,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:10,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:10,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127081940] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:10,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:10,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:38:10,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606026793] [2022-01-18 07:38:10,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:10,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:38:10,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:38:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:38:10,403 INFO L87 Difference]: Start difference. First operand 24659 states and 98859 transitions. Second operand has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:13,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:13,955 INFO L93 Difference]: Finished difference Result 38359 states and 144218 transitions. [2022-01-18 07:38:13,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-01-18 07:38:13,955 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:13,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:14,096 INFO L225 Difference]: With dead ends: 38359 [2022-01-18 07:38:14,096 INFO L226 Difference]: Without dead ends: 38339 [2022-01-18 07:38:14,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16403 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=7365, Invalid=32037, Unknown=0, NotChecked=0, Total=39402 [2022-01-18 07:38:14,098 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1089 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:14,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1089 Valid, 495 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:38:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38339 states. [2022-01-18 07:38:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38339 to 24396. [2022-01-18 07:38:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24396 states, 24395 states have (on average 4.013855298216848) internal successors, (97918), 24395 states have internal predecessors, (97918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:15,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24396 states to 24396 states and 97918 transitions. [2022-01-18 07:38:15,099 INFO L78 Accepts]: Start accepts. Automaton has 24396 states and 97918 transitions. Word has length 28 [2022-01-18 07:38:15,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:15,099 INFO L470 AbstractCegarLoop]: Abstraction has 24396 states and 97918 transitions. [2022-01-18 07:38:15,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.590909090909091) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 24396 states and 97918 transitions. [2022-01-18 07:38:15,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:15,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:15,147 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:15,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (178)] Ended with exit code 0 [2022-01-18 07:38:15,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,178 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:15,347 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:15,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:15,347 INFO L85 PathProgramCache]: Analyzing trace with hash 561778638, now seen corresponding path program 109 times [2022-01-18 07:38:15,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:15,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246370246] [2022-01-18 07:38:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:15,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:15,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:15,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246370246] [2022-01-18 07:38:15,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246370246] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:15,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510831797] [2022-01-18 07:38:15,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:38:15,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:15,388 INFO L229 MonitoredProcess]: Starting monitored process 179 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:15,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Waiting until timeout for monitored process [2022-01-18 07:38:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:15,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:15,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:15,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:15,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510831797] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:15,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:15,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2022-01-18 07:38:15,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106268473] [2022-01-18 07:38:15,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:15,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:38:15,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:15,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:38:15,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:38:15,592 INFO L87 Difference]: Start difference. First operand 24396 states and 97918 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:18,367 INFO L93 Difference]: Finished difference Result 37169 states and 140623 transitions. [2022-01-18 07:38:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-18 07:38:18,367 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:18,496 INFO L225 Difference]: With dead ends: 37169 [2022-01-18 07:38:18,496 INFO L226 Difference]: Without dead ends: 37133 [2022-01-18 07:38:18,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10541 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=4928, Invalid=21478, Unknown=0, NotChecked=0, Total=26406 [2022-01-18 07:38:18,499 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 722 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:18,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 464 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:38:18,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37133 states. [2022-01-18 07:38:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37133 to 24412. [2022-01-18 07:38:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24412 states, 24411 states have (on average 4.012412437016099) internal successors, (97947), 24411 states have internal predecessors, (97947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24412 states to 24412 states and 97947 transitions. [2022-01-18 07:38:19,418 INFO L78 Accepts]: Start accepts. Automaton has 24412 states and 97947 transitions. Word has length 28 [2022-01-18 07:38:19,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:19,418 INFO L470 AbstractCegarLoop]: Abstraction has 24412 states and 97947 transitions. [2022-01-18 07:38:19,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:19,418 INFO L276 IsEmpty]: Start isEmpty. Operand 24412 states and 97947 transitions. [2022-01-18 07:38:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:19,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:19,465 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:19,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (179)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:19,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-01-18 07:38:19,665 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:19,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2037892514, now seen corresponding path program 110 times [2022-01-18 07:38:19,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:19,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501142473] [2022-01-18 07:38:19,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:19,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:19,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:19,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501142473] [2022-01-18 07:38:19,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501142473] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:19,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820478122] [2022-01-18 07:38:19,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:38:19,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:19,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:19,702 INFO L229 MonitoredProcess]: Starting monitored process 180 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:19,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Waiting until timeout for monitored process [2022-01-18 07:38:19,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:38:19,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:19,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:19,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:19,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:38:20,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820478122] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:20,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:20,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 20 [2022-01-18 07:38:20,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782518131] [2022-01-18 07:38:20,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:20,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:38:20,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:38:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:38:20,077 INFO L87 Difference]: Start difference. First operand 24412 states and 97947 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:22,666 INFO L93 Difference]: Finished difference Result 56538 states and 210546 transitions. [2022-01-18 07:38:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 07:38:22,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:23,033 INFO L225 Difference]: With dead ends: 56538 [2022-01-18 07:38:23,033 INFO L226 Difference]: Without dead ends: 56538 [2022-01-18 07:38:23,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8271 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3926, Invalid=14980, Unknown=0, NotChecked=0, Total=18906 [2022-01-18 07:38:23,034 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 596 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:23,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 535 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:38:23,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56538 states. [2022-01-18 07:38:24,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56538 to 25144. [2022-01-18 07:38:24,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25144 states, 25143 states have (on average 4.031579366026329) internal successors, (101366), 25143 states have internal predecessors, (101366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25144 states to 25144 states and 101366 transitions. [2022-01-18 07:38:24,156 INFO L78 Accepts]: Start accepts. Automaton has 25144 states and 101366 transitions. Word has length 28 [2022-01-18 07:38:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:24,156 INFO L470 AbstractCegarLoop]: Abstraction has 25144 states and 101366 transitions. [2022-01-18 07:38:24,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 25144 states and 101366 transitions. [2022-01-18 07:38:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:24,205 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:24,205 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:24,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (180)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:24,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,180 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:24,405 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:24,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:24,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1690122702, now seen corresponding path program 111 times [2022-01-18 07:38:24,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:24,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276460054] [2022-01-18 07:38:24,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:24,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:24,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:24,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276460054] [2022-01-18 07:38:24,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276460054] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:24,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763895456] [2022-01-18 07:38:24,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:38:24,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:24,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:24,442 INFO L229 MonitoredProcess]: Starting monitored process 181 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:24,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Waiting until timeout for monitored process [2022-01-18 07:38:24,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:38:24,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:24,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:24,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:24,572 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:24,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:24,671 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:38:24,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763895456] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:24,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:24,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 20 [2022-01-18 07:38:24,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888264188] [2022-01-18 07:38:24,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:24,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:38:24,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:24,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:38:24,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:38:24,673 INFO L87 Difference]: Start difference. First operand 25144 states and 101366 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:27,454 INFO L93 Difference]: Finished difference Result 60505 states and 225242 transitions. [2022-01-18 07:38:27,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 07:38:27,454 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:27,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:27,675 INFO L225 Difference]: With dead ends: 60505 [2022-01-18 07:38:27,676 INFO L226 Difference]: Without dead ends: 60505 [2022-01-18 07:38:27,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11105 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4654, Invalid=20468, Unknown=0, NotChecked=0, Total=25122 [2022-01-18 07:38:27,677 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 737 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:27,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 517 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:38:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60505 states. [2022-01-18 07:38:28,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60505 to 25015. [2022-01-18 07:38:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25015 states, 25014 states have (on average 4.025185895898297) internal successors, (100686), 25014 states have internal predecessors, (100686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25015 states to 25015 states and 100686 transitions. [2022-01-18 07:38:28,916 INFO L78 Accepts]: Start accepts. Automaton has 25015 states and 100686 transitions. Word has length 28 [2022-01-18 07:38:28,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:28,916 INFO L470 AbstractCegarLoop]: Abstraction has 25015 states and 100686 transitions. [2022-01-18 07:38:28,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:28,916 INFO L276 IsEmpty]: Start isEmpty. Operand 25015 states and 100686 transitions. [2022-01-18 07:38:28,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:28,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:28,966 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:28,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (181)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:29,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,181 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:29,166 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:29,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1076134064, now seen corresponding path program 112 times [2022-01-18 07:38:29,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:29,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295506134] [2022-01-18 07:38:29,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:29,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:29,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:29,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295506134] [2022-01-18 07:38:29,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295506134] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:29,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119341605] [2022-01-18 07:38:29,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:38:29,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:29,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:29,209 INFO L229 MonitoredProcess]: Starting monitored process 182 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:29,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Waiting until timeout for monitored process [2022-01-18 07:38:29,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:38:29,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:29,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:29,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:29,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:29,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:29,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119341605] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:29,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:29,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-01-18 07:38:29,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613497319] [2022-01-18 07:38:29,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:29,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:38:29,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:29,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:38:29,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:38:29,428 INFO L87 Difference]: Start difference. First operand 25015 states and 100686 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:31,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:31,930 INFO L93 Difference]: Finished difference Result 38522 states and 145188 transitions. [2022-01-18 07:38:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-18 07:38:31,931 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:31,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:32,063 INFO L225 Difference]: With dead ends: 38522 [2022-01-18 07:38:32,064 INFO L226 Difference]: Without dead ends: 38522 [2022-01-18 07:38:32,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7691 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3454, Invalid=15178, Unknown=0, NotChecked=0, Total=18632 [2022-01-18 07:38:32,065 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 628 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:32,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 525 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:38:32,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38522 states. [2022-01-18 07:38:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38522 to 25352. [2022-01-18 07:38:32,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25352 states, 25351 states have (on average 4.021103703995897) internal successors, (101939), 25351 states have internal predecessors, (101939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:33,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25352 states to 25352 states and 101939 transitions. [2022-01-18 07:38:33,031 INFO L78 Accepts]: Start accepts. Automaton has 25352 states and 101939 transitions. Word has length 28 [2022-01-18 07:38:33,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:33,031 INFO L470 AbstractCegarLoop]: Abstraction has 25352 states and 101939 transitions. [2022-01-18 07:38:33,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 25352 states and 101939 transitions. [2022-01-18 07:38:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:33,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:33,080 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:33,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (182)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:33,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 182 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2022-01-18 07:38:33,280 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:33,280 INFO L85 PathProgramCache]: Analyzing trace with hash 77566098, now seen corresponding path program 113 times [2022-01-18 07:38:33,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:33,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744953935] [2022-01-18 07:38:33,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:33,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:33,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:33,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744953935] [2022-01-18 07:38:33,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744953935] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:33,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349449769] [2022-01-18 07:38:33,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:38:33,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:33,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:33,317 INFO L229 MonitoredProcess]: Starting monitored process 183 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:33,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Waiting until timeout for monitored process [2022-01-18 07:38:33,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 07:38:33,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:33,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:33,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:33,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:33,529 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:33,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349449769] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:33,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:33,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 07:38:33,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227626757] [2022-01-18 07:38:33,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:33,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:38:33,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:33,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:38:33,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:38:33,530 INFO L87 Difference]: Start difference. First operand 25352 states and 101939 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:35,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:35,285 INFO L93 Difference]: Finished difference Result 36885 states and 140699 transitions. [2022-01-18 07:38:35,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 07:38:35,285 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:35,401 INFO L225 Difference]: With dead ends: 36885 [2022-01-18 07:38:35,402 INFO L226 Difference]: Without dead ends: 36881 [2022-01-18 07:38:35,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4699 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2523, Invalid=9467, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 07:38:35,402 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 560 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:35,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 457 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:38:35,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36881 states. [2022-01-18 07:38:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36881 to 25310. [2022-01-18 07:38:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25310 states, 25309 states have (on average 4.022205539531392) internal successors, (101798), 25309 states have internal predecessors, (101798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:36,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25310 states to 25310 states and 101798 transitions. [2022-01-18 07:38:36,247 INFO L78 Accepts]: Start accepts. Automaton has 25310 states and 101798 transitions. Word has length 28 [2022-01-18 07:38:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:36,248 INFO L470 AbstractCegarLoop]: Abstraction has 25310 states and 101798 transitions. [2022-01-18 07:38:36,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 20 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:36,248 INFO L276 IsEmpty]: Start isEmpty. Operand 25310 states and 101798 transitions. [2022-01-18 07:38:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:36,294 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:36,294 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:36,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (183)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:36,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,183 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:36,495 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2038513552, now seen corresponding path program 114 times [2022-01-18 07:38:36,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:36,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084491674] [2022-01-18 07:38:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:36,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:36,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:36,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084491674] [2022-01-18 07:38:36,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084491674] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:36,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134110166] [2022-01-18 07:38:36,534 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:38:36,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:36,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:36,535 INFO L229 MonitoredProcess]: Starting monitored process 184 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:36,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Waiting until timeout for monitored process [2022-01-18 07:38:36,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 07:38:36,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:36,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:36,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:36,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:36,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134110166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:36,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:36,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 20 [2022-01-18 07:38:36,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128537308] [2022-01-18 07:38:36,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:36,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:38:36,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:36,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:38:36,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:38:36,738 INFO L87 Difference]: Start difference. First operand 25310 states and 101798 transitions. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:38,709 INFO L93 Difference]: Finished difference Result 37105 states and 141231 transitions. [2022-01-18 07:38:38,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 07:38:38,710 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:38,848 INFO L225 Difference]: With dead ends: 37105 [2022-01-18 07:38:38,848 INFO L226 Difference]: Without dead ends: 37093 [2022-01-18 07:38:38,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5383 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2694, Invalid=11112, Unknown=0, NotChecked=0, Total=13806 [2022-01-18 07:38:38,850 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 651 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:38,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 503 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:38:38,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37093 states. [2022-01-18 07:38:39,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37093 to 25416. [2022-01-18 07:38:39,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25416 states, 25415 states have (on average 4.018768443832382) internal successors, (102137), 25415 states have internal predecessors, (102137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25416 states to 25416 states and 102137 transitions. [2022-01-18 07:38:39,829 INFO L78 Accepts]: Start accepts. Automaton has 25416 states and 102137 transitions. Word has length 28 [2022-01-18 07:38:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:39,829 INFO L470 AbstractCegarLoop]: Abstraction has 25416 states and 102137 transitions. [2022-01-18 07:38:39,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.75) internal successors, (55), 20 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 25416 states and 102137 transitions. [2022-01-18 07:38:39,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:39,877 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:39,877 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:39,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (184)] Ended with exit code 0 [2022-01-18 07:38:40,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,184 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:40,077 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:40,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2061380766, now seen corresponding path program 70 times [2022-01-18 07:38:40,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:40,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851746911] [2022-01-18 07:38:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:40,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:40,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:40,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851746911] [2022-01-18 07:38:40,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851746911] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:40,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399682453] [2022-01-18 07:38:40,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:38:40,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:40,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:40,118 INFO L229 MonitoredProcess]: Starting monitored process 185 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:40,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Waiting until timeout for monitored process [2022-01-18 07:38:40,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:38:40,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:40,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:40,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:40,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:40,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399682453] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:40,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:40,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-01-18 07:38:40,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61136548] [2022-01-18 07:38:40,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:40,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:38:40,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:38:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:38:40,271 INFO L87 Difference]: Start difference. First operand 25416 states and 102137 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:41,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:41,185 INFO L93 Difference]: Finished difference Result 37614 states and 145573 transitions. [2022-01-18 07:38:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 07:38:41,185 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:41,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:41,311 INFO L225 Difference]: With dead ends: 37614 [2022-01-18 07:38:41,311 INFO L226 Difference]: Without dead ends: 37614 [2022-01-18 07:38:41,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=664, Invalid=2092, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 07:38:41,312 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 266 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:41,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 237 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:38:41,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37614 states. [2022-01-18 07:38:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37614 to 25510. [2022-01-18 07:38:42,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25510 states, 25509 states have (on average 4.016856795640754) internal successors, (102466), 25509 states have internal predecessors, (102466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25510 states to 25510 states and 102466 transitions. [2022-01-18 07:38:42,120 INFO L78 Accepts]: Start accepts. Automaton has 25510 states and 102466 transitions. Word has length 28 [2022-01-18 07:38:42,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:42,120 INFO L470 AbstractCegarLoop]: Abstraction has 25510 states and 102466 transitions. [2022-01-18 07:38:42,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:42,120 INFO L276 IsEmpty]: Start isEmpty. Operand 25510 states and 102466 transitions. [2022-01-18 07:38:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:42,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:42,289 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:42,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (185)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:42,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,185 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:42,490 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:42,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:42,490 INFO L85 PathProgramCache]: Analyzing trace with hash 290874174, now seen corresponding path program 71 times [2022-01-18 07:38:42,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:42,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88781176] [2022-01-18 07:38:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:42,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:42,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:42,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88781176] [2022-01-18 07:38:42,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88781176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:42,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84188614] [2022-01-18 07:38:42,527 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:38:42,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:42,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:42,528 INFO L229 MonitoredProcess]: Starting monitored process 186 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:42,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Waiting until timeout for monitored process [2022-01-18 07:38:42,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:38:42,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:42,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:42,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:42,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:42,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84188614] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:42,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:42,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:38:42,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237967742] [2022-01-18 07:38:42,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:42,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:38:42,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:42,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:38:42,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:38:42,691 INFO L87 Difference]: Start difference. First operand 25510 states and 102466 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:43,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:43,670 INFO L93 Difference]: Finished difference Result 38267 states and 147665 transitions. [2022-01-18 07:38:43,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 07:38:43,670 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:43,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:43,818 INFO L225 Difference]: With dead ends: 38267 [2022-01-18 07:38:43,818 INFO L226 Difference]: Without dead ends: 38267 [2022-01-18 07:38:43,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=869, Invalid=3421, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 07:38:43,819 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 330 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:43,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 198 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:38:43,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38267 states. [2022-01-18 07:38:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38267 to 25874. [2022-01-18 07:38:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25874 states, 25873 states have (on average 4.005488346925366) internal successors, (103634), 25873 states have internal predecessors, (103634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:44,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25874 states to 25874 states and 103634 transitions. [2022-01-18 07:38:44,792 INFO L78 Accepts]: Start accepts. Automaton has 25874 states and 103634 transitions. Word has length 28 [2022-01-18 07:38:44,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:44,792 INFO L470 AbstractCegarLoop]: Abstraction has 25874 states and 103634 transitions. [2022-01-18 07:38:44,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 25874 states and 103634 transitions. [2022-01-18 07:38:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:44,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:44,841 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:44,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (186)] Ended with exit code 0 [2022-01-18 07:38:45,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,186 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:45,041 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:45,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:45,041 INFO L85 PathProgramCache]: Analyzing trace with hash -792148482, now seen corresponding path program 72 times [2022-01-18 07:38:45,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:45,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743224115] [2022-01-18 07:38:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:45,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:45,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:45,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743224115] [2022-01-18 07:38:45,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743224115] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:45,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500504890] [2022-01-18 07:38:45,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:38:45,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:45,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:45,076 INFO L229 MonitoredProcess]: Starting monitored process 187 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:45,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Waiting until timeout for monitored process [2022-01-18 07:38:45,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:38:45,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:45,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:45,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:45,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:45,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:45,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500504890] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:45,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:45,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 16 [2022-01-18 07:38:45,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455497281] [2022-01-18 07:38:45,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:45,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:38:45,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:38:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:38:45,245 INFO L87 Difference]: Start difference. First operand 25874 states and 103634 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:46,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:46,050 INFO L93 Difference]: Finished difference Result 34529 states and 136320 transitions. [2022-01-18 07:38:46,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 07:38:46,050 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:46,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:46,172 INFO L225 Difference]: With dead ends: 34529 [2022-01-18 07:38:46,173 INFO L226 Difference]: Without dead ends: 34466 [2022-01-18 07:38:46,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=392, Invalid=1168, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 07:38:46,173 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 207 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:46,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 233 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:38:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34466 states. [2022-01-18 07:38:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34466 to 30827. [2022-01-18 07:38:46,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30827 states, 30826 states have (on average 4.036397845974178) internal successors, (124426), 30826 states have internal predecessors, (124426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:47,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30827 states to 30827 states and 124426 transitions. [2022-01-18 07:38:47,024 INFO L78 Accepts]: Start accepts. Automaton has 30827 states and 124426 transitions. Word has length 28 [2022-01-18 07:38:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:47,024 INFO L470 AbstractCegarLoop]: Abstraction has 30827 states and 124426 transitions. [2022-01-18 07:38:47,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 16 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:47,024 INFO L276 IsEmpty]: Start isEmpty. Operand 30827 states and 124426 transitions. [2022-01-18 07:38:47,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:47,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:47,232 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:47,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (187)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:47,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,187 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:47,443 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:47,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash 246053032, now seen corresponding path program 73 times [2022-01-18 07:38:47,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:47,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694332835] [2022-01-18 07:38:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:47,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:47,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:47,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694332835] [2022-01-18 07:38:47,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694332835] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:47,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423286119] [2022-01-18 07:38:47,480 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:38:47,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:47,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:47,481 INFO L229 MonitoredProcess]: Starting monitored process 188 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:47,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Waiting until timeout for monitored process [2022-01-18 07:38:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:47,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:47,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:47,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:47,632 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:47,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423286119] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:47,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:47,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:38:47,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426054198] [2022-01-18 07:38:47,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:47,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:38:47,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:38:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:38:47,633 INFO L87 Difference]: Start difference. First operand 30827 states and 124426 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:48,375 INFO L93 Difference]: Finished difference Result 44298 states and 173391 transitions. [2022-01-18 07:38:48,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:38:48,375 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:48,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:48,551 INFO L225 Difference]: With dead ends: 44298 [2022-01-18 07:38:48,551 INFO L226 Difference]: Without dead ends: 44290 [2022-01-18 07:38:48,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=1743, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 07:38:48,552 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 375 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:48,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 147 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:38:48,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44290 states. [2022-01-18 07:38:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44290 to 30719. [2022-01-18 07:38:49,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30719 states, 30718 states have (on average 4.038348850836643) internal successors, (124050), 30718 states have internal predecessors, (124050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30719 states to 30719 states and 124050 transitions. [2022-01-18 07:38:49,705 INFO L78 Accepts]: Start accepts. Automaton has 30719 states and 124050 transitions. Word has length 28 [2022-01-18 07:38:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:49,705 INFO L470 AbstractCegarLoop]: Abstraction has 30719 states and 124050 transitions. [2022-01-18 07:38:49,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:49,705 INFO L276 IsEmpty]: Start isEmpty. Operand 30719 states and 124050 transitions. [2022-01-18 07:38:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:49,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:49,766 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:49,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (188)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:49,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-01-18 07:38:49,967 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash 843389690, now seen corresponding path program 74 times [2022-01-18 07:38:49,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:49,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893799509] [2022-01-18 07:38:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:49,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:50,008 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:50,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:50,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893799509] [2022-01-18 07:38:50,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893799509] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:50,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215402084] [2022-01-18 07:38:50,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:38:50,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:50,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:50,010 INFO L229 MonitoredProcess]: Starting monitored process 189 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:50,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Waiting until timeout for monitored process [2022-01-18 07:38:50,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:38:50,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:50,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:50,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:50,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:50,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215402084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:50,157 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:50,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-01-18 07:38:50,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446992601] [2022-01-18 07:38:50,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:50,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:38:50,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:38:50,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:38:50,158 INFO L87 Difference]: Start difference. First operand 30719 states and 124050 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:51,065 INFO L93 Difference]: Finished difference Result 44154 states and 172939 transitions. [2022-01-18 07:38:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 07:38:51,066 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:51,227 INFO L225 Difference]: With dead ends: 44154 [2022-01-18 07:38:51,228 INFO L226 Difference]: Without dead ends: 44142 [2022-01-18 07:38:51,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=552, Invalid=1898, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 07:38:51,228 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 353 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:51,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 187 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:38:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44142 states. [2022-01-18 07:38:52,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44142 to 30517. [2022-01-18 07:38:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30517 states, 30516 states have (on average 4.044599554332153) internal successors, (123425), 30516 states have internal predecessors, (123425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:52,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30517 states to 30517 states and 123425 transitions. [2022-01-18 07:38:52,313 INFO L78 Accepts]: Start accepts. Automaton has 30517 states and 123425 transitions. Word has length 28 [2022-01-18 07:38:52,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:52,313 INFO L470 AbstractCegarLoop]: Abstraction has 30517 states and 123425 transitions. [2022-01-18 07:38:52,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand 30517 states and 123425 transitions. [2022-01-18 07:38:52,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:52,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:52,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:52,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (189)] Ended with exit code 0 [2022-01-18 07:38:52,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 189 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-01-18 07:38:52,581 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:52,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash -282838420, now seen corresponding path program 115 times [2022-01-18 07:38:52,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:52,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253815507] [2022-01-18 07:38:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:52,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:52,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:52,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:52,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253815507] [2022-01-18 07:38:52,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253815507] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:52,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797809680] [2022-01-18 07:38:52,616 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:38:52,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:52,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:52,617 INFO L229 MonitoredProcess]: Starting monitored process 190 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:52,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Waiting until timeout for monitored process [2022-01-18 07:38:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:52,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:38:52,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:52,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:52,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797809680] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:52,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:52,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2022-01-18 07:38:52,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441960703] [2022-01-18 07:38:52,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:52,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:38:52,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:52,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:38:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:38:52,802 INFO L87 Difference]: Start difference. First operand 30517 states and 123425 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:54,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:54,231 INFO L93 Difference]: Finished difference Result 60203 states and 227427 transitions. [2022-01-18 07:38:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 07:38:54,232 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:54,455 INFO L225 Difference]: With dead ends: 60203 [2022-01-18 07:38:54,455 INFO L226 Difference]: Without dead ends: 60203 [2022-01-18 07:38:54,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1449, Invalid=3663, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 07:38:54,456 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 343 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:54,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 259 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:38:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60203 states. [2022-01-18 07:38:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60203 to 39354. [2022-01-18 07:38:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39354 states, 39353 states have (on average 4.053744314283536) internal successors, (159527), 39353 states have internal predecessors, (159527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39354 states to 39354 states and 159527 transitions. [2022-01-18 07:38:55,899 INFO L78 Accepts]: Start accepts. Automaton has 39354 states and 159527 transitions. Word has length 28 [2022-01-18 07:38:55,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:55,899 INFO L470 AbstractCegarLoop]: Abstraction has 39354 states and 159527 transitions. [2022-01-18 07:38:55,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 39354 states and 159527 transitions. [2022-01-18 07:38:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:55,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:55,969 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:55,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (190)] Ended with exit code 0 [2022-01-18 07:38:56,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2022-01-18 07:38:56,170 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:56,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:56,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1320645726, now seen corresponding path program 116 times [2022-01-18 07:38:56,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:56,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407967758] [2022-01-18 07:38:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:56,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:56,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:56,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407967758] [2022-01-18 07:38:56,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407967758] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:56,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146979055] [2022-01-18 07:38:56,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:38:56,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:56,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:56,210 INFO L229 MonitoredProcess]: Starting monitored process 191 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:56,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Waiting until timeout for monitored process [2022-01-18 07:38:56,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:38:56,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:56,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:38:56,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:56,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:56,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146979055] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:56,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:56,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2022-01-18 07:38:56,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889182789] [2022-01-18 07:38:56,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:56,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:38:56,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:38:56,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:38:56,351 INFO L87 Difference]: Start difference. First operand 39354 states and 159527 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:57,147 INFO L93 Difference]: Finished difference Result 57763 states and 228986 transitions. [2022-01-18 07:38:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 07:38:57,148 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:38:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:57,380 INFO L225 Difference]: With dead ends: 57763 [2022-01-18 07:38:57,380 INFO L226 Difference]: Without dead ends: 57691 [2022-01-18 07:38:57,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-01-18 07:38:57,381 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 188 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:57,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 139 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:38:57,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57691 states. [2022-01-18 07:38:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57691 to 45957. [2022-01-18 07:38:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45957 states, 45956 states have (on average 4.048024197058056) internal successors, (186031), 45956 states have internal predecessors, (186031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45957 states to 45957 states and 186031 transitions. [2022-01-18 07:38:59,160 INFO L78 Accepts]: Start accepts. Automaton has 45957 states and 186031 transitions. Word has length 28 [2022-01-18 07:38:59,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:59,160 INFO L470 AbstractCegarLoop]: Abstraction has 45957 states and 186031 transitions. [2022-01-18 07:38:59,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:59,161 INFO L276 IsEmpty]: Start isEmpty. Operand 45957 states and 186031 transitions. [2022-01-18 07:38:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:38:59,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:59,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:59,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (191)] Forceful destruction successful, exit code 0 [2022-01-18 07:38:59,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,191 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:59,445 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:38:59,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash 589421016, now seen corresponding path program 117 times [2022-01-18 07:38:59,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:59,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566354391] [2022-01-18 07:38:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:59,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:59,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:59,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566354391] [2022-01-18 07:38:59,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566354391] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715232250] [2022-01-18 07:38:59,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:38:59,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:59,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:59,480 INFO L229 MonitoredProcess]: Starting monitored process 192 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:38:59,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Waiting until timeout for monitored process [2022-01-18 07:38:59,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:38:59,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:59,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:38:59,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:59,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:59,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715232250] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:59,617 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:59,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 07:38:59,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922378038] [2022-01-18 07:38:59,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:59,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 07:38:59,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:59,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 07:38:59,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:38:59,618 INFO L87 Difference]: Start difference. First operand 45957 states and 186031 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:00,130 INFO L93 Difference]: Finished difference Result 51952 states and 204228 transitions. [2022-01-18 07:39:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 07:39:00,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:00,320 INFO L225 Difference]: With dead ends: 51952 [2022-01-18 07:39:00,320 INFO L226 Difference]: Without dead ends: 51952 [2022-01-18 07:39:00,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 49 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:39:00,321 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:00,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 182 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:00,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51952 states. [2022-01-18 07:39:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51952 to 45171. [2022-01-18 07:39:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45171 states, 45170 states have (on average 4.038454726588443) internal successors, (182417), 45170 states have internal predecessors, (182417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:01,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45171 states to 45171 states and 182417 transitions. [2022-01-18 07:39:01,754 INFO L78 Accepts]: Start accepts. Automaton has 45171 states and 182417 transitions. Word has length 28 [2022-01-18 07:39:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:01,754 INFO L470 AbstractCegarLoop]: Abstraction has 45171 states and 182417 transitions. [2022-01-18 07:39:01,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:01,754 INFO L276 IsEmpty]: Start isEmpty. Operand 45171 states and 182417 transitions. [2022-01-18 07:39:01,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:01,834 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:01,834 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:01,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (192)] Ended with exit code 0 [2022-01-18 07:39:02,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,192 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:02,035 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash -362260422, now seen corresponding path program 118 times [2022-01-18 07:39:02,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:02,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871475107] [2022-01-18 07:39:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:02,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:02,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:02,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871475107] [2022-01-18 07:39:02,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871475107] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:02,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251828855] [2022-01-18 07:39:02,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:39:02,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:02,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:02,074 INFO L229 MonitoredProcess]: Starting monitored process 193 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:02,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Waiting until timeout for monitored process [2022-01-18 07:39:02,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:39:02,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:02,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:02,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:02,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:02,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251828855] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:02,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:02,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 20 [2022-01-18 07:39:02,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572130809] [2022-01-18 07:39:02,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:02,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 07:39:02,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:02,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 07:39:02,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-01-18 07:39:02,304 INFO L87 Difference]: Start difference. First operand 45171 states and 182417 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:05,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:05,240 INFO L93 Difference]: Finished difference Result 77610 states and 296031 transitions. [2022-01-18 07:39:05,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-18 07:39:05,240 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:05,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:05,571 INFO L225 Difference]: With dead ends: 77610 [2022-01-18 07:39:05,571 INFO L226 Difference]: Without dead ends: 77610 [2022-01-18 07:39:05,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9696 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=4270, Invalid=17486, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 07:39:05,573 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 630 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:05,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 425 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:39:05,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77610 states. [2022-01-18 07:39:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77610 to 45207. [2022-01-18 07:39:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45207 states, 45206 states have (on average 4.037804716188116) internal successors, (182533), 45206 states have internal predecessors, (182533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:07,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45207 states to 45207 states and 182533 transitions. [2022-01-18 07:39:07,561 INFO L78 Accepts]: Start accepts. Automaton has 45207 states and 182533 transitions. Word has length 28 [2022-01-18 07:39:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:07,561 INFO L470 AbstractCegarLoop]: Abstraction has 45207 states and 182533 transitions. [2022-01-18 07:39:07,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 45207 states and 182533 transitions. [2022-01-18 07:39:07,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:07,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:07,640 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:07,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (193)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:07,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,193 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:07,842 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:07,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:07,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1338579266, now seen corresponding path program 119 times [2022-01-18 07:39:07,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:07,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879041042] [2022-01-18 07:39:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:07,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:07,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879041042] [2022-01-18 07:39:07,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879041042] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:07,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826679031] [2022-01-18 07:39:07,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:39:07,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:07,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:07,882 INFO L229 MonitoredProcess]: Starting monitored process 194 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:07,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Waiting until timeout for monitored process [2022-01-18 07:39:07,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:39:07,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:07,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:07,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:08,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:08,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:08,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826679031] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:08,123 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:08,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:39:08,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082414488] [2022-01-18 07:39:08,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:08,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:39:08,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:08,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:39:08,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:39:08,124 INFO L87 Difference]: Start difference. First operand 45207 states and 182533 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:12,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:12,872 INFO L93 Difference]: Finished difference Result 94449 states and 358545 transitions. [2022-01-18 07:39:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2022-01-18 07:39:12,872 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:13,239 INFO L225 Difference]: With dead ends: 94449 [2022-01-18 07:39:13,239 INFO L226 Difference]: Without dead ends: 94449 [2022-01-18 07:39:13,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25291 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9520, Invalid=43610, Unknown=0, NotChecked=0, Total=53130 [2022-01-18 07:39:13,242 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 992 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:13,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 645 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:39:13,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94449 states. [2022-01-18 07:39:15,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94449 to 45179. [2022-01-18 07:39:15,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45179 states, 45178 states have (on average 4.0393554384877595) internal successors, (182490), 45178 states have internal predecessors, (182490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45179 states to 45179 states and 182490 transitions. [2022-01-18 07:39:15,471 INFO L78 Accepts]: Start accepts. Automaton has 45179 states and 182490 transitions. Word has length 28 [2022-01-18 07:39:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:15,471 INFO L470 AbstractCegarLoop]: Abstraction has 45179 states and 182490 transitions. [2022-01-18 07:39:15,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:15,471 INFO L276 IsEmpty]: Start isEmpty. Operand 45179 states and 182490 transitions. [2022-01-18 07:39:15,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:15,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:15,542 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:15,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (194)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:15,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2022-01-18 07:39:15,743 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:15,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash -771627186, now seen corresponding path program 120 times [2022-01-18 07:39:15,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:15,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691227009] [2022-01-18 07:39:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:15,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:15,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:15,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691227009] [2022-01-18 07:39:15,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691227009] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:15,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260099668] [2022-01-18 07:39:15,781 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:39:15,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:15,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:15,782 INFO L229 MonitoredProcess]: Starting monitored process 195 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:15,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Waiting until timeout for monitored process [2022-01-18 07:39:15,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:39:15,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:15,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:15,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:16,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:16,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260099668] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:16,243 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:16,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2022-01-18 07:39:16,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501149928] [2022-01-18 07:39:16,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:16,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 07:39:16,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 07:39:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:39:16,244 INFO L87 Difference]: Start difference. First operand 45179 states and 182490 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:18,828 INFO L93 Difference]: Finished difference Result 82332 states and 312702 transitions. [2022-01-18 07:39:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-18 07:39:18,829 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:19,340 INFO L225 Difference]: With dead ends: 82332 [2022-01-18 07:39:19,341 INFO L226 Difference]: Without dead ends: 82332 [2022-01-18 07:39:19,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4890, Invalid=17162, Unknown=0, NotChecked=0, Total=22052 [2022-01-18 07:39:19,341 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 847 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:19,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 493 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:39:19,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82332 states. [2022-01-18 07:39:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82332 to 44519. [2022-01-18 07:39:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44519 states, 44518 states have (on average 4.029583539242553) internal successors, (179389), 44518 states have internal predecessors, (179389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44519 states to 44519 states and 179389 transitions. [2022-01-18 07:39:21,277 INFO L78 Accepts]: Start accepts. Automaton has 44519 states and 179389 transitions. Word has length 28 [2022-01-18 07:39:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:21,277 INFO L470 AbstractCegarLoop]: Abstraction has 44519 states and 179389 transitions. [2022-01-18 07:39:21,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 44519 states and 179389 transitions. [2022-01-18 07:39:21,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:21,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:21,344 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:21,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (195)] Ended with exit code 0 [2022-01-18 07:39:21,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,195 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:21,545 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:21,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:21,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1545282486, now seen corresponding path program 121 times [2022-01-18 07:39:21,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:21,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311083489] [2022-01-18 07:39:21,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:21,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:21,575 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:21,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:21,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311083489] [2022-01-18 07:39:21,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311083489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:21,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585277150] [2022-01-18 07:39:21,576 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:39:21,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:21,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:21,576 INFO L229 MonitoredProcess]: Starting monitored process 196 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:21,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Waiting until timeout for monitored process [2022-01-18 07:39:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:21,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:21,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:21,669 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:21,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:21,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585277150] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:21,754 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:21,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2022-01-18 07:39:21,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215629122] [2022-01-18 07:39:21,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:21,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:39:21,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:21,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:39:21,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:21,755 INFO L87 Difference]: Start difference. First operand 44519 states and 179389 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:22,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:22,272 INFO L93 Difference]: Finished difference Result 64467 states and 251495 transitions. [2022-01-18 07:39:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 07:39:22,272 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:22,486 INFO L225 Difference]: With dead ends: 64467 [2022-01-18 07:39:22,486 INFO L226 Difference]: Without dead ends: 64445 [2022-01-18 07:39:22,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=203, Invalid=349, Unknown=0, NotChecked=0, Total=552 [2022-01-18 07:39:22,486 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 264 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:22,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 77 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:39:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64445 states. [2022-01-18 07:39:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64445 to 44756. [2022-01-18 07:39:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44756 states, 44755 states have (on average 4.031348452686851) internal successors, (180423), 44755 states have internal predecessors, (180423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:23,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44756 states to 44756 states and 180423 transitions. [2022-01-18 07:39:23,947 INFO L78 Accepts]: Start accepts. Automaton has 44756 states and 180423 transitions. Word has length 28 [2022-01-18 07:39:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:23,947 INFO L470 AbstractCegarLoop]: Abstraction has 44756 states and 180423 transitions. [2022-01-18 07:39:23,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 44756 states and 180423 transitions. [2022-01-18 07:39:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:24,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:24,014 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:24,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (196)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:24,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,196 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:24,214 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1927343648, now seen corresponding path program 122 times [2022-01-18 07:39:24,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:24,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276385761] [2022-01-18 07:39:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:24,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:24,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:24,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276385761] [2022-01-18 07:39:24,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276385761] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:24,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775962806] [2022-01-18 07:39:24,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:39:24,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:24,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:24,244 INFO L229 MonitoredProcess]: Starting monitored process 197 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:24,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Waiting until timeout for monitored process [2022-01-18 07:39:24,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:24,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:24,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:24,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:39:24,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:24,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775962806] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:24,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:24,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 15 [2022-01-18 07:39:24,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293549866] [2022-01-18 07:39:24,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:24,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:39:24,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:24,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:39:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:24,413 INFO L87 Difference]: Start difference. First operand 44756 states and 180423 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:25,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:25,121 INFO L93 Difference]: Finished difference Result 77273 states and 292896 transitions. [2022-01-18 07:39:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:39:25,121 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:25,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:25,647 INFO L225 Difference]: With dead ends: 77273 [2022-01-18 07:39:25,647 INFO L226 Difference]: Without dead ends: 77273 [2022-01-18 07:39:25,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=462, Invalid=944, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:39:25,647 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 333 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:25,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 124 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77273 states. [2022-01-18 07:39:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77273 to 44235. [2022-01-18 07:39:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44235 states, 44234 states have (on average 4.0232626486413166) internal successors, (177965), 44234 states have internal predecessors, (177965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44235 states to 44235 states and 177965 transitions. [2022-01-18 07:39:27,092 INFO L78 Accepts]: Start accepts. Automaton has 44235 states and 177965 transitions. Word has length 28 [2022-01-18 07:39:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:27,092 INFO L470 AbstractCegarLoop]: Abstraction has 44235 states and 177965 transitions. [2022-01-18 07:39:27,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 44235 states and 177965 transitions. [2022-01-18 07:39:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:27,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:27,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:27,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (197)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:27,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,197 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:27,359 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:27,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1969871176, now seen corresponding path program 123 times [2022-01-18 07:39:27,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:27,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384078328] [2022-01-18 07:39:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:27,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:27,395 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:27,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:27,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384078328] [2022-01-18 07:39:27,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384078328] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:27,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804482443] [2022-01-18 07:39:27,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:39:27,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:27,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:27,396 INFO L229 MonitoredProcess]: Starting monitored process 198 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:27,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Waiting until timeout for monitored process [2022-01-18 07:39:27,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:39:27,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:27,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:27,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:27,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:27,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:27,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804482443] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:27,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:27,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:39:27,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877362612] [2022-01-18 07:39:27,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:27,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:39:27,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:27,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:39:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:39:27,579 INFO L87 Difference]: Start difference. First operand 44235 states and 177965 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:29,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:29,598 INFO L93 Difference]: Finished difference Result 68843 states and 264341 transitions. [2022-01-18 07:39:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 07:39:29,598 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:29,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:29,819 INFO L225 Difference]: With dead ends: 68843 [2022-01-18 07:39:29,819 INFO L226 Difference]: Without dead ends: 68843 [2022-01-18 07:39:29,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6038 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2870, Invalid=11172, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 07:39:29,820 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 586 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:29,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 338 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:39:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68843 states. [2022-01-18 07:39:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68843 to 44297. [2022-01-18 07:39:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44297 states, 44296 states have (on average 4.022259346216362) internal successors, (178170), 44296 states have internal predecessors, (178170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44297 states to 44297 states and 178170 transitions. [2022-01-18 07:39:31,437 INFO L78 Accepts]: Start accepts. Automaton has 44297 states and 178170 transitions. Word has length 28 [2022-01-18 07:39:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:31,438 INFO L470 AbstractCegarLoop]: Abstraction has 44297 states and 178170 transitions. [2022-01-18 07:39:31,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 44297 states and 178170 transitions. [2022-01-18 07:39:31,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:31,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:31,501 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:31,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (198)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:31,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,198 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:31,701 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:31,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:31,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1540182026, now seen corresponding path program 124 times [2022-01-18 07:39:31,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:31,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101127792] [2022-01-18 07:39:31,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:31,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:31,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:31,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101127792] [2022-01-18 07:39:31,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101127792] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:31,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503615582] [2022-01-18 07:39:31,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:39:31,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:31,739 INFO L229 MonitoredProcess]: Starting monitored process 199 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:31,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Waiting until timeout for monitored process [2022-01-18 07:39:31,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:39:31,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:31,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:31,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:31,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:31,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503615582] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:31,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:31,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:39:31,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648783411] [2022-01-18 07:39:31,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:31,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:39:31,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:39:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:39:31,936 INFO L87 Difference]: Start difference. First operand 44297 states and 178170 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:34,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:34,009 INFO L93 Difference]: Finished difference Result 70769 states and 270388 transitions. [2022-01-18 07:39:34,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 07:39:34,009 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:34,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:34,271 INFO L225 Difference]: With dead ends: 70769 [2022-01-18 07:39:34,272 INFO L226 Difference]: Without dead ends: 70769 [2022-01-18 07:39:34,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6812 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=3012, Invalid=12990, Unknown=0, NotChecked=0, Total=16002 [2022-01-18 07:39:34,272 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 820 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:34,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 325 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:39:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70769 states. [2022-01-18 07:39:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70769 to 44871. [2022-01-18 07:39:35,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44871 states, 44870 states have (on average 4.010541564519723) internal successors, (179953), 44870 states have internal predecessors, (179953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44871 states to 44871 states and 179953 transitions. [2022-01-18 07:39:36,016 INFO L78 Accepts]: Start accepts. Automaton has 44871 states and 179953 transitions. Word has length 28 [2022-01-18 07:39:36,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:36,016 INFO L470 AbstractCegarLoop]: Abstraction has 44871 states and 179953 transitions. [2022-01-18 07:39:36,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand 44871 states and 179953 transitions. [2022-01-18 07:39:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:36,102 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:36,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:36,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (199)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:36,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 199 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2022-01-18 07:39:36,303 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1585003168, now seen corresponding path program 125 times [2022-01-18 07:39:36,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:36,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045091380] [2022-01-18 07:39:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:36,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:36,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:36,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045091380] [2022-01-18 07:39:36,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045091380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:36,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520814584] [2022-01-18 07:39:36,342 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:39:36,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:36,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:36,343 INFO L229 MonitoredProcess]: Starting monitored process 200 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:36,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Waiting until timeout for monitored process [2022-01-18 07:39:36,364 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:39:36,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:36,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:36,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:36,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:36,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:36,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520814584] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:36,522 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:36,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 18 [2022-01-18 07:39:36,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221042964] [2022-01-18 07:39:36,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:36,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:39:36,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:36,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:39:36,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:39:36,523 INFO L87 Difference]: Start difference. First operand 44871 states and 179953 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:38,012 INFO L93 Difference]: Finished difference Result 69361 states and 266662 transitions. [2022-01-18 07:39:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 07:39:38,012 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:38,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:38,232 INFO L225 Difference]: With dead ends: 69361 [2022-01-18 07:39:38,232 INFO L226 Difference]: Without dead ends: 69353 [2022-01-18 07:39:38,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3844 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2037, Invalid=7863, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 07:39:38,233 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 747 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:38,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 336 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:39:38,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69353 states. [2022-01-18 07:39:39,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69353 to 44732. [2022-01-18 07:39:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44732 states, 44731 states have (on average 4.011781538530326) internal successors, (179451), 44731 states have internal predecessors, (179451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44732 states to 44732 states and 179451 transitions. [2022-01-18 07:39:39,844 INFO L78 Accepts]: Start accepts. Automaton has 44732 states and 179451 transitions. Word has length 28 [2022-01-18 07:39:39,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:39,844 INFO L470 AbstractCegarLoop]: Abstraction has 44732 states and 179451 transitions. [2022-01-18 07:39:39,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 44732 states and 179451 transitions. [2022-01-18 07:39:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:39,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:39,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:39,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (200)] Ended with exit code 0 [2022-01-18 07:39:40,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2022-01-18 07:39:40,111 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:40,111 INFO L85 PathProgramCache]: Analyzing trace with hash 838591832, now seen corresponding path program 126 times [2022-01-18 07:39:40,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:40,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940699630] [2022-01-18 07:39:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:40,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:40,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:40,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940699630] [2022-01-18 07:39:40,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940699630] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:40,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27720569] [2022-01-18 07:39:40,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:39:40,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:40,140 INFO L229 MonitoredProcess]: Starting monitored process 201 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:40,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Waiting until timeout for monitored process [2022-01-18 07:39:40,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:39:40,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:40,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:40,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:40,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 07:39:40,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:40,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27720569] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:40,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:40,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 13 [2022-01-18 07:39:40,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857059065] [2022-01-18 07:39:40,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:40,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:39:40,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:40,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:39:40,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:39:40,292 INFO L87 Difference]: Start difference. First operand 44732 states and 179451 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:40,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:40,799 INFO L93 Difference]: Finished difference Result 57230 states and 219298 transitions. [2022-01-18 07:39:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 07:39:40,799 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:41,251 INFO L225 Difference]: With dead ends: 57230 [2022-01-18 07:39:41,251 INFO L226 Difference]: Without dead ends: 57230 [2022-01-18 07:39:41,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2022-01-18 07:39:41,251 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 201 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:41,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 123 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:39:41,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57230 states. [2022-01-18 07:39:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57230 to 44768. [2022-01-18 07:39:42,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44768 states, 44767 states have (on average 4.010521142806085) internal successors, (179539), 44767 states have internal predecessors, (179539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44768 states to 44768 states and 179539 transitions. [2022-01-18 07:39:42,431 INFO L78 Accepts]: Start accepts. Automaton has 44768 states and 179539 transitions. Word has length 28 [2022-01-18 07:39:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:42,431 INFO L470 AbstractCegarLoop]: Abstraction has 44768 states and 179539 transitions. [2022-01-18 07:39:42,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:42,431 INFO L276 IsEmpty]: Start isEmpty. Operand 44768 states and 179539 transitions. [2022-01-18 07:39:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:42,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:42,498 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:42,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (201)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:42,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-01-18 07:39:42,698 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:42,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:42,699 INFO L85 PathProgramCache]: Analyzing trace with hash 210580514, now seen corresponding path program 127 times [2022-01-18 07:39:42,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:42,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998346358] [2022-01-18 07:39:42,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:42,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:42,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998346358] [2022-01-18 07:39:42,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998346358] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305121259] [2022-01-18 07:39:42,734 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:39:42,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:42,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:42,735 INFO L229 MonitoredProcess]: Starting monitored process 202 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:42,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Waiting until timeout for monitored process [2022-01-18 07:39:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:42,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:42,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:39:42,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:42,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305121259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:42,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:42,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-01-18 07:39:42,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513933127] [2022-01-18 07:39:42,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:42,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:39:42,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:42,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:39:42,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:39:42,896 INFO L87 Difference]: Start difference. First operand 44768 states and 179539 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:44,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:44,521 INFO L93 Difference]: Finished difference Result 68624 states and 261728 transitions. [2022-01-18 07:39:44,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 07:39:44,521 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:44,746 INFO L225 Difference]: With dead ends: 68624 [2022-01-18 07:39:44,746 INFO L226 Difference]: Without dead ends: 68624 [2022-01-18 07:39:44,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3376 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1732, Invalid=6640, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 07:39:44,746 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 559 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 868 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:44,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 315 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 868 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:39:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68624 states. [2022-01-18 07:39:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68624 to 47094. [2022-01-18 07:39:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47094 states, 47093 states have (on average 4.014184698362814) internal successors, (189040), 47093 states have internal predecessors, (189040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47094 states to 47094 states and 189040 transitions. [2022-01-18 07:39:46,218 INFO L78 Accepts]: Start accepts. Automaton has 47094 states and 189040 transitions. Word has length 28 [2022-01-18 07:39:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:46,218 INFO L470 AbstractCegarLoop]: Abstraction has 47094 states and 189040 transitions. [2022-01-18 07:39:46,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:46,218 INFO L276 IsEmpty]: Start isEmpty. Operand 47094 states and 189040 transitions. [2022-01-18 07:39:46,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:46,289 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:46,289 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:46,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (202)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:46,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-01-18 07:39:46,490 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:46,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1629191814, now seen corresponding path program 128 times [2022-01-18 07:39:46,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:46,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189749739] [2022-01-18 07:39:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:46,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:46,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:46,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189749739] [2022-01-18 07:39:46,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189749739] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:46,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725678957] [2022-01-18 07:39:46,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:39:46,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:46,526 INFO L229 MonitoredProcess]: Starting monitored process 203 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:46,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Waiting until timeout for monitored process [2022-01-18 07:39:46,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:46,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:46,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:46,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 07:39:46,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:46,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725678957] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:46,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:46,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 16 [2022-01-18 07:39:46,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613681134] [2022-01-18 07:39:46,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:46,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:39:46,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:46,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:39:46,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:39:46,684 INFO L87 Difference]: Start difference. First operand 47094 states and 189040 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:47,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:47,945 INFO L93 Difference]: Finished difference Result 64850 states and 251594 transitions. [2022-01-18 07:39:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 07:39:47,945 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:47,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:48,178 INFO L225 Difference]: With dead ends: 64850 [2022-01-18 07:39:48,178 INFO L226 Difference]: Without dead ends: 64826 [2022-01-18 07:39:48,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=911, Invalid=3511, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 07:39:48,179 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 566 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:48,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 192 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:39:48,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64826 states. [2022-01-18 07:39:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64826 to 47454. [2022-01-18 07:39:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47454 states, 47453 states have (on average 4.008176511495585) internal successors, (190200), 47453 states have internal predecessors, (190200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47454 states to 47454 states and 190200 transitions. [2022-01-18 07:39:49,831 INFO L78 Accepts]: Start accepts. Automaton has 47454 states and 190200 transitions. Word has length 28 [2022-01-18 07:39:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:49,831 INFO L470 AbstractCegarLoop]: Abstraction has 47454 states and 190200 transitions. [2022-01-18 07:39:49,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:49,831 INFO L276 IsEmpty]: Start isEmpty. Operand 47454 states and 190200 transitions. [2022-01-18 07:39:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:49,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:49,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:49,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (203)] Ended with exit code 0 [2022-01-18 07:39:50,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,203 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:50,102 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:50,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2034992166, now seen corresponding path program 129 times [2022-01-18 07:39:50,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:50,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159971996] [2022-01-18 07:39:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:50,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:50,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:50,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159971996] [2022-01-18 07:39:50,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159971996] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:50,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700234244] [2022-01-18 07:39:50,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:39:50,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:50,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:50,131 INFO L229 MonitoredProcess]: Starting monitored process 204 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:50,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Waiting until timeout for monitored process [2022-01-18 07:39:50,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:39:50,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:50,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:50,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:50,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:50,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700234244] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:50,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:50,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-01-18 07:39:50,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471805224] [2022-01-18 07:39:50,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:50,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 07:39:50,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:50,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 07:39:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:39:50,272 INFO L87 Difference]: Start difference. First operand 47454 states and 190200 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:50,742 INFO L93 Difference]: Finished difference Result 55800 states and 217559 transitions. [2022-01-18 07:39:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 07:39:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:50,918 INFO L225 Difference]: With dead ends: 55800 [2022-01-18 07:39:50,918 INFO L226 Difference]: Without dead ends: 55800 [2022-01-18 07:39:50,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:39:50,918 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 167 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:50,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 97 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:39:50,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55800 states. [2022-01-18 07:39:51,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55800 to 48282. [2022-01-18 07:39:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48282 states, 48281 states have (on average 4.0046187941426235) internal successors, (193347), 48281 states have internal predecessors, (193347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48282 states to 48282 states and 193347 transitions. [2022-01-18 07:39:52,463 INFO L78 Accepts]: Start accepts. Automaton has 48282 states and 193347 transitions. Word has length 28 [2022-01-18 07:39:52,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:52,463 INFO L470 AbstractCegarLoop]: Abstraction has 48282 states and 193347 transitions. [2022-01-18 07:39:52,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:52,463 INFO L276 IsEmpty]: Start isEmpty. Operand 48282 states and 193347 transitions. [2022-01-18 07:39:52,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:52,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:52,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:52,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (204)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:52,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2022-01-18 07:39:52,783 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1816313562, now seen corresponding path program 130 times [2022-01-18 07:39:52,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:52,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595604044] [2022-01-18 07:39:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:52,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:52,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:52,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595604044] [2022-01-18 07:39:52,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595604044] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:52,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329595789] [2022-01-18 07:39:52,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:39:52,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:52,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:52,826 INFO L229 MonitoredProcess]: Starting monitored process 205 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:52,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Waiting until timeout for monitored process [2022-01-18 07:39:52,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:39:52,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:52,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:52,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:52,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:53,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329595789] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:53,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:53,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-01-18 07:39:53,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294670907] [2022-01-18 07:39:53,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:53,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:39:53,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:53,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:39:53,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:53,034 INFO L87 Difference]: Start difference. First operand 48282 states and 193347 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:54,125 INFO L93 Difference]: Finished difference Result 68374 states and 263131 transitions. [2022-01-18 07:39:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 07:39:54,126 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:54,341 INFO L225 Difference]: With dead ends: 68374 [2022-01-18 07:39:54,341 INFO L226 Difference]: Without dead ends: 68374 [2022-01-18 07:39:54,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1427 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=903, Invalid=3129, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 07:39:54,342 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 353 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:54,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 315 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:39:54,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68374 states. [2022-01-18 07:39:55,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68374 to 50506. [2022-01-18 07:39:55,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50506 states, 50505 states have (on average 3.9746361746361747) internal successors, (200739), 50505 states have internal predecessors, (200739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50506 states to 50506 states and 200739 transitions. [2022-01-18 07:39:56,041 INFO L78 Accepts]: Start accepts. Automaton has 50506 states and 200739 transitions. Word has length 28 [2022-01-18 07:39:56,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:56,041 INFO L470 AbstractCegarLoop]: Abstraction has 50506 states and 200739 transitions. [2022-01-18 07:39:56,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 50506 states and 200739 transitions. [2022-01-18 07:39:56,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:56,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:56,120 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:56,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (205)] Ended with exit code 0 [2022-01-18 07:39:56,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 205 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable205 [2022-01-18 07:39:56,320 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:56,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:56,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1076220610, now seen corresponding path program 131 times [2022-01-18 07:39:56,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:56,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073342822] [2022-01-18 07:39:56,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:56,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:56,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:56,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:56,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073342822] [2022-01-18 07:39:56,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073342822] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:56,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672884204] [2022-01-18 07:39:56,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:39:56,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:56,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:56,355 INFO L229 MonitoredProcess]: Starting monitored process 206 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:56,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Waiting until timeout for monitored process [2022-01-18 07:39:56,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 07:39:56,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:56,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:56,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:56,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:56,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:56,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672884204] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:56,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:56,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:39:56,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849363618] [2022-01-18 07:39:56,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:56,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:39:56,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:56,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:39:56,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:39:56,514 INFO L87 Difference]: Start difference. First operand 50506 states and 200739 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:57,364 INFO L93 Difference]: Finished difference Result 67321 states and 260301 transitions. [2022-01-18 07:39:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 07:39:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:39:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:57,907 INFO L225 Difference]: With dead ends: 67321 [2022-01-18 07:39:57,907 INFO L226 Difference]: Without dead ends: 67309 [2022-01-18 07:39:57,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=608, Invalid=2044, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 07:39:57,908 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 368 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:57,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 255 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:39:57,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67309 states. [2022-01-18 07:39:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67309 to 50308. [2022-01-18 07:39:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50308 states, 50307 states have (on average 3.978372791062874) internal successors, (200140), 50307 states have internal predecessors, (200140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50308 states to 50308 states and 200140 transitions. [2022-01-18 07:39:59,449 INFO L78 Accepts]: Start accepts. Automaton has 50308 states and 200140 transitions. Word has length 28 [2022-01-18 07:39:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:59,449 INFO L470 AbstractCegarLoop]: Abstraction has 50308 states and 200140 transitions. [2022-01-18 07:39:59,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 50308 states and 200140 transitions. [2022-01-18 07:39:59,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:39:59,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:59,525 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:59,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (206)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:59,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206,206 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:59,725 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:39:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash 373776318, now seen corresponding path program 132 times [2022-01-18 07:39:59,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:59,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130162215] [2022-01-18 07:39:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:59,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:59,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:59,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130162215] [2022-01-18 07:39:59,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130162215] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:59,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533417413] [2022-01-18 07:39:59,758 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:39:59,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:59,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:59,759 INFO L229 MonitoredProcess]: Starting monitored process 207 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:39:59,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Waiting until timeout for monitored process [2022-01-18 07:39:59,779 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:39:59,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:59,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:59,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:59,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:59,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533417413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:59,909 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:59,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:39:59,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120050216] [2022-01-18 07:39:59,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:59,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:39:59,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:59,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:39:59,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:39:59,909 INFO L87 Difference]: Start difference. First operand 50308 states and 200140 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:01,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:01,140 INFO L93 Difference]: Finished difference Result 70042 states and 268957 transitions. [2022-01-18 07:40:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 07:40:01,140 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:01,370 INFO L225 Difference]: With dead ends: 70042 [2022-01-18 07:40:01,370 INFO L226 Difference]: Without dead ends: 70042 [2022-01-18 07:40:01,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=783, Invalid=2877, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 07:40:01,370 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 380 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:01,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 260 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:40:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70042 states. [2022-01-18 07:40:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70042 to 51798. [2022-01-18 07:40:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51798 states, 51797 states have (on average 3.956773558314188) internal successors, (204949), 51797 states have internal predecessors, (204949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:02,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51798 states to 51798 states and 204949 transitions. [2022-01-18 07:40:02,992 INFO L78 Accepts]: Start accepts. Automaton has 51798 states and 204949 transitions. Word has length 28 [2022-01-18 07:40:02,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:02,992 INFO L470 AbstractCegarLoop]: Abstraction has 51798 states and 204949 transitions. [2022-01-18 07:40:02,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:02,992 INFO L276 IsEmpty]: Start isEmpty. Operand 51798 states and 204949 transitions. [2022-01-18 07:40:03,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:03,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:03,071 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:03,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (207)] Forceful destruction successful, exit code 0 [2022-01-18 07:40:03,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable207 [2022-01-18 07:40:03,271 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:03,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:03,271 INFO L85 PathProgramCache]: Analyzing trace with hash -709246338, now seen corresponding path program 133 times [2022-01-18 07:40:03,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:03,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962797379] [2022-01-18 07:40:03,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:03,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:03,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:03,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962797379] [2022-01-18 07:40:03,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962797379] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:03,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529254972] [2022-01-18 07:40:03,305 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:40:03,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:03,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:03,306 INFO L229 MonitoredProcess]: Starting monitored process 208 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:03,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Waiting until timeout for monitored process [2022-01-18 07:40:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:03,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:40:03,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:03,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:03,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529254972] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:03,426 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:03,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-01-18 07:40:03,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550220601] [2022-01-18 07:40:03,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:03,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 07:40:03,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:03,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 07:40:03,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:40:03,426 INFO L87 Difference]: Start difference. First operand 51798 states and 204949 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:04,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:04,186 INFO L93 Difference]: Finished difference Result 61877 states and 240304 transitions. [2022-01-18 07:40:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 07:40:04,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:04,379 INFO L225 Difference]: With dead ends: 61877 [2022-01-18 07:40:04,379 INFO L226 Difference]: Without dead ends: 61857 [2022-01-18 07:40:04,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:40:04,380 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 191 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:04,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 102 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:40:04,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61857 states. [2022-01-18 07:40:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61857 to 57063. [2022-01-18 07:40:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57063 states, 57062 states have (on average 3.9566611755634225) internal successors, (225775), 57062 states have internal predecessors, (225775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57063 states to 57063 states and 225775 transitions. [2022-01-18 07:40:06,084 INFO L78 Accepts]: Start accepts. Automaton has 57063 states and 225775 transitions. Word has length 28 [2022-01-18 07:40:06,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:06,084 INFO L470 AbstractCegarLoop]: Abstraction has 57063 states and 225775 transitions. [2022-01-18 07:40:06,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:06,084 INFO L276 IsEmpty]: Start isEmpty. Operand 57063 states and 225775 transitions. [2022-01-18 07:40:06,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:06,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:06,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:06,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (208)] Forceful destruction successful, exit code 0 [2022-01-18 07:40:06,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,208 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:06,639 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:06,639 INFO L85 PathProgramCache]: Analyzing trace with hash 761831780, now seen corresponding path program 134 times [2022-01-18 07:40:06,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948927508] [2022-01-18 07:40:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:06,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:06,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:06,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:06,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948927508] [2022-01-18 07:40:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948927508] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:06,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513565321] [2022-01-18 07:40:06,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:40:06,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:06,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:06,676 INFO L229 MonitoredProcess]: Starting monitored process 209 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:06,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Waiting until timeout for monitored process [2022-01-18 07:40:06,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:40:06,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:06,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:40:06,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:06,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:06,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513565321] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:06,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:06,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-01-18 07:40:06,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664670512] [2022-01-18 07:40:06,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:06,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 07:40:06,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:06,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 07:40:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:40:06,813 INFO L87 Difference]: Start difference. First operand 57063 states and 225775 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:07,397 INFO L93 Difference]: Finished difference Result 63480 states and 245627 transitions. [2022-01-18 07:40:07,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 07:40:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:07,598 INFO L225 Difference]: With dead ends: 63480 [2022-01-18 07:40:07,598 INFO L226 Difference]: Without dead ends: 63480 [2022-01-18 07:40:07,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:40:07,598 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 174 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:07,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 177 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:40:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63480 states. [2022-01-18 07:40:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63480 to 56626. [2022-01-18 07:40:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56626 states, 56625 states have (on average 3.956150110375276) internal successors, (224017), 56625 states have internal predecessors, (224017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56626 states to 56626 states and 224017 transitions. [2022-01-18 07:40:09,340 INFO L78 Accepts]: Start accepts. Automaton has 56626 states and 224017 transitions. Word has length 28 [2022-01-18 07:40:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:09,340 INFO L470 AbstractCegarLoop]: Abstraction has 56626 states and 224017 transitions. [2022-01-18 07:40:09,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 56626 states and 224017 transitions. [2022-01-18 07:40:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:09,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:09,425 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:09,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (209)] Forceful destruction successful, exit code 0 [2022-01-18 07:40:09,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable209 [2022-01-18 07:40:09,625 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:09,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:09,625 INFO L85 PathProgramCache]: Analyzing trace with hash 328955176, now seen corresponding path program 135 times [2022-01-18 07:40:09,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:09,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243574380] [2022-01-18 07:40:09,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:09,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:09,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:09,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243574380] [2022-01-18 07:40:09,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243574380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:09,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635175108] [2022-01-18 07:40:09,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:40:09,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:09,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:09,658 INFO L229 MonitoredProcess]: Starting monitored process 210 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:09,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Waiting until timeout for monitored process [2022-01-18 07:40:09,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:40:09,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:09,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:40:09,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:09,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:09,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635175108] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:09,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:09,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:40:09,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093682811] [2022-01-18 07:40:09,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:09,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:40:09,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:40:09,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:40:09,810 INFO L87 Difference]: Start difference. First operand 56626 states and 224017 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:10,634 INFO L93 Difference]: Finished difference Result 75421 states and 290550 transitions. [2022-01-18 07:40:10,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 07:40:10,634 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:10,874 INFO L225 Difference]: With dead ends: 75421 [2022-01-18 07:40:10,874 INFO L226 Difference]: Without dead ends: 75413 [2022-01-18 07:40:10,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=515, Invalid=1837, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 07:40:10,875 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 410 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:10,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 214 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:40:10,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75413 states. [2022-01-18 07:40:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75413 to 56574. [2022-01-18 07:40:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56574 states, 56573 states have (on average 3.9566400933307406) internal successors, (223839), 56573 states have internal predecessors, (223839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56574 states to 56574 states and 223839 transitions. [2022-01-18 07:40:12,789 INFO L78 Accepts]: Start accepts. Automaton has 56574 states and 223839 transitions. Word has length 28 [2022-01-18 07:40:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:12,789 INFO L470 AbstractCegarLoop]: Abstraction has 56574 states and 223839 transitions. [2022-01-18 07:40:12,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:12,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56574 states and 223839 transitions. [2022-01-18 07:40:12,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:12,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:12,875 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:12,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (210)] Ended with exit code 0 [2022-01-18 07:40:13,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-01-18 07:40:13,076 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:13,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:13,076 INFO L85 PathProgramCache]: Analyzing trace with hash -566865640, now seen corresponding path program 136 times [2022-01-18 07:40:13,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:13,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229986863] [2022-01-18 07:40:13,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:13,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:40:13,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:13,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229986863] [2022-01-18 07:40:13,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229986863] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:13,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036991279] [2022-01-18 07:40:13,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:40:13,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:13,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:13,111 INFO L229 MonitoredProcess]: Starting monitored process 211 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:13,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Waiting until timeout for monitored process [2022-01-18 07:40:13,129 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:40:13,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:13,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:40:13,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:13,183 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:40:13,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:40:13,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036991279] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:13,234 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:13,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-01-18 07:40:13,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801277162] [2022-01-18 07:40:13,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:13,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 07:40:13,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:13,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 07:40:13,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:40:13,234 INFO L87 Difference]: Start difference. First operand 56574 states and 223839 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:13,806 INFO L93 Difference]: Finished difference Result 63000 states and 244434 transitions. [2022-01-18 07:40:13,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 07:40:13,806 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:14,329 INFO L225 Difference]: With dead ends: 63000 [2022-01-18 07:40:14,329 INFO L226 Difference]: Without dead ends: 63000 [2022-01-18 07:40:14,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=262, Invalid=608, Unknown=0, NotChecked=0, Total=870 [2022-01-18 07:40:14,330 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 162 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:14,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 136 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:40:14,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63000 states. [2022-01-18 07:40:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63000 to 57116. [2022-01-18 07:40:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57116 states, 57115 states have (on average 3.9546178762146544) internal successors, (225868), 57115 states have internal predecessors, (225868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57116 states to 57116 states and 225868 transitions. [2022-01-18 07:40:15,750 INFO L78 Accepts]: Start accepts. Automaton has 57116 states and 225868 transitions. Word has length 28 [2022-01-18 07:40:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:15,750 INFO L470 AbstractCegarLoop]: Abstraction has 57116 states and 225868 transitions. [2022-01-18 07:40:15,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 57116 states and 225868 transitions. [2022-01-18 07:40:15,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:15,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:15,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:15,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (211)] Forceful destruction successful, exit code 0 [2022-01-18 07:40:16,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 211 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2022-01-18 07:40:16,037 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:16,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash 926291834, now seen corresponding path program 137 times [2022-01-18 07:40:16,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:16,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955957002] [2022-01-18 07:40:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:16,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:40:16,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955957002] [2022-01-18 07:40:16,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955957002] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252755109] [2022-01-18 07:40:16,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:40:16,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:16,073 INFO L229 MonitoredProcess]: Starting monitored process 212 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:16,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Waiting until timeout for monitored process [2022-01-18 07:40:16,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:40:16,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:16,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:40:16,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:40:16,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:40:16,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252755109] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:16,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:16,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-01-18 07:40:16,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407591444] [2022-01-18 07:40:16,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:16,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:40:16,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:40:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:40:16,215 INFO L87 Difference]: Start difference. First operand 57116 states and 225868 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:17,393 INFO L93 Difference]: Finished difference Result 76652 states and 295054 transitions. [2022-01-18 07:40:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 07:40:17,393 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:17,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:17,681 INFO L225 Difference]: With dead ends: 76652 [2022-01-18 07:40:17,682 INFO L226 Difference]: Without dead ends: 76628 [2022-01-18 07:40:17,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=502, Invalid=1850, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 07:40:17,682 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 382 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:17,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 225 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:40:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76628 states. [2022-01-18 07:40:19,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76628 to 57300. [2022-01-18 07:40:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57300 states, 57299 states have (on average 3.951901429344317) internal successors, (226440), 57299 states have internal predecessors, (226440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:19,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57300 states to 57300 states and 226440 transitions. [2022-01-18 07:40:19,315 INFO L78 Accepts]: Start accepts. Automaton has 57300 states and 226440 transitions. Word has length 28 [2022-01-18 07:40:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:19,315 INFO L470 AbstractCegarLoop]: Abstraction has 57300 states and 226440 transitions. [2022-01-18 07:40:19,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 57300 states and 226440 transitions. [2022-01-18 07:40:19,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:19,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:19,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:19,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (212)] Ended with exit code 0 [2022-01-18 07:40:19,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-01-18 07:40:19,602 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:19,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:19,603 INFO L85 PathProgramCache]: Analyzing trace with hash -924717860, now seen corresponding path program 138 times [2022-01-18 07:40:19,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:19,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856409897] [2022-01-18 07:40:19,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:19,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:19,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:19,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856409897] [2022-01-18 07:40:19,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856409897] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:19,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115916012] [2022-01-18 07:40:19,641 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:40:19,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:19,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:19,642 INFO L229 MonitoredProcess]: Starting monitored process 213 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:19,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Waiting until timeout for monitored process [2022-01-18 07:40:19,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:40:19,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:19,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 07:40:19,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:19,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:19,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115916012] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:19,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:19,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 13 [2022-01-18 07:40:19,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168889966] [2022-01-18 07:40:19,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:19,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:40:19,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:19,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:40:19,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:40:19,771 INFO L87 Difference]: Start difference. First operand 57300 states and 226440 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:20,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:20,706 INFO L93 Difference]: Finished difference Result 63521 states and 246283 transitions. [2022-01-18 07:40:20,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 07:40:20,706 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:20,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:20,904 INFO L225 Difference]: With dead ends: 63521 [2022-01-18 07:40:20,904 INFO L226 Difference]: Without dead ends: 63521 [2022-01-18 07:40:20,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 07:40:20,904 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 167 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:20,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 148 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:40:20,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63521 states. [2022-01-18 07:40:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63521 to 57223. [2022-01-18 07:40:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57223 states, 57222 states have (on average 3.952605641186956) internal successors, (226176), 57222 states have internal predecessors, (226176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57223 states to 57223 states and 226176 transitions. [2022-01-18 07:40:22,413 INFO L78 Accepts]: Start accepts. Automaton has 57223 states and 226176 transitions. Word has length 28 [2022-01-18 07:40:22,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:22,413 INFO L470 AbstractCegarLoop]: Abstraction has 57223 states and 226176 transitions. [2022-01-18 07:40:22,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 57223 states and 226176 transitions. [2022-01-18 07:40:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:22,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:22,499 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:22,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (213)] Forceful destruction successful, exit code 0 [2022-01-18 07:40:22,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 213 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2022-01-18 07:40:22,699 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:22,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash -66201730, now seen corresponding path program 139 times [2022-01-18 07:40:22,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:22,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083542685] [2022-01-18 07:40:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:22,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:22,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:22,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083542685] [2022-01-18 07:40:22,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083542685] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:22,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886093763] [2022-01-18 07:40:22,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:40:22,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:22,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:22,738 INFO L229 MonitoredProcess]: Starting monitored process 214 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:22,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Waiting until timeout for monitored process [2022-01-18 07:40:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:22,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:40:22,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:22,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:22,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886093763] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:22,881 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:22,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-01-18 07:40:22,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111708320] [2022-01-18 07:40:22,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:22,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:40:22,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:22,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:40:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:40:22,881 INFO L87 Difference]: Start difference. First operand 57223 states and 226176 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:24,049 INFO L93 Difference]: Finished difference Result 76623 states and 294938 transitions. [2022-01-18 07:40:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 07:40:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:24,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:24,292 INFO L225 Difference]: With dead ends: 76623 [2022-01-18 07:40:24,292 INFO L226 Difference]: Without dead ends: 76583 [2022-01-18 07:40:24,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=584, Invalid=2278, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 07:40:24,292 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 408 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:24,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 221 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:40:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76583 states. [2022-01-18 07:40:25,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76583 to 57453. [2022-01-18 07:40:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57453 states, 57452 states have (on average 3.9494360509642834) internal successors, (226903), 57452 states have internal predecessors, (226903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57453 states to 57453 states and 226903 transitions. [2022-01-18 07:40:26,206 INFO L78 Accepts]: Start accepts. Automaton has 57453 states and 226903 transitions. Word has length 28 [2022-01-18 07:40:26,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:26,206 INFO L470 AbstractCegarLoop]: Abstraction has 57453 states and 226903 transitions. [2022-01-18 07:40:26,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:26,206 INFO L276 IsEmpty]: Start isEmpty. Operand 57453 states and 226903 transitions. [2022-01-18 07:40:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:26,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:26,293 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:26,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (214)] Forceful destruction successful, exit code 0 [2022-01-18 07:40:26,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2022-01-18 07:40:26,493 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:26,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:26,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1972672318, now seen corresponding path program 140 times [2022-01-18 07:40:26,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:26,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121323798] [2022-01-18 07:40:26,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:26,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:26,525 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:26,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:26,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121323798] [2022-01-18 07:40:26,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121323798] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:26,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687497410] [2022-01-18 07:40:26,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:40:26,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:26,526 INFO L229 MonitoredProcess]: Starting monitored process 215 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:26,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Waiting until timeout for monitored process [2022-01-18 07:40:26,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:40:26,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:26,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:40:26,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:26,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:26,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687497410] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:26,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:26,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:40:26,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563409570] [2022-01-18 07:40:26,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:26,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:40:26,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:26,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:40:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:40:26,752 INFO L87 Difference]: Start difference. First operand 57453 states and 226903 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:30,037 INFO L93 Difference]: Finished difference Result 144483 states and 547142 transitions. [2022-01-18 07:40:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-01-18 07:40:30,037 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:30,575 INFO L225 Difference]: With dead ends: 144483 [2022-01-18 07:40:30,575 INFO L226 Difference]: Without dead ends: 144483 [2022-01-18 07:40:30,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11955 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=5145, Invalid=21587, Unknown=0, NotChecked=0, Total=26732 [2022-01-18 07:40:30,576 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1035 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:30,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 373 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:40:30,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144483 states. [2022-01-18 07:40:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144483 to 76056. [2022-01-18 07:40:33,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76056 states, 76055 states have (on average 4.014121359542436) internal successors, (305294), 76055 states have internal predecessors, (305294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76056 states to 76056 states and 305294 transitions. [2022-01-18 07:40:34,035 INFO L78 Accepts]: Start accepts. Automaton has 76056 states and 305294 transitions. Word has length 28 [2022-01-18 07:40:34,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:34,035 INFO L470 AbstractCegarLoop]: Abstraction has 76056 states and 305294 transitions. [2022-01-18 07:40:34,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 76056 states and 305294 transitions. [2022-01-18 07:40:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:34,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:34,158 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:34,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (215)] Forceful destruction successful, exit code 0 [2022-01-18 07:40:34,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,215 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:34,358 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:34,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1755342898, now seen corresponding path program 141 times [2022-01-18 07:40:34,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:34,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58992382] [2022-01-18 07:40:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:34,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:34,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:34,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58992382] [2022-01-18 07:40:34,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58992382] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:34,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030709994] [2022-01-18 07:40:34,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:40:34,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:34,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:34,392 INFO L229 MonitoredProcess]: Starting monitored process 216 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:34,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Waiting until timeout for monitored process [2022-01-18 07:40:34,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:40:34,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:34,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:40:34,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:34,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:34,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030709994] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:34,617 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:34,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:40:34,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445215159] [2022-01-18 07:40:34,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:34,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:40:34,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:34,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:40:34,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:40:34,618 INFO L87 Difference]: Start difference. First operand 76056 states and 305294 transitions. Second operand has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:37,505 INFO L93 Difference]: Finished difference Result 133693 states and 504883 transitions. [2022-01-18 07:40:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-01-18 07:40:37,505 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:37,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:38,006 INFO L225 Difference]: With dead ends: 133693 [2022-01-18 07:40:38,006 INFO L226 Difference]: Without dead ends: 133693 [2022-01-18 07:40:38,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9182 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4435, Invalid=15305, Unknown=0, NotChecked=0, Total=19740 [2022-01-18 07:40:38,007 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 949 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:38,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 367 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:40:38,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133693 states. [2022-01-18 07:40:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133693 to 76064. [2022-01-18 07:40:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76064 states, 76063 states have (on average 4.013988404349027) internal successors, (305316), 76063 states have internal predecessors, (305316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:41,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76064 states to 76064 states and 305316 transitions. [2022-01-18 07:40:41,335 INFO L78 Accepts]: Start accepts. Automaton has 76064 states and 305316 transitions. Word has length 28 [2022-01-18 07:40:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:41,335 INFO L470 AbstractCegarLoop]: Abstraction has 76064 states and 305316 transitions. [2022-01-18 07:40:41,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 21 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:41,335 INFO L276 IsEmpty]: Start isEmpty. Operand 76064 states and 305316 transitions. [2022-01-18 07:40:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:41,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:41,459 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:41,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (216)] Ended with exit code 0 [2022-01-18 07:40:41,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216,216 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:41,659 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:41,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:41,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1367278540, now seen corresponding path program 142 times [2022-01-18 07:40:41,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:41,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383968386] [2022-01-18 07:40:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:41,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:41,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383968386] [2022-01-18 07:40:41,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383968386] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:41,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778257648] [2022-01-18 07:40:41,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:40:41,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:41,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:41,693 INFO L229 MonitoredProcess]: Starting monitored process 217 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:41,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Waiting until timeout for monitored process [2022-01-18 07:40:41,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:40:41,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:41,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:40:41,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:41,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:41,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778257648] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:41,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:41,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-01-18 07:40:41,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719205987] [2022-01-18 07:40:41,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:41,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:40:41,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:41,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:40:41,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:40:41,894 INFO L87 Difference]: Start difference. First operand 76064 states and 305316 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:44,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:44,831 INFO L93 Difference]: Finished difference Result 134253 states and 511288 transitions. [2022-01-18 07:40:44,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-18 07:40:44,831 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:44,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:45,318 INFO L225 Difference]: With dead ends: 134253 [2022-01-18 07:40:45,318 INFO L226 Difference]: Without dead ends: 134253 [2022-01-18 07:40:45,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9239 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4148, Invalid=16732, Unknown=0, NotChecked=0, Total=20880 [2022-01-18 07:40:45,320 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 769 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:45,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 371 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 07:40:45,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134253 states. [2022-01-18 07:40:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134253 to 76104. [2022-01-18 07:40:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76104 states, 76103 states have (on average 4.01419129337871) internal successors, (305492), 76103 states have internal predecessors, (305492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:48,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76104 states to 76104 states and 305492 transitions. [2022-01-18 07:40:48,626 INFO L78 Accepts]: Start accepts. Automaton has 76104 states and 305492 transitions. Word has length 28 [2022-01-18 07:40:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:48,626 INFO L470 AbstractCegarLoop]: Abstraction has 76104 states and 305492 transitions. [2022-01-18 07:40:48,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:48,627 INFO L276 IsEmpty]: Start isEmpty. Operand 76104 states and 305492 transitions. [2022-01-18 07:40:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:48,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:48,751 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:48,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (217)] Ended with exit code 0 [2022-01-18 07:40:48,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2022-01-18 07:40:48,951 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:48,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:48,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1448654628, now seen corresponding path program 143 times [2022-01-18 07:40:48,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:48,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467416145] [2022-01-18 07:40:48,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:48,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:48,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:48,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467416145] [2022-01-18 07:40:48,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467416145] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:48,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174775350] [2022-01-18 07:40:48,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:40:48,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:48,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:48,984 INFO L229 MonitoredProcess]: Starting monitored process 218 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:48,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Waiting until timeout for monitored process [2022-01-18 07:40:49,003 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:40:49,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:49,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:40:49,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:49,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:49,197 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:49,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174775350] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:49,197 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:49,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-01-18 07:40:49,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566976875] [2022-01-18 07:40:49,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:49,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:40:49,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:49,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:40:49,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:40:49,198 INFO L87 Difference]: Start difference. First operand 76104 states and 305492 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:51,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:51,674 INFO L93 Difference]: Finished difference Result 132928 states and 507837 transitions. [2022-01-18 07:40:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 07:40:51,675 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:52,157 INFO L225 Difference]: With dead ends: 132928 [2022-01-18 07:40:52,157 INFO L226 Difference]: Without dead ends: 132920 [2022-01-18 07:40:52,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5898 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2971, Invalid=11309, Unknown=0, NotChecked=0, Total=14280 [2022-01-18 07:40:52,158 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 950 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:52,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 281 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:40:52,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132920 states. [2022-01-18 07:40:55,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132920 to 76102. [2022-01-18 07:40:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76102 states, 76101 states have (on average 4.014099683315594) internal successors, (305477), 76101 states have internal predecessors, (305477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76102 states to 76102 states and 305477 transitions. [2022-01-18 07:40:55,426 INFO L78 Accepts]: Start accepts. Automaton has 76102 states and 305477 transitions. Word has length 28 [2022-01-18 07:40:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:55,426 INFO L470 AbstractCegarLoop]: Abstraction has 76102 states and 305477 transitions. [2022-01-18 07:40:55,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 76102 states and 305477 transitions. [2022-01-18 07:40:55,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:40:55,550 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:55,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:40:55,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (218)] Forceful destruction successful, exit code 0 [2022-01-18 07:40:55,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,218 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:55,750 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:40:55,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:55,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1915655452, now seen corresponding path program 144 times [2022-01-18 07:40:55,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:55,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075733957] [2022-01-18 07:40:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:55,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:55,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:55,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075733957] [2022-01-18 07:40:55,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075733957] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:55,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677573009] [2022-01-18 07:40:55,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:40:55,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:55,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:55,784 INFO L229 MonitoredProcess]: Starting monitored process 219 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:40:55,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Waiting until timeout for monitored process [2022-01-18 07:40:55,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:40:55,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:55,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:40:55,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:55,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:55,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677573009] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:55,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:55,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:40:55,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711036972] [2022-01-18 07:40:55,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:55,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:40:55,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:55,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:40:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:40:55,997 INFO L87 Difference]: Start difference. First operand 76102 states and 305477 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:58,556 INFO L93 Difference]: Finished difference Result 112806 states and 433648 transitions. [2022-01-18 07:40:58,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 07:40:58,556 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:40:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:58,965 INFO L225 Difference]: With dead ends: 112806 [2022-01-18 07:40:58,965 INFO L226 Difference]: Without dead ends: 112806 [2022-01-18 07:40:58,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5897 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3052, Invalid=10990, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 07:40:58,966 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 1028 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:58,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1028 Valid, 396 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:40:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112806 states. [2022-01-18 07:41:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112806 to 76110. [2022-01-18 07:41:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76110 states, 76109 states have (on average 4.014124479365121) internal successors, (305511), 76109 states have internal predecessors, (305511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76110 states to 76110 states and 305511 transitions. [2022-01-18 07:41:02,107 INFO L78 Accepts]: Start accepts. Automaton has 76110 states and 305511 transitions. Word has length 28 [2022-01-18 07:41:02,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:02,107 INFO L470 AbstractCegarLoop]: Abstraction has 76110 states and 305511 transitions. [2022-01-18 07:41:02,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 76110 states and 305511 transitions. [2022-01-18 07:41:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:41:02,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:02,232 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:02,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (219)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:02,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable219 [2022-01-18 07:41:02,447 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:41:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:02,447 INFO L85 PathProgramCache]: Analyzing trace with hash -272616298, now seen corresponding path program 145 times [2022-01-18 07:41:02,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:02,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224044090] [2022-01-18 07:41:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:02,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:02,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:02,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224044090] [2022-01-18 07:41:02,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224044090] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:02,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059282686] [2022-01-18 07:41:02,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:41:02,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:02,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:02,494 INFO L229 MonitoredProcess]: Starting monitored process 220 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:41:02,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Waiting until timeout for monitored process [2022-01-18 07:41:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:02,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:41:02,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:02,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:02,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059282686] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:02,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:02,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:41:02,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618450762] [2022-01-18 07:41:02,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:02,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:41:02,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:02,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:41:02,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:41:02,720 INFO L87 Difference]: Start difference. First operand 76110 states and 305511 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:05,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:05,728 INFO L93 Difference]: Finished difference Result 118425 states and 457655 transitions. [2022-01-18 07:41:05,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-01-18 07:41:05,729 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:41:05,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:06,164 INFO L225 Difference]: With dead ends: 118425 [2022-01-18 07:41:06,164 INFO L226 Difference]: Without dead ends: 118417 [2022-01-18 07:41:06,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9330 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4187, Invalid=17865, Unknown=0, NotChecked=0, Total=22052 [2022-01-18 07:41:06,165 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 1034 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:06,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 388 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:41:06,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118417 states. [2022-01-18 07:41:08,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118417 to 76110. [2022-01-18 07:41:08,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76110 states, 76109 states have (on average 4.014098201263977) internal successors, (305509), 76109 states have internal predecessors, (305509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:09,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76110 states to 76110 states and 305509 transitions. [2022-01-18 07:41:09,334 INFO L78 Accepts]: Start accepts. Automaton has 76110 states and 305509 transitions. Word has length 28 [2022-01-18 07:41:09,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:09,334 INFO L470 AbstractCegarLoop]: Abstraction has 76110 states and 305509 transitions. [2022-01-18 07:41:09,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 76110 states and 305509 transitions. [2022-01-18 07:41:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:41:09,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:09,459 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:09,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (220)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:09,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,220 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:09,659 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:41:09,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:09,659 INFO L85 PathProgramCache]: Analyzing trace with hash 730811686, now seen corresponding path program 146 times [2022-01-18 07:41:09,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:09,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094310933] [2022-01-18 07:41:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:09,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:09,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094310933] [2022-01-18 07:41:09,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094310933] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286377944] [2022-01-18 07:41:09,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:41:09,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:09,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:09,693 INFO L229 MonitoredProcess]: Starting monitored process 221 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:41:09,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Waiting until timeout for monitored process [2022-01-18 07:41:09,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:41:09,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:09,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:41:09,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:09,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:09,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286377944] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:09,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:09,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 17 [2022-01-18 07:41:09,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199147491] [2022-01-18 07:41:09,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:09,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:41:09,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:09,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:41:09,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:41:09,873 INFO L87 Difference]: Start difference. First operand 76110 states and 305509 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:12,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:12,009 INFO L93 Difference]: Finished difference Result 134775 states and 517598 transitions. [2022-01-18 07:41:12,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 07:41:12,010 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:41:12,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:12,514 INFO L225 Difference]: With dead ends: 134775 [2022-01-18 07:41:12,514 INFO L226 Difference]: Without dead ends: 134775 [2022-01-18 07:41:12,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3643 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1917, Invalid=7203, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 07:41:12,514 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 660 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:12,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 296 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:41:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134775 states. [2022-01-18 07:41:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134775 to 81802. [2022-01-18 07:41:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81802 states, 81801 states have (on average 4.028520433735529) internal successors, (329537), 81801 states have internal predecessors, (329537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81802 states to 81802 states and 329537 transitions. [2022-01-18 07:41:15,954 INFO L78 Accepts]: Start accepts. Automaton has 81802 states and 329537 transitions. Word has length 28 [2022-01-18 07:41:15,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:15,954 INFO L470 AbstractCegarLoop]: Abstraction has 81802 states and 329537 transitions. [2022-01-18 07:41:15,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:15,954 INFO L276 IsEmpty]: Start isEmpty. Operand 81802 states and 329537 transitions. [2022-01-18 07:41:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:41:16,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:16,089 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:16,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (221)] Ended with exit code 0 [2022-01-18 07:41:16,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 221 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2022-01-18 07:41:16,289 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:41:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:16,289 INFO L85 PathProgramCache]: Analyzing trace with hash 812187774, now seen corresponding path program 147 times [2022-01-18 07:41:16,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:16,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609937224] [2022-01-18 07:41:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:16,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:16,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:16,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609937224] [2022-01-18 07:41:16,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609937224] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:16,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95595737] [2022-01-18 07:41:16,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:41:16,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:16,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:16,323 INFO L229 MonitoredProcess]: Starting monitored process 222 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:41:16,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Waiting until timeout for monitored process [2022-01-18 07:41:16,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:41:16,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:16,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:41:16,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:16,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:16,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95595737] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:16,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:16,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 17 [2022-01-18 07:41:16,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090227849] [2022-01-18 07:41:16,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:16,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:41:16,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:16,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:41:16,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:41:16,494 INFO L87 Difference]: Start difference. First operand 81802 states and 329537 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:18,773 INFO L93 Difference]: Finished difference Result 134141 states and 515904 transitions. [2022-01-18 07:41:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 07:41:18,773 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:41:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:19,524 INFO L225 Difference]: With dead ends: 134141 [2022-01-18 07:41:19,524 INFO L226 Difference]: Without dead ends: 134133 [2022-01-18 07:41:19,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2670 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1518, Invalid=5622, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 07:41:19,525 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 743 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:19,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 244 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:41:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134133 states. [2022-01-18 07:41:22,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134133 to 81516. [2022-01-18 07:41:22,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81516 states, 81515 states have (on average 4.0316996871741395) internal successors, (328644), 81515 states have internal predecessors, (328644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81516 states to 81516 states and 328644 transitions. [2022-01-18 07:41:22,863 INFO L78 Accepts]: Start accepts. Automaton has 81516 states and 328644 transitions. Word has length 28 [2022-01-18 07:41:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:22,863 INFO L470 AbstractCegarLoop]: Abstraction has 81516 states and 328644 transitions. [2022-01-18 07:41:22,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 81516 states and 328644 transitions. [2022-01-18 07:41:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:41:22,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:22,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:23,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (222)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:23,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-01-18 07:41:23,199 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:41:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash -702904198, now seen corresponding path program 148 times [2022-01-18 07:41:23,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:23,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418686124] [2022-01-18 07:41:23,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:23,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:23,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:23,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418686124] [2022-01-18 07:41:23,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418686124] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:23,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035923560] [2022-01-18 07:41:23,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:41:23,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:23,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:23,234 INFO L229 MonitoredProcess]: Starting monitored process 223 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:41:23,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Waiting until timeout for monitored process [2022-01-18 07:41:23,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:41:23,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:23,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:41:23,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:23,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:23,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035923560] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:23,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:23,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 17 [2022-01-18 07:41:23,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571242241] [2022-01-18 07:41:23,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:23,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:41:23,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:41:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:41:23,407 INFO L87 Difference]: Start difference. First operand 81516 states and 328644 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:25,365 INFO L93 Difference]: Finished difference Result 131323 states and 507472 transitions. [2022-01-18 07:41:25,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 07:41:25,365 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:41:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:25,856 INFO L225 Difference]: With dead ends: 131323 [2022-01-18 07:41:25,856 INFO L226 Difference]: Without dead ends: 131299 [2022-01-18 07:41:25,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1252, Invalid=4600, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 07:41:25,856 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 734 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:25,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [734 Valid, 265 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:41:25,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131299 states. [2022-01-18 07:41:28,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131299 to 81404. [2022-01-18 07:41:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81404 states, 81403 states have (on average 4.031743301843912) internal successors, (328196), 81403 states have internal predecessors, (328196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:29,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81404 states to 81404 states and 328196 transitions. [2022-01-18 07:41:29,329 INFO L78 Accepts]: Start accepts. Automaton has 81404 states and 328196 transitions. Word has length 28 [2022-01-18 07:41:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:29,329 INFO L470 AbstractCegarLoop]: Abstraction has 81404 states and 328196 transitions. [2022-01-18 07:41:29,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 81404 states and 328196 transitions. [2022-01-18 07:41:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:41:29,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:29,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:29,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (223)] Ended with exit code 0 [2022-01-18 07:41:29,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 223 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2022-01-18 07:41:29,671 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:41:29,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:29,671 INFO L85 PathProgramCache]: Analyzing trace with hash 894222518, now seen corresponding path program 149 times [2022-01-18 07:41:29,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:29,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895867600] [2022-01-18 07:41:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:29,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:41:29,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:29,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895867600] [2022-01-18 07:41:29,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895867600] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:29,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674939864] [2022-01-18 07:41:29,704 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:41:29,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:29,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:29,705 INFO L229 MonitoredProcess]: Starting monitored process 224 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:41:29,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Waiting until timeout for monitored process [2022-01-18 07:41:29,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:41:29,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:29,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:41:29,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:29,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:41:29,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674939864] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:29,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:29,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:41:29,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349356771] [2022-01-18 07:41:29,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:29,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:41:29,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:41:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:41:29,919 INFO L87 Difference]: Start difference. First operand 81404 states and 328196 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:32,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:32,978 INFO L93 Difference]: Finished difference Result 119692 states and 460437 transitions. [2022-01-18 07:41:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-18 07:41:32,978 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:41:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:33,435 INFO L225 Difference]: With dead ends: 119692 [2022-01-18 07:41:33,435 INFO L226 Difference]: Without dead ends: 119692 [2022-01-18 07:41:33,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8889 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=4085, Invalid=16507, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 07:41:33,436 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 1222 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:33,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1222 Valid, 510 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:41:33,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119692 states. [2022-01-18 07:41:36,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119692 to 81534. [2022-01-18 07:41:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81534 states, 81533 states have (on average 4.0306992260802375) internal successors, (328635), 81533 states have internal predecessors, (328635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81534 states to 81534 states and 328635 transitions. [2022-01-18 07:41:36,793 INFO L78 Accepts]: Start accepts. Automaton has 81534 states and 328635 transitions. Word has length 28 [2022-01-18 07:41:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:36,793 INFO L470 AbstractCegarLoop]: Abstraction has 81534 states and 328635 transitions. [2022-01-18 07:41:36,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 81534 states and 328635 transitions. [2022-01-18 07:41:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:41:36,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:36,938 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:36,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (224)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:37,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-01-18 07:41:37,138 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:41:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:37,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1757705624, now seen corresponding path program 150 times [2022-01-18 07:41:37,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:37,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71356396] [2022-01-18 07:41:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:37,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:41:37,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:37,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71356396] [2022-01-18 07:41:37,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71356396] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:37,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675609753] [2022-01-18 07:41:37,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:41:37,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:37,173 INFO L229 MonitoredProcess]: Starting monitored process 225 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:41:37,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Waiting until timeout for monitored process [2022-01-18 07:41:37,192 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:41:37,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:37,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:41:37,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:37,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:41:37,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675609753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:37,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:37,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 21 [2022-01-18 07:41:37,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893034629] [2022-01-18 07:41:37,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:37,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 07:41:37,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 07:41:37,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:41:37,383 INFO L87 Difference]: Start difference. First operand 81534 states and 328635 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:40,576 INFO L93 Difference]: Finished difference Result 124703 states and 482749 transitions. [2022-01-18 07:41:40,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 07:41:40,576 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:41:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:41,039 INFO L225 Difference]: With dead ends: 124703 [2022-01-18 07:41:41,039 INFO L226 Difference]: Without dead ends: 124695 [2022-01-18 07:41:41,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10828 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4630, Invalid=20492, Unknown=0, NotChecked=0, Total=25122 [2022-01-18 07:41:41,040 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 1190 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:41,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1190 Valid, 412 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:41:41,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124695 states. [2022-01-18 07:41:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124695 to 81456. [2022-01-18 07:41:43,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81456 states, 81455 states have (on average 4.031502056350132) internal successors, (328386), 81455 states have internal predecessors, (328386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:44,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81456 states to 81456 states and 328386 transitions. [2022-01-18 07:41:44,434 INFO L78 Accepts]: Start accepts. Automaton has 81456 states and 328386 transitions. Word has length 28 [2022-01-18 07:41:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:44,434 INFO L470 AbstractCegarLoop]: Abstraction has 81456 states and 328386 transitions. [2022-01-18 07:41:44,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 81456 states and 328386 transitions. [2022-01-18 07:41:44,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:41:44,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:44,569 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:44,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (225)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:44,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,225 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:44,770 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:41:44,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1269804494, now seen corresponding path program 151 times [2022-01-18 07:41:44,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:44,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076079445] [2022-01-18 07:41:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:44,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:41:44,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076079445] [2022-01-18 07:41:44,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076079445] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750054834] [2022-01-18 07:41:44,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:41:44,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:44,803 INFO L229 MonitoredProcess]: Starting monitored process 226 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:41:44,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Waiting until timeout for monitored process [2022-01-18 07:41:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:44,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:41:44,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:44,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:41:44,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750054834] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:44,991 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:44,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 19 [2022-01-18 07:41:44,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803671241] [2022-01-18 07:41:44,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:44,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:41:44,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:41:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:41:44,992 INFO L87 Difference]: Start difference. First operand 81456 states and 328386 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:47,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:47,680 INFO L93 Difference]: Finished difference Result 121907 states and 474000 transitions. [2022-01-18 07:41:47,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-18 07:41:47,681 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:41:47,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:48,140 INFO L225 Difference]: With dead ends: 121907 [2022-01-18 07:41:48,140 INFO L226 Difference]: Without dead ends: 121883 [2022-01-18 07:41:48,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6397 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2990, Invalid=12760, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 07:41:48,141 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 895 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:48,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 328 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:41:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121883 states. [2022-01-18 07:41:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121883 to 81432. [2022-01-18 07:41:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81432 states, 81431 states have (on average 4.031560462231828) internal successors, (328294), 81431 states have internal predecessors, (328294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:51,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81432 states to 81432 states and 328294 transitions. [2022-01-18 07:41:51,553 INFO L78 Accepts]: Start accepts. Automaton has 81432 states and 328294 transitions. Word has length 28 [2022-01-18 07:41:51,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:51,553 INFO L470 AbstractCegarLoop]: Abstraction has 81432 states and 328294 transitions. [2022-01-18 07:41:51,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 81432 states and 328294 transitions. [2022-01-18 07:41:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 07:41:51,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:51,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:51,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (226)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:51,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,226 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:51,891 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 07:41:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash 447138602, now seen corresponding path program 152 times [2022-01-18 07:41:51,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:51,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184406606] [2022-01-18 07:41:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:51,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:51,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:51,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184406606] [2022-01-18 07:41:51,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184406606] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:51,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271148074] [2022-01-18 07:41:51,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:41:51,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:51,930 INFO L229 MonitoredProcess]: Starting monitored process 227 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:41:51,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Waiting until timeout for monitored process [2022-01-18 07:41:51,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:41:51,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:51,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:41:51,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:52,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:52,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271148074] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:52,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:52,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-01-18 07:41:52,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225920239] [2022-01-18 07:41:52,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:52,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:41:52,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:41:52,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:41:52,099 INFO L87 Difference]: Start difference. First operand 81432 states and 328294 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:54,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:54,571 INFO L93 Difference]: Finished difference Result 133360 states and 513881 transitions. [2022-01-18 07:41:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-18 07:41:54,571 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 07:41:54,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2022-01-18 07:41:54,656 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 07:41:54,656 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 07:41:55,080 INFO L225 Difference]: With dead ends: 133360 [2022-01-18 07:41:55,080 INFO L226 Difference]: Without dead ends: 133360 [2022-01-18 07:41:55,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5150 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2422, Invalid=10234, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 07:41:55,081 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 632 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:55,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 343 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:41:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133360 states. [2022-01-18 07:41:55,209 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 07:41:55,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (227)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:55,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2022-01-18 07:41:55,410 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-01-18 07:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 07:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 07:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 07:41:55,413 INFO L732 BasicCegarLoop]: Path program histogram: [152, 74, 1, 1] [2022-01-18 07:41:55,414 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 07:41:55,414 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 07:41:55,415 INFO L202 PluginConnector]: Adding new model sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 07:41:55 BasicIcfg [2022-01-18 07:41:55,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 07:41:55,416 INFO L158 Benchmark]: Toolchain (without parser) took 761324.83ms. Allocated memory was 377.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 339.0MB in the beginning and 12.2GB in the end (delta: -11.9GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2022-01-18 07:41:55,416 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 377.5MB. Free memory is still 340.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 07:41:55,416 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.77ms. Allocated memory is still 377.5MB. Free memory was 339.0MB in the beginning and 337.4MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 07:41:55,416 INFO L158 Benchmark]: Boogie Preprocessor took 13.42ms. Allocated memory is still 377.5MB. Free memory was 337.4MB in the beginning and 336.4MB in the end (delta: 993.1kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 07:41:55,416 INFO L158 Benchmark]: RCFGBuilder took 221.19ms. Allocated memory is still 377.5MB. Free memory was 336.4MB in the beginning and 327.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 07:41:55,416 INFO L158 Benchmark]: TraceAbstraction took 761063.96ms. Allocated memory was 377.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 326.5MB in the beginning and 12.2GB in the end (delta: -11.9GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2022-01-18 07:41:55,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11ms. Allocated memory is still 377.5MB. Free memory is still 340.2MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.77ms. Allocated memory is still 377.5MB. Free memory was 339.0MB in the beginning and 337.4MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 13.42ms. Allocated memory is still 377.5MB. Free memory was 337.4MB in the beginning and 336.4MB in the end (delta: 993.1kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 221.19ms. Allocated memory is still 377.5MB. Free memory was 336.4MB in the beginning and 327.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 761063.96ms. Allocated memory was 377.5MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 326.5MB in the beginning and 12.2GB in the end (delta: -11.9GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 761.0s, OverallIterations: 228, TraceHistogramMax: 3, PathProgramHistogramMax: 152, EmptinessCheckTime: 6.3s, AutomataDifference: 456.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99340 SdHoareTripleChecker+Valid, 111.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99340 mSDsluCounter, 77707 SdHoareTripleChecker+Invalid, 93.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 24060 IncrementalHoareTripleChecker+Unchecked, 128563 mSDsCounter, 19840 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 243661 IncrementalHoareTripleChecker+Invalid, 287561 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19840 mSolverCounterUnsat, 6897 mSDtfsCounter, 243661 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 27489 GetRequests, 9271 SyntacticMatches, 619 SemanticMatches, 17599 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 721029 ImplicationChecksByTransitivity, 318.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81802occurred in iteration=222, InterpolantAutomatonStates: 15652, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 119.7s AutomataMinimizationTime, 228 MinimizatonAttempts, 1988050 StatesRemovedByMinimization, 226 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 126.9s InterpolantComputationTime, 12006 NumberOfCodeBlocks, 12000 NumberOfCodeBlocksAsserted, 778 NumberOfCheckSat, 17310 ConstructedInterpolants, 363 QuantifiedInterpolants, 204783 SizeOfPredicates, 2290 NumberOfNonLiveVariables, 15619 ConjunctsInSsa, 3706 ConjunctsInUnsatCore, 680 InterpolantComputations, 2 PerfectInterpolantSequences, 1353/5419 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown