/usr/bin/java -Xmx8000000000 -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/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 16:26:45,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 16:26:45,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 16:26:45,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-15 16:26:45,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 16:26:45,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 16:26:45,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 16:26:45,808 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 [2022-03-15 16:26:45,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 16:26:45,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 16:26:45,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-15 16:26:45,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-15 16:26:45,833 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 16:26:45,833 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 16:26:45,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 16:26:45,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 16:26:45,833 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 16:26:45,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 16:26:45,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 16:26:45,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 16:26:45,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 16:26:45,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-15 16:26:45,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 16:26:45,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 16:26:46,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 16:26:46,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 16:26:46,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 16:26:46,059 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 16:26:46,060 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 16:26:46,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2022-03-15 16:26:46,061 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2022-03-15 16:26:46,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 16:26:46,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 16:26:46,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 16:26:46,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 16:26:46,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 16:26:46,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,111 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 16:26:46,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 16:26:46,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 16:26:46,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 16:26:46,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 16:26:46,118 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 16:26:46,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 16:26:46,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 16:26:46,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 16:26:46,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/1) ... [2022-03-15 16:26:46,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 16:26:46,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:26:46,156 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) [2022-03-15 16:26:46,191 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 [2022-03-15 16:26:46,205 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-15 16:26:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 16:26:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 16:26:46,205 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-15 16:26:46,205 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 16:26:46,205 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 16:26:46,206 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 16:26:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 16:26:46,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 16:26:46,206 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-03-15 16:26:46,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 16:26:46,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 16:26:46,207 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 16:26:46,246 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 16:26:46,247 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 16:26:46,364 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 16:26:46,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 16:26:46,387 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 16:26:46,391 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 04:26:46 BoogieIcfgContainer [2022-03-15 16:26:46,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 16:26:46,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 16:26:46,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 16:26:46,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 16:26:46,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 04:26:46" (1/2) ... [2022-03-15 16:26:46,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3166b08a and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 04:26:46, skipping insertion in model container [2022-03-15 16:26:46,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 04:26:46" (2/2) ... [2022-03-15 16:26:46,401 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2022-03-15 16:26:46,406 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 16:26:46,406 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-15 16:26:46,406 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 16:26:46,406 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 16:26:46,463 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 16:26:46,538 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 16:26:46,542 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 16:26:46,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 16:26:46,549 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2022-03-15 16:26:46,590 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 16:26:46,606 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:46,606 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] [2022-03-15 16:26:46,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash -637092992, now seen corresponding path program 1 times [2022-03-15 16:26:46,620 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:46,621 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107353073] [2022-03-15 16:26:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:46,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:46,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:46,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107353073] [2022-03-15 16:26:46,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107353073] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:26:46,733 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:26:46,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 16:26:46,735 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324911773] [2022-03-15 16:26:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:26:46,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 16:26:46,740 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:46,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 16:26:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 16:26:46,783 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 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 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:46,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:46,870 INFO L93 Difference]: Finished difference Result 126 states and 331 transitions. [2022-03-15 16:26:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 16:26:46,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-03-15 16:26:46,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:46,879 INFO L225 Difference]: With dead ends: 126 [2022-03-15 16:26:46,879 INFO L226 Difference]: Without dead ends: 126 [2022-03-15 16:26:46,880 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 [2022-03-15 16:26:46,882 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:46,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 16:26:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-03-15 16:26:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-03-15 16:26:46,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.648) internal successors, (331), 125 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:46,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 331 transitions. [2022-03-15 16:26:46,969 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 331 transitions. Word has length 21 [2022-03-15 16:26:46,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:46,969 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 331 transitions. [2022-03-15 16:26:46,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:46,969 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 331 transitions. [2022-03-15 16:26:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 16:26:46,970 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:46,971 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] [2022-03-15 16:26:46,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 16:26:46,974 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:46,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:46,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1418210977, now seen corresponding path program 1 times [2022-03-15 16:26:46,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:46,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463205000] [2022-03-15 16:26:46,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:46,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:47,025 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:47,026 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463205000] [2022-03-15 16:26:47,026 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463205000] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:26:47,026 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:26:47,026 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-15 16:26:47,026 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130846609] [2022-03-15 16:26:47,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:26:47,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 16:26:47,027 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:47,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 16:26:47,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 16:26:47,030 INFO L87 Difference]: Start difference. First operand 126 states and 331 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:47,081 INFO L93 Difference]: Finished difference Result 176 states and 475 transitions. [2022-03-15 16:26:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 16:26:47,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 [2022-03-15 16:26:47,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:47,083 INFO L225 Difference]: With dead ends: 176 [2022-03-15 16:26:47,083 INFO L226 Difference]: Without dead ends: 176 [2022-03-15 16:26:47,083 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 [2022-03-15 16:26:47,084 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:47,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:26:47,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-03-15 16:26:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 151. [2022-03-15 16:26:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.6866666666666665) internal successors, (403), 150 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 403 transitions. [2022-03-15 16:26:47,092 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 403 transitions. Word has length 24 [2022-03-15 16:26:47,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:47,093 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 403 transitions. [2022-03-15 16:26:47,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,093 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 403 transitions. [2022-03-15 16:26:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 16:26:47,094 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:47,094 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, 1, 1] [2022-03-15 16:26:47,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 16:26:47,095 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:47,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash 365469361, now seen corresponding path program 1 times [2022-03-15 16:26:47,102 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:47,102 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295301668] [2022-03-15 16:26:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:47,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:47,189 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:47,189 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295301668] [2022-03-15 16:26:47,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295301668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:26:47,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:26:47,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 16:26:47,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970685082] [2022-03-15 16:26:47,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:26:47,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 16:26:47,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 16:26:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 16:26:47,191 INFO L87 Difference]: Start difference. First operand 151 states and 403 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:47,270 INFO L93 Difference]: Finished difference Result 223 states and 619 transitions. [2022-03-15 16:26:47,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 16:26:47,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2022-03-15 16:26:47,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:47,272 INFO L225 Difference]: With dead ends: 223 [2022-03-15 16:26:47,272 INFO L226 Difference]: Without dead ends: 223 [2022-03-15 16:26:47,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:26:47,283 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:47,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:26:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-03-15 16:26:47,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-03-15 16:26:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.7882882882882885) internal successors, (619), 222 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 619 transitions. [2022-03-15 16:26:47,295 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 619 transitions. Word has length 26 [2022-03-15 16:26:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:47,295 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 619 transitions. [2022-03-15 16:26:47,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 619 transitions. [2022-03-15 16:26:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 16:26:47,297 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:47,297 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, 1, 1, 1, 1] [2022-03-15 16:26:47,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 16:26:47,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:47,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 282875335, now seen corresponding path program 1 times [2022-03-15 16:26:47,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:47,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232693853] [2022-03-15 16:26:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:47,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 16:26:47,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:47,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232693853] [2022-03-15 16:26:47,354 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232693853] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 16:26:47,354 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 16:26:47,354 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 16:26:47,354 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537681500] [2022-03-15 16:26:47,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-15 16:26:47,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 16:26:47,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 16:26:47,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-15 16:26:47,355 INFO L87 Difference]: Start difference. First operand 223 states and 619 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:47,391 INFO L93 Difference]: Finished difference Result 344 states and 930 transitions. [2022-03-15 16:26:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 16:26:47,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 [2022-03-15 16:26:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:47,394 INFO L225 Difference]: With dead ends: 344 [2022-03-15 16:26:47,394 INFO L226 Difference]: Without dead ends: 308 [2022-03-15 16:26:47,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-15 16:26:47,396 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:47,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 16:26:47,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-15 16:26:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235. [2022-03-15 16:26:47,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.8076923076923075) internal successors, (657), 234 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 657 transitions. [2022-03-15 16:26:47,409 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 657 transitions. Word has length 28 [2022-03-15 16:26:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:47,409 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 657 transitions. [2022-03-15 16:26:47,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:47,409 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 657 transitions. [2022-03-15 16:26:47,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 16:26:47,413 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:47,413 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, 1, 1, 1, 1] [2022-03-15 16:26:47,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 16:26:47,413 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:47,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:47,413 INFO L85 PathProgramCache]: Analyzing trace with hash 290186221, now seen corresponding path program 2 times [2022-03-15 16:26:47,414 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:47,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217033185] [2022-03-15 16:26:47,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:47,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:47,536 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:47,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217033185] [2022-03-15 16:26:47,536 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217033185] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:26:47,536 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191365380] [2022-03-15 16:26:47,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:26:47,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:47,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:26:47,552 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) [2022-03-15 16:26:47,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 16:26:47,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:26:47,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:26:47,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 16:26:47,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:26:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:47,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:26:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:48,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191365380] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:26:48,171 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:26:48,172 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2022-03-15 16:26:48,172 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344885304] [2022-03-15 16:26:48,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:26:48,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 16:26:48,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 16:26:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-03-15 16:26:48,173 INFO L87 Difference]: Start difference. First operand 235 states and 657 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 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) [2022-03-15 16:26:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:48,788 INFO L93 Difference]: Finished difference Result 633 states and 1787 transitions. [2022-03-15 16:26:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 16:26:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 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 30 [2022-03-15 16:26:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:48,792 INFO L225 Difference]: With dead ends: 633 [2022-03-15 16:26:48,792 INFO L226 Difference]: Without dead ends: 633 [2022-03-15 16:26:48,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 16:26:48,793 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 226 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:48,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 106 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 16:26:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-03-15 16:26:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 316. [2022-03-15 16:26:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.961904761904762) internal successors, (933), 315 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 933 transitions. [2022-03-15 16:26:48,808 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 933 transitions. Word has length 30 [2022-03-15 16:26:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:48,808 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 933 transitions. [2022-03-15 16:26:48,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 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) [2022-03-15 16:26:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 933 transitions. [2022-03-15 16:26:48,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 16:26:48,810 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:48,810 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, 1, 1, 1, 1] [2022-03-15 16:26:48,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 16:26:49,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:49,029 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:49,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:49,030 INFO L85 PathProgramCache]: Analyzing trace with hash 581986797, now seen corresponding path program 3 times [2022-03-15 16:26:49,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:49,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411786458] [2022-03-15 16:26:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:49,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:49,104 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:49,104 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411786458] [2022-03-15 16:26:49,105 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411786458] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:26:49,105 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424393848] [2022-03-15 16:26:49,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:26:49,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:26:49,128 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) [2022-03-15 16:26:49,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 16:26:49,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 16:26:49,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:26:49,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 16:26:49,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:26:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:49,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:26:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:49,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424393848] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:26:49,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:26:49,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-03-15 16:26:49,641 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326651209] [2022-03-15 16:26:49,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:26:49,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 16:26:49,642 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:49,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 16:26:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-03-15 16:26:49,643 INFO L87 Difference]: Start difference. First operand 316 states and 933 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) [2022-03-15 16:26:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:49,974 INFO L93 Difference]: Finished difference Result 861 states and 2534 transitions. [2022-03-15 16:26:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 16:26:49,974 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 30 [2022-03-15 16:26:49,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:49,978 INFO L225 Difference]: With dead ends: 861 [2022-03-15 16:26:49,978 INFO L226 Difference]: Without dead ends: 861 [2022-03-15 16:26:49,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=591, Unknown=0, NotChecked=0, Total=870 [2022-03-15 16:26:49,980 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 297 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:49,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 107 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 16:26:49,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-03-15 16:26:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 588. [2022-03-15 16:26:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.06984667802385) internal successors, (1802), 587 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1802 transitions. [2022-03-15 16:26:49,995 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1802 transitions. Word has length 30 [2022-03-15 16:26:49,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:49,996 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1802 transitions. [2022-03-15 16:26:49,996 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) [2022-03-15 16:26:49,996 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1802 transitions. [2022-03-15 16:26:49,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 16:26:49,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:49,999 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, 1, 1, 1, 1] [2022-03-15 16:26:50,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 16:26:50,216 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,SelfDestructingSolverStorable5 [2022-03-15 16:26:50,216 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:50,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:50,217 INFO L85 PathProgramCache]: Analyzing trace with hash -101147565, now seen corresponding path program 4 times [2022-03-15 16:26:50,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:50,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923309305] [2022-03-15 16:26:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:50,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:50,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:50,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923309305] [2022-03-15 16:26:50,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923309305] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:26:50,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137707836] [2022-03-15 16:26:50,331 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:26:50,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:50,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:26:50,332 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) [2022-03-15 16:26:50,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 16:26:50,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:26:50,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:26:50,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 16:26:50,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:26:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:50,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:26:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:26:50,873 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137707836] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:26:50,873 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:26:50,873 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 23 [2022-03-15 16:26:50,873 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223769674] [2022-03-15 16:26:50,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:26:50,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 16:26:50,874 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:50,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 16:26:50,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-03-15 16:26:50,875 INFO L87 Difference]: Start difference. First operand 588 states and 1802 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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) [2022-03-15 16:26:51,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:51,600 INFO L93 Difference]: Finished difference Result 975 states and 2760 transitions. [2022-03-15 16:26:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 16:26:51,601 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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 32 [2022-03-15 16:26:51,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:51,605 INFO L225 Difference]: With dead ends: 975 [2022-03-15 16:26:51,605 INFO L226 Difference]: Without dead ends: 975 [2022-03-15 16:26:51,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=581, Invalid=1581, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:26:51,606 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 242 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:51,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 184 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 16:26:51,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-03-15 16:26:51,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 710. [2022-03-15 16:26:51,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.011283497884344) internal successors, (2135), 709 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2135 transitions. [2022-03-15 16:26:51,625 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2135 transitions. Word has length 32 [2022-03-15 16:26:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:51,625 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2135 transitions. [2022-03-15 16:26:51,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 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) [2022-03-15 16:26:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2135 transitions. [2022-03-15 16:26:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 16:26:51,627 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:51,627 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, 1, 1, 1, 1] [2022-03-15 16:26:51,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 16:26:51,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:51,844 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1192213421, now seen corresponding path program 5 times [2022-03-15 16:26:51,844 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:51,844 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994186656] [2022-03-15 16:26:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:51,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:51,950 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:51,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994186656] [2022-03-15 16:26:51,950 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994186656] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:26:51,950 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560211479] [2022-03-15 16:26:51,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:26:51,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:51,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:26:51,951 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) [2022-03-15 16:26:51,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 16:26:51,981 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-15 16:26:51,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:26:51,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 16:26:51,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:26:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:52,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:26:52,535 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:52,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560211479] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:26:52,535 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:26:52,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 25 [2022-03-15 16:26:52,536 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571248850] [2022-03-15 16:26:52,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:26:52,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 16:26:52,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:52,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 16:26:52,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-03-15 16:26:52,537 INFO L87 Difference]: Start difference. First operand 710 states and 2135 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) [2022-03-15 16:26:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:54,399 INFO L93 Difference]: Finished difference Result 1943 states and 5560 transitions. [2022-03-15 16:26:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-03-15 16:26:54,399 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 32 [2022-03-15 16:26:54,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:54,406 INFO L225 Difference]: With dead ends: 1943 [2022-03-15 16:26:54,406 INFO L226 Difference]: Without dead ends: 1943 [2022-03-15 16:26:54,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2574 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1583, Invalid=5557, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 16:26:54,408 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 278 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:54,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 329 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 16:26:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-03-15 16:26:54,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 826. [2022-03-15 16:26:54,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.0715151515151513) internal successors, (2534), 825 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2534 transitions. [2022-03-15 16:26:54,433 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2534 transitions. Word has length 32 [2022-03-15 16:26:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:54,434 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 2534 transitions. [2022-03-15 16:26:54,434 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) [2022-03-15 16:26:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2534 transitions. [2022-03-15 16:26:54,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 16:26:54,436 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:54,436 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, 1, 1, 1, 1] [2022-03-15 16:26:54,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 16:26:54,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:54,654 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:54,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:54,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1582175149, now seen corresponding path program 6 times [2022-03-15 16:26:54,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:54,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297056089] [2022-03-15 16:26:54,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:54,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:54,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:54,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297056089] [2022-03-15 16:26:54,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297056089] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:26:54,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785775638] [2022-03-15 16:26:54,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 16:26:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:26:54,832 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) [2022-03-15 16:26:54,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 16:26:54,874 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 16:26:54,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:26:54,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 16:26:54,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:26:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:55,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:26:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:55,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785775638] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:26:55,487 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:26:55,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 26 [2022-03-15 16:26:55,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249421576] [2022-03-15 16:26:55,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:26:55,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 16:26:55,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:55,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 16:26:55,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-03-15 16:26:55,489 INFO L87 Difference]: Start difference. First operand 826 states and 2534 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) [2022-03-15 16:26:57,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:26:57,718 INFO L93 Difference]: Finished difference Result 2939 states and 8774 transitions. [2022-03-15 16:26:57,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-15 16:26:57,719 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 32 [2022-03-15 16:26:57,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:26:57,731 INFO L225 Difference]: With dead ends: 2939 [2022-03-15 16:26:57,731 INFO L226 Difference]: Without dead ends: 2939 [2022-03-15 16:26:57,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2652, Invalid=8060, Unknown=0, NotChecked=0, Total=10712 [2022-03-15 16:26:57,735 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 411 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 16:26:57,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 295 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 16:26:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-03-15 16:26:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1137. [2022-03-15 16:26:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 3.1778169014084505) internal successors, (3610), 1136 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:26:57,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 3610 transitions. [2022-03-15 16:26:57,775 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 3610 transitions. Word has length 32 [2022-03-15 16:26:57,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:26:57,776 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 3610 transitions. [2022-03-15 16:26:57,776 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) [2022-03-15 16:26:57,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 3610 transitions. [2022-03-15 16:26:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 16:26:57,779 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:26:57,779 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, 1, 1, 1, 1] [2022-03-15 16:26:57,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-15 16:26:57,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:58,000 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:26:58,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:26:58,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1367115515, now seen corresponding path program 7 times [2022-03-15 16:26:58,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:26:58,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159523573] [2022-03-15 16:26:58,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:26:58,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:26:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:58,127 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:58,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:26:58,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159523573] [2022-03-15 16:26:58,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159523573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:26:58,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561071984] [2022-03-15 16:26:58,128 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 16:26:58,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:26:58,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:26:58,129 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) [2022-03-15 16:26:58,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 16:26:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:26:58,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 16:26:58,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:26:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:58,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:26:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:26:58,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561071984] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:26:58,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:26:58,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-03-15 16:26:58,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192778408] [2022-03-15 16:26:58,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:26:58,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 16:26:58,895 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:26:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 16:26:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-03-15 16:26:58,896 INFO L87 Difference]: Start difference. First operand 1137 states and 3610 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) [2022-03-15 16:27:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:27:00,259 INFO L93 Difference]: Finished difference Result 4727 states and 14426 transitions. [2022-03-15 16:27:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 16:27:00,260 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 32 [2022-03-15 16:27:00,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:27:00,278 INFO L225 Difference]: With dead ends: 4727 [2022-03-15 16:27:00,278 INFO L226 Difference]: Without dead ends: 4727 [2022-03-15 16:27:00,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1162, Invalid=3128, Unknown=0, NotChecked=0, Total=4290 [2022-03-15 16:27:00,280 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 554 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 16:27:00,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 222 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 16:27:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2022-03-15 16:27:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 2168. [2022-03-15 16:27:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 3.2459621596677435) internal successors, (7034), 2167 states have internal predecessors, (7034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:00,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 7034 transitions. [2022-03-15 16:27:00,346 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 7034 transitions. Word has length 32 [2022-03-15 16:27:00,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:27:00,346 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 7034 transitions. [2022-03-15 16:27:00,346 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) [2022-03-15 16:27:00,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 7034 transitions. [2022-03-15 16:27:00,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 16:27:00,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:27:00,352 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, 1, 1, 1, 1] [2022-03-15 16:27:00,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 16:27:00,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:27:00,568 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:27:00,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:27:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1458806875, now seen corresponding path program 8 times [2022-03-15 16:27:00,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:27:00,569 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656942275] [2022-03-15 16:27:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:27:00,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:27:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:27:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 16:27:00,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:27:00,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656942275] [2022-03-15 16:27:00,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656942275] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:27:00,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467956634] [2022-03-15 16:27:00,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:27:00,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:27:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:27:00,646 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) [2022-03-15 16:27:00,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 16:27:00,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:27:00,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:27:00,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 16:27:00,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:27:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 16:27:00,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:27:01,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:01,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467956634] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:27:01,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:27:01,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 18 [2022-03-15 16:27:01,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332594005] [2022-03-15 16:27:01,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:27:01,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 16:27:01,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:27:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 16:27:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-03-15 16:27:01,172 INFO L87 Difference]: Start difference. First operand 2168 states and 7034 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) [2022-03-15 16:27:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:27:01,288 INFO L93 Difference]: Finished difference Result 2799 states and 8918 transitions. [2022-03-15 16:27:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 16:27:01,289 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 32 [2022-03-15 16:27:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:27:01,311 INFO L225 Difference]: With dead ends: 2799 [2022-03-15 16:27:01,311 INFO L226 Difference]: Without dead ends: 2799 [2022-03-15 16:27:01,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2022-03-15 16:27:01,312 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 349 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:27:01,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 68 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 16:27:01,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-03-15 16:27:01,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2149. [2022-03-15 16:27:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 3.241154562383613) internal successors, (6962), 2148 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) [2022-03-15 16:27:01,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 6962 transitions. [2022-03-15 16:27:01,359 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 6962 transitions. Word has length 32 [2022-03-15 16:27:01,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:27:01,359 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 6962 transitions. [2022-03-15 16:27:01,359 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) [2022-03-15 16:27:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 6962 transitions. [2022-03-15 16:27:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:27:01,363 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:27:01,363 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:27:01,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-15 16:27:01,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:27:01,579 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:27:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:27:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash 412803505, now seen corresponding path program 9 times [2022-03-15 16:27:01,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:27:01,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220213031] [2022-03-15 16:27:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:27:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:27:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:27:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:27:01,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:27:01,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220213031] [2022-03-15 16:27:01,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220213031] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:27:01,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004073300] [2022-03-15 16:27:01,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:27:01,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:27:01,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:27:01,881 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) [2022-03-15 16:27:01,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 16:27:01,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:27:01,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 16:27:01,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:27:01,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 16:27:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:02,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:27:04,419 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:04,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004073300] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:27:04,420 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:27:04,420 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-03-15 16:27:04,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752488471] [2022-03-15 16:27:04,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:27:04,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:27:04,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:27:04,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:27:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1815, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:27:04,435 INFO L87 Difference]: Start difference. First operand 2149 states and 6962 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:15,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:27:15,306 INFO L93 Difference]: Finished difference Result 7861 states and 24237 transitions. [2022-03-15 16:27:15,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-15 16:27:15,307 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:27:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:27:15,323 INFO L225 Difference]: With dead ends: 7861 [2022-03-15 16:27:15,324 INFO L226 Difference]: Without dead ends: 7696 [2022-03-15 16:27:15,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10002 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=4125, Invalid=23597, Unknown=0, NotChecked=0, Total=27722 [2022-03-15 16:27:15,328 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 828 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 4354 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 4354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:27:15,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 505 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 4354 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 16:27:15,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7696 states. [2022-03-15 16:27:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7696 to 2969. [2022-03-15 16:27:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 3.253369272237197) internal successors, (9656), 2968 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 9656 transitions. [2022-03-15 16:27:15,417 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 9656 transitions. Word has length 34 [2022-03-15 16:27:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:27:15,417 INFO L470 AbstractCegarLoop]: Abstraction has 2969 states and 9656 transitions. [2022-03-15 16:27:15,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 9656 transitions. [2022-03-15 16:27:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:27:15,422 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:27:15,422 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:27:15,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 16:27:15,639 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,SelfDestructingSolverStorable11 [2022-03-15 16:27:15,639 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:27:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:27:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash 971839921, now seen corresponding path program 10 times [2022-03-15 16:27:15,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:27:15,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240398064] [2022-03-15 16:27:15,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:27:15,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:27:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:27:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:15,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:27:15,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240398064] [2022-03-15 16:27:15,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240398064] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:27:15,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359531867] [2022-03-15 16:27:15,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:27:15,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:27:15,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:27:15,961 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) [2022-03-15 16:27:15,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 16:27:15,991 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:27:15,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:27:15,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:27:15,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:27:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:16,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:27:17,936 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:17,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359531867] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:27:17,936 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:27:17,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-15 16:27:17,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157310481] [2022-03-15 16:27:17,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:27:17,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:27:17,937 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:27:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:27:17,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2215, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:27:17,938 INFO L87 Difference]: Start difference. First operand 2969 states and 9656 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:31,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:27:31,806 INFO L93 Difference]: Finished difference Result 10912 states and 33148 transitions. [2022-03-15 16:27:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-03-15 16:27:31,807 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:27:31,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:27:31,829 INFO L225 Difference]: With dead ends: 10912 [2022-03-15 16:27:31,829 INFO L226 Difference]: Without dead ends: 10686 [2022-03-15 16:27:31,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21166 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=9279, Invalid=42477, Unknown=0, NotChecked=0, Total=51756 [2022-03-15 16:27:31,833 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1151 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 16:27:31,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 698 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 16:27:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2022-03-15 16:27:31,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 3913. [2022-03-15 16:27:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 3.280930470347648) internal successors, (12835), 3912 states have internal predecessors, (12835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 12835 transitions. [2022-03-15 16:27:31,989 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 12835 transitions. Word has length 34 [2022-03-15 16:27:31,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:27:31,990 INFO L470 AbstractCegarLoop]: Abstraction has 3913 states and 12835 transitions. [2022-03-15 16:27:31,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 12835 transitions. [2022-03-15 16:27:31,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:27:31,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:27:31,999 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:27:32,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 16:27:32,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 16:27:32,233 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:27:32,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:27:32,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1964333485, now seen corresponding path program 11 times [2022-03-15 16:27:32,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:27:32,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226965446] [2022-03-15 16:27:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:27:32,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:27:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:27:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:32,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:27:32,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226965446] [2022-03-15 16:27:32,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226965446] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:27:32,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98290563] [2022-03-15 16:27:32,533 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:27:32,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:27:32,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:27:32,534 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) [2022-03-15 16:27:32,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 16:27:32,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 16:27:32,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:27:32,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:27:32,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:27:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:33,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:27:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:34,537 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98290563] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:27:34,537 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:27:34,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-15 16:27:34,538 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474831576] [2022-03-15 16:27:34,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:27:34,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:27:34,538 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:27:34,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:27:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2219, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:27:34,539 INFO L87 Difference]: Start difference. First operand 3913 states and 12835 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:46,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:27:46,817 INFO L93 Difference]: Finished difference Result 11044 states and 33819 transitions. [2022-03-15 16:27:46,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-03-15 16:27:46,817 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:27:46,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:27:46,867 INFO L225 Difference]: With dead ends: 11044 [2022-03-15 16:27:46,867 INFO L226 Difference]: Without dead ends: 10842 [2022-03-15 16:27:46,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25049 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=10854, Invalid=48438, Unknown=0, NotChecked=0, Total=59292 [2022-03-15 16:27:46,870 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1206 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 5389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:27:46,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 686 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 16:27:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2022-03-15 16:27:47,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 4299. [2022-03-15 16:27:47,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 4298 states have (on average 3.3187529083294556) internal successors, (14264), 4298 states have internal predecessors, (14264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:47,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 14264 transitions. [2022-03-15 16:27:47,137 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 14264 transitions. Word has length 34 [2022-03-15 16:27:47,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:27:47,137 INFO L470 AbstractCegarLoop]: Abstraction has 4299 states and 14264 transitions. [2022-03-15 16:27:47,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:27:47,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 14264 transitions. [2022-03-15 16:27:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:27:47,145 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:27:47,145 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:27:47,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 16:27:47,361 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,SelfDestructingSolverStorable13 [2022-03-15 16:27:47,361 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:27:47,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:27:47,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1613065811, now seen corresponding path program 12 times [2022-03-15 16:27:47,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:27:47,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947324529] [2022-03-15 16:27:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:27:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:27:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:27:47,771 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:47,771 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:27:47,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947324529] [2022-03-15 16:27:47,771 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947324529] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:27:47,771 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857364206] [2022-03-15 16:27:47,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 16:27:47,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:27:47,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:27:47,773 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) [2022-03-15 16:27:47,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 16:27:47,798 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-15 16:27:47,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:27:47,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:27:47,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:27:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:48,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:27:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:27:49,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857364206] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:27:49,816 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:27:49,816 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 18] total 48 [2022-03-15 16:27:49,816 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906331040] [2022-03-15 16:27:49,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:27:49,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 16:27:49,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:27:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 16:27:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 16:27:49,817 INFO L87 Difference]: Start difference. First operand 4299 states and 14264 transitions. Second operand has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:01,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:28:01,706 INFO L93 Difference]: Finished difference Result 10733 states and 33404 transitions. [2022-03-15 16:28:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-03-15 16:28:01,706 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:28:01,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:28:01,728 INFO L225 Difference]: With dead ends: 10733 [2022-03-15 16:28:01,729 INFO L226 Difference]: Without dead ends: 10515 [2022-03-15 16:28:01,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20891 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=9352, Invalid=41498, Unknown=0, NotChecked=0, Total=50850 [2022-03-15 16:28:01,733 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1236 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 4492 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:28:01,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 745 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4492 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 16:28:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2022-03-15 16:28:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 3833. [2022-03-15 16:28:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 3.2917536534446765) internal successors, (12614), 3832 states have internal predecessors, (12614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 12614 transitions. [2022-03-15 16:28:01,863 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 12614 transitions. Word has length 34 [2022-03-15 16:28:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:28:01,863 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 12614 transitions. [2022-03-15 16:28:01,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 12614 transitions. [2022-03-15 16:28:01,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:28:01,871 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:28:01,871 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:28:01,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-15 16:28:02,087 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,SelfDestructingSolverStorable14 [2022-03-15 16:28:02,087 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:28:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:28:02,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1621951143, now seen corresponding path program 13 times [2022-03-15 16:28:02,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:28:02,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447134653] [2022-03-15 16:28:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:28:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:28:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:28:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:02,395 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:28:02,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447134653] [2022-03-15 16:28:02,395 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447134653] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:28:02,395 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67463302] [2022-03-15 16:28:02,395 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 16:28:02,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:28:02,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:28:02,396 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) [2022-03-15 16:28:02,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 16:28:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:28:02,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 16:28:02,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:28:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:03,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:28:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:05,298 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67463302] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:28:05,298 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:28:05,298 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2022-03-15 16:28:05,298 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664919544] [2022-03-15 16:28:05,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:28:05,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-03-15 16:28:05,298 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:28:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-03-15 16:28:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2166, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 16:28:05,299 INFO L87 Difference]: Start difference. First operand 3833 states and 12614 transitions. Second operand has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:28:17,224 INFO L93 Difference]: Finished difference Result 10462 states and 32329 transitions. [2022-03-15 16:28:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-03-15 16:28:17,224 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:28:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:28:17,273 INFO L225 Difference]: With dead ends: 10462 [2022-03-15 16:28:17,273 INFO L226 Difference]: Without dead ends: 10307 [2022-03-15 16:28:17,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7919 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=3778, Invalid=17978, Unknown=0, NotChecked=0, Total=21756 [2022-03-15 16:28:17,275 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 682 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 16:28:17,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 598 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 16:28:17,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2022-03-15 16:28:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 4521. [2022-03-15 16:28:17,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 4520 states have (on average 3.308628318584071) internal successors, (14955), 4520 states have internal predecessors, (14955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 14955 transitions. [2022-03-15 16:28:17,436 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 14955 transitions. Word has length 34 [2022-03-15 16:28:17,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:28:17,436 INFO L470 AbstractCegarLoop]: Abstraction has 4521 states and 14955 transitions. [2022-03-15 16:28:17,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 14955 transitions. [2022-03-15 16:28:17,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:28:17,443 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:28:17,443 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:28:17,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-15 16:28:17,659 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,SelfDestructingSolverStorable15 [2022-03-15 16:28:17,659 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:28:17,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:28:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash 596520025, now seen corresponding path program 14 times [2022-03-15 16:28:17,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:28:17,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826759029] [2022-03-15 16:28:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:28:17,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:28:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:28:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:17,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:28:17,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826759029] [2022-03-15 16:28:17,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826759029] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:28:17,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16916418] [2022-03-15 16:28:17,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:28:17,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:28:17,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:28:17,863 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) [2022-03-15 16:28:17,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 16:28:17,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:28:17,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:28:17,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 16:28:17,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:28:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:18,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:28:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:19,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16916418] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:28:19,842 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:28:19,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 47 [2022-03-15 16:28:19,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374359551] [2022-03-15 16:28:19,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:28:19,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 16:28:19,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:28:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 16:28:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1896, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 16:28:19,843 INFO L87 Difference]: Start difference. First operand 4521 states and 14955 transitions. Second operand has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:28:34,124 INFO L93 Difference]: Finished difference Result 11942 states and 37849 transitions. [2022-03-15 16:28:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-03-15 16:28:34,124 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:28:34,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:28:34,145 INFO L225 Difference]: With dead ends: 11942 [2022-03-15 16:28:34,145 INFO L226 Difference]: Without dead ends: 11777 [2022-03-15 16:28:34,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20629 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=7611, Invalid=44145, Unknown=0, NotChecked=0, Total=51756 [2022-03-15 16:28:34,147 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 865 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 16:28:34,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 570 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 5286 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 16:28:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11777 states. [2022-03-15 16:28:34,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11777 to 4932. [2022-03-15 16:28:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4931 states have (on average 3.3050091259379437) internal successors, (16297), 4931 states have internal predecessors, (16297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 16297 transitions. [2022-03-15 16:28:34,297 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 16297 transitions. Word has length 34 [2022-03-15 16:28:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:28:34,297 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 16297 transitions. [2022-03-15 16:28:34,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 16297 transitions. [2022-03-15 16:28:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:28:34,308 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:28:34,308 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:28:34,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 16:28:34,523 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,SelfDestructingSolverStorable16 [2022-03-15 16:28:34,523 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:28:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:28:34,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1798267431, now seen corresponding path program 15 times [2022-03-15 16:28:34,524 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:28:34,524 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368788018] [2022-03-15 16:28:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:28:34,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:28:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:28:34,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:34,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:28:34,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368788018] [2022-03-15 16:28:34,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368788018] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:28:34,816 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15078801] [2022-03-15 16:28:34,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:28:34,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:28:34,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:28:34,818 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) [2022-03-15 16:28:34,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 16:28:34,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 16:28:34,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:28:34,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 16:28:34,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:28:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:35,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:28:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:36,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15078801] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:28:36,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:28:36,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-03-15 16:28:36,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919302675] [2022-03-15 16:28:36,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:28:36,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:28:36,933 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:28:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:28:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:28:36,934 INFO L87 Difference]: Start difference. First operand 4932 states and 16297 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:50,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:28:50,470 INFO L93 Difference]: Finished difference Result 16468 states and 52786 transitions. [2022-03-15 16:28:50,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-03-15 16:28:50,471 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:28:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:28:50,537 INFO L225 Difference]: With dead ends: 16468 [2022-03-15 16:28:50,537 INFO L226 Difference]: Without dead ends: 16303 [2022-03-15 16:28:50,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14557 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=7548, Invalid=32652, Unknown=0, NotChecked=0, Total=40200 [2022-03-15 16:28:50,539 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 764 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 4307 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 4769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 4307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:28:50,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 510 Invalid, 4769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 4307 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 16:28:50,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16303 states. [2022-03-15 16:28:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16303 to 6713. [2022-03-15 16:28:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6713 states, 6712 states have (on average 3.362485101311085) internal successors, (22569), 6712 states have internal predecessors, (22569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 22569 transitions. [2022-03-15 16:28:50,745 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 22569 transitions. Word has length 34 [2022-03-15 16:28:50,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:28:50,746 INFO L470 AbstractCegarLoop]: Abstraction has 6713 states and 22569 transitions. [2022-03-15 16:28:50,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:50,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 22569 transitions. [2022-03-15 16:28:50,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:28:50,759 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:28:50,759 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:28:50,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 16:28:50,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:28:50,975 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:28:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:28:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash 342899377, now seen corresponding path program 16 times [2022-03-15 16:28:50,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:28:50,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418978888] [2022-03-15 16:28:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:28:50,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:28:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:28:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:51,201 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:28:51,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418978888] [2022-03-15 16:28:51,201 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418978888] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:28:51,201 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611214453] [2022-03-15 16:28:51,201 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:28:51,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:28:51,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:28:51,202 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) [2022-03-15 16:28:51,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 16:28:51,229 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:28:51,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:28:51,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:28:51,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:28:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:51,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:28:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:28:54,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611214453] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:28:54,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:28:54,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 16:28:54,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591708147] [2022-03-15 16:28:54,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:28:54,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:28:54,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:28:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:28:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1809, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:28:54,363 INFO L87 Difference]: Start difference. First operand 6713 states and 22569 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:59,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:28:59,330 INFO L93 Difference]: Finished difference Result 12518 states and 40141 transitions. [2022-03-15 16:28:59,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-03-15 16:28:59,330 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:28:59,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:28:59,357 INFO L225 Difference]: With dead ends: 12518 [2022-03-15 16:28:59,357 INFO L226 Difference]: Without dead ends: 12273 [2022-03-15 16:28:59,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1649, Invalid=7471, Unknown=0, NotChecked=0, Total=9120 [2022-03-15 16:28:59,358 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 560 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 16:28:59,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 451 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 16:28:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2022-03-15 16:28:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 6834. [2022-03-15 16:28:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6834 states, 6833 states have (on average 3.3647007171081516) internal successors, (22991), 6833 states have internal predecessors, (22991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:59,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 22991 transitions. [2022-03-15 16:28:59,585 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 22991 transitions. Word has length 34 [2022-03-15 16:28:59,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:28:59,585 INFO L470 AbstractCegarLoop]: Abstraction has 6834 states and 22991 transitions. [2022-03-15 16:28:59,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:28:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 22991 transitions. [2022-03-15 16:28:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:28:59,599 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:28:59,599 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:28:59,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 16:28:59,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:28:59,815 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:28:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:28:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1264601517, now seen corresponding path program 17 times [2022-03-15 16:28:59,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:28:59,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262948535] [2022-03-15 16:28:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:28:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:28:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:29:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:00,096 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:29:00,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262948535] [2022-03-15 16:29:00,096 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262948535] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:29:00,096 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097694363] [2022-03-15 16:29:00,096 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:29:00,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:29:00,098 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) [2022-03-15 16:29:00,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 16:29:00,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 16:29:00,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:29:00,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:29:00,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:29:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:00,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:29:03,332 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:03,332 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097694363] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:29:03,332 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:29:03,332 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 16:29:03,332 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293710212] [2022-03-15 16:29:03,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:29:03,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:29:03,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:29:03,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:29:03,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1790, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:29:03,333 INFO L87 Difference]: Start difference. First operand 6834 states and 22991 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:29:10,177 INFO L93 Difference]: Finished difference Result 14485 states and 46677 transitions. [2022-03-15 16:29:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-03-15 16:29:10,177 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:29:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:29:10,205 INFO L225 Difference]: With dead ends: 14485 [2022-03-15 16:29:10,205 INFO L226 Difference]: Without dead ends: 14245 [2022-03-15 16:29:10,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2257, Invalid=9733, Unknown=0, NotChecked=0, Total=11990 [2022-03-15 16:29:10,207 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 602 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 16:29:10,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 394 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 16:29:10,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2022-03-15 16:29:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 6800. [2022-03-15 16:29:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 6799 states have (on average 3.3582879835269894) internal successors, (22833), 6799 states have internal predecessors, (22833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:10,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 22833 transitions. [2022-03-15 16:29:10,390 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 22833 transitions. Word has length 34 [2022-03-15 16:29:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:29:10,390 INFO L470 AbstractCegarLoop]: Abstraction has 6800 states and 22833 transitions. [2022-03-15 16:29:10,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 22833 transitions. [2022-03-15 16:29:10,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:29:10,401 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:29:10,401 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:29:10,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 16:29:10,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:10,611 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:29:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:29:10,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1194491481, now seen corresponding path program 18 times [2022-03-15 16:29:10,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:29:10,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113641594] [2022-03-15 16:29:10,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:29:10,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:29:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:29:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:10,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:29:10,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113641594] [2022-03-15 16:29:10,871 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113641594] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:29:10,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866751905] [2022-03-15 16:29:10,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 16:29:10,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:10,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:29:10,874 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) [2022-03-15 16:29:10,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 16:29:10,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 16:29:10,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:29:10,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:29:10,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:29:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:11,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:29:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:13,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866751905] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:29:13,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:29:13,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-15 16:29:13,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557589828] [2022-03-15 16:29:13,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:29:13,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 16:29:13,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:29:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 16:29:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1630, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 16:29:13,956 INFO L87 Difference]: Start difference. First operand 6800 states and 22833 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:29:20,451 INFO L93 Difference]: Finished difference Result 11835 states and 38385 transitions. [2022-03-15 16:29:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-03-15 16:29:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:29:20,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:29:20,474 INFO L225 Difference]: With dead ends: 11835 [2022-03-15 16:29:20,474 INFO L226 Difference]: Without dead ends: 11595 [2022-03-15 16:29:20,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2636 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1743, Invalid=7569, Unknown=0, NotChecked=0, Total=9312 [2022-03-15 16:29:20,475 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 544 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:29:20,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 246 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 16:29:20,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2022-03-15 16:29:20,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 6779. [2022-03-15 16:29:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 6778 states have (on average 3.357627618766598) internal successors, (22758), 6778 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 22758 transitions. [2022-03-15 16:29:20,647 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 22758 transitions. Word has length 34 [2022-03-15 16:29:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:29:20,647 INFO L470 AbstractCegarLoop]: Abstraction has 6779 states and 22758 transitions. [2022-03-15 16:29:20,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 22758 transitions. [2022-03-15 16:29:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:29:20,659 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:29:20,659 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:29:20,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-15 16:29:20,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:20,877 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:29:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:29:20,877 INFO L85 PathProgramCache]: Analyzing trace with hash 188911329, now seen corresponding path program 19 times [2022-03-15 16:29:20,877 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:29:20,877 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044216830] [2022-03-15 16:29:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:29:20,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:29:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:29:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:21,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:29:21,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044216830] [2022-03-15 16:29:21,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044216830] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:29:21,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968521230] [2022-03-15 16:29:21,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 16:29:21,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:21,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:29:21,129 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) [2022-03-15 16:29:21,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 16:29:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:29:21,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:29:21,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:29:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:21,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:29:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:24,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968521230] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:29:24,590 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:29:24,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 16:29:24,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679252504] [2022-03-15 16:29:24,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:29:24,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:29:24,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:29:24,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:29:24,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:29:24,592 INFO L87 Difference]: Start difference. First operand 6779 states and 22758 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:29:30,014 INFO L93 Difference]: Finished difference Result 11575 states and 37220 transitions. [2022-03-15 16:29:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-15 16:29:30,015 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:29:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:29:30,037 INFO L225 Difference]: With dead ends: 11575 [2022-03-15 16:29:30,038 INFO L226 Difference]: Without dead ends: 11436 [2022-03-15 16:29:30,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2814 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1849, Invalid=7463, Unknown=0, NotChecked=0, Total=9312 [2022-03-15 16:29:30,039 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 767 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:29:30,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 435 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 16:29:30,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2022-03-15 16:29:30,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 6931. [2022-03-15 16:29:30,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6931 states, 6930 states have (on average 3.3593073593073592) internal successors, (23280), 6930 states have internal predecessors, (23280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 23280 transitions. [2022-03-15 16:29:30,194 INFO L78 Accepts]: Start accepts. Automaton has 6931 states and 23280 transitions. Word has length 34 [2022-03-15 16:29:30,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:29:30,194 INFO L470 AbstractCegarLoop]: Abstraction has 6931 states and 23280 transitions. [2022-03-15 16:29:30,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:30,195 INFO L276 IsEmpty]: Start isEmpty. Operand 6931 states and 23280 transitions. [2022-03-15 16:29:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:29:30,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:29:30,206 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:29:30,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-15 16:29:30,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:30,420 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:29:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:29:30,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1337834849, now seen corresponding path program 20 times [2022-03-15 16:29:30,420 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:29:30,420 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224234295] [2022-03-15 16:29:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:29:30,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:29:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:29:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:30,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:29:30,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224234295] [2022-03-15 16:29:30,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224234295] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:29:30,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349258648] [2022-03-15 16:29:30,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:29:30,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:30,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:29:30,695 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) [2022-03-15 16:29:30,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:29:30,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:29:30,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:29:30,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:29:30,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 16:29:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:31,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:29:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:34,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349258648] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:29:34,102 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:29:34,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-15 16:29:34,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636511498] [2022-03-15 16:29:34,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:29:34,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 16:29:34,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:29:34,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 16:29:34,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 16:29:34,103 INFO L87 Difference]: Start difference. First operand 6931 states and 23280 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:41,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:29:41,308 INFO L93 Difference]: Finished difference Result 13668 states and 44628 transitions. [2022-03-15 16:29:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-03-15 16:29:41,308 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:29:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:29:41,338 INFO L225 Difference]: With dead ends: 13668 [2022-03-15 16:29:41,338 INFO L226 Difference]: Without dead ends: 13441 [2022-03-15 16:29:41,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4700 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=2406, Invalid=11636, Unknown=0, NotChecked=0, Total=14042 [2022-03-15 16:29:41,340 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 735 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 16:29:41,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 368 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 16:29:41,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13441 states. [2022-03-15 16:29:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13441 to 6968. [2022-03-15 16:29:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6967 states have (on average 3.3585474379216307) internal successors, (23399), 6967 states have internal predecessors, (23399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 23399 transitions. [2022-03-15 16:29:41,527 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 23399 transitions. Word has length 34 [2022-03-15 16:29:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:29:41,527 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 23399 transitions. [2022-03-15 16:29:41,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 23399 transitions. [2022-03-15 16:29:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:29:41,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:29:41,539 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:29:41,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 16:29:41,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:41,755 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:29:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:29:41,755 INFO L85 PathProgramCache]: Analyzing trace with hash -982878999, now seen corresponding path program 21 times [2022-03-15 16:29:41,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:29:41,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443163780] [2022-03-15 16:29:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:29:41,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:29:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:29:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:42,083 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:29:42,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443163780] [2022-03-15 16:29:42,083 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443163780] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:29:42,083 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637481209] [2022-03-15 16:29:42,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:29:42,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:29:42,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:29:42,084 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) [2022-03-15 16:29:42,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 16:29:42,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 16:29:42,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:29:42,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 16:29:42,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:29:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:42,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:29:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:29:44,009 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637481209] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:29:44,009 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:29:44,009 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-03-15 16:29:44,009 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471000723] [2022-03-15 16:29:44,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:29:44,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:29:44,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:29:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:29:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:29:44,010 INFO L87 Difference]: Start difference. First operand 6968 states and 23399 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:59,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:29:59,263 INFO L93 Difference]: Finished difference Result 20771 states and 67025 transitions. [2022-03-15 16:29:59,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-03-15 16:29:59,264 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:29:59,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:29:59,311 INFO L225 Difference]: With dead ends: 20771 [2022-03-15 16:29:59,312 INFO L226 Difference]: Without dead ends: 20597 [2022-03-15 16:29:59,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17435 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=8467, Invalid=37543, Unknown=0, NotChecked=0, Total=46010 [2022-03-15 16:29:59,314 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 916 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 4447 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:29:59,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 589 Invalid, 4979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 4447 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 16:29:59,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20597 states. [2022-03-15 16:29:59,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20597 to 8044. [2022-03-15 16:29:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8044 states, 8043 states have (on average 3.3851796593310954) internal successors, (27227), 8043 states have internal predecessors, (27227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 27227 transitions. [2022-03-15 16:29:59,607 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 27227 transitions. Word has length 34 [2022-03-15 16:29:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:29:59,607 INFO L470 AbstractCegarLoop]: Abstraction has 8044 states and 27227 transitions. [2022-03-15 16:29:59,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:29:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 27227 transitions. [2022-03-15 16:29:59,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:29:59,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:29:59,620 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:29:59,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 16:29:59,827 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,SelfDestructingSolverStorable23 [2022-03-15 16:29:59,827 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:29:59,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:29:59,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1158287809, now seen corresponding path program 22 times [2022-03-15 16:29:59,828 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:29:59,828 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580179544] [2022-03-15 16:29:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:29:59,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:29:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:30:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:00,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:30:00,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580179544] [2022-03-15 16:30:00,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580179544] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:30:00,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536437166] [2022-03-15 16:30:00,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:30:00,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:30:00,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:30:00,112 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) [2022-03-15 16:30:00,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 16:30:00,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:30:00,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:30:00,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:30:00,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:30:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:00,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:30:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:03,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536437166] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:30:03,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:30:03,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 16:30:03,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260635114] [2022-03-15 16:30:03,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:30:03,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:30:03,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:30:03,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:30:03,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1836, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:30:03,180 INFO L87 Difference]: Start difference. First operand 8044 states and 27227 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:30:11,286 INFO L93 Difference]: Finished difference Result 17291 states and 55744 transitions. [2022-03-15 16:30:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-03-15 16:30:11,286 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:30:11,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:30:11,320 INFO L225 Difference]: With dead ends: 17291 [2022-03-15 16:30:11,320 INFO L226 Difference]: Without dead ends: 17083 [2022-03-15 16:30:11,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5521 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2857, Invalid=13913, Unknown=0, NotChecked=0, Total=16770 [2022-03-15 16:30:11,321 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 664 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 16:30:11,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 422 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 16:30:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17083 states. [2022-03-15 16:30:11,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17083 to 8543. [2022-03-15 16:30:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8543 states, 8542 states have (on average 3.403418403184266) internal successors, (29072), 8542 states have internal predecessors, (29072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8543 states to 8543 states and 29072 transitions. [2022-03-15 16:30:11,585 INFO L78 Accepts]: Start accepts. Automaton has 8543 states and 29072 transitions. Word has length 34 [2022-03-15 16:30:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:30:11,585 INFO L470 AbstractCegarLoop]: Abstraction has 8543 states and 29072 transitions. [2022-03-15 16:30:11,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8543 states and 29072 transitions. [2022-03-15 16:30:11,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:30:11,597 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:30:11,597 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:30:11,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 16:30:11,811 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,SelfDestructingSolverStorable24 [2022-03-15 16:30:11,811 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:30:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:30:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2079989949, now seen corresponding path program 23 times [2022-03-15 16:30:11,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:30:11,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32837116] [2022-03-15 16:30:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:30:11,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:30:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:30:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:12,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:30:12,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32837116] [2022-03-15 16:30:12,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32837116] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:30:12,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390350632] [2022-03-15 16:30:12,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:30:12,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:30:12,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:30:12,057 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) [2022-03-15 16:30:12,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 16:30:12,079 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 16:30:12,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:30:12,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:30:12,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:30:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:12,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:30:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:14,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390350632] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:30:14,941 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:30:14,941 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 16:30:14,941 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039020625] [2022-03-15 16:30:14,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:30:14,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:30:14,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:30:14,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:30:14,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:30:14,943 INFO L87 Difference]: Start difference. First operand 8543 states and 29072 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:23,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:30:23,110 INFO L93 Difference]: Finished difference Result 18582 states and 60299 transitions. [2022-03-15 16:30:23,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-03-15 16:30:23,110 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:30:23,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:30:23,156 INFO L225 Difference]: With dead ends: 18582 [2022-03-15 16:30:23,157 INFO L226 Difference]: Without dead ends: 18404 [2022-03-15 16:30:23,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6402 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3342, Invalid=15290, Unknown=0, NotChecked=0, Total=18632 [2022-03-15 16:30:23,161 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 689 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 16:30:23,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 360 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 16:30:23,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2022-03-15 16:30:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 8453. [2022-03-15 16:30:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8453 states, 8452 states have (on average 3.3917415996213913) internal successors, (28667), 8452 states have internal predecessors, (28667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8453 states to 8453 states and 28667 transitions. [2022-03-15 16:30:23,425 INFO L78 Accepts]: Start accepts. Automaton has 8453 states and 28667 transitions. Word has length 34 [2022-03-15 16:30:23,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:30:23,425 INFO L470 AbstractCegarLoop]: Abstraction has 8453 states and 28667 transitions. [2022-03-15 16:30:23,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:23,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8453 states and 28667 transitions. [2022-03-15 16:30:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:30:23,439 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:30:23,439 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:30:23,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 16:30:23,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 16:30:23,645 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:30:23,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:30:23,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2009879913, now seen corresponding path program 24 times [2022-03-15 16:30:23,646 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:30:23,646 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573576624] [2022-03-15 16:30:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:30:23,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:30:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:30:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:23,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:30:23,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573576624] [2022-03-15 16:30:23,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573576624] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:30:23,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415184564] [2022-03-15 16:30:23,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 16:30:23,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:30:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:30:23,962 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) [2022-03-15 16:30:23,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 16:30:23,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 16:30:23,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:30:23,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:30:23,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:30:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:24,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:30:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:26,815 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415184564] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:30:26,815 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:30:26,815 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-15 16:30:26,815 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451130935] [2022-03-15 16:30:26,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:30:26,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 16:30:26,815 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:30:26,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 16:30:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 16:30:26,816 INFO L87 Difference]: Start difference. First operand 8453 states and 28667 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:30:32,644 INFO L93 Difference]: Finished difference Result 15036 states and 49177 transitions. [2022-03-15 16:30:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-03-15 16:30:32,644 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:30:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:30:32,701 INFO L225 Difference]: With dead ends: 15036 [2022-03-15 16:30:32,702 INFO L226 Difference]: Without dead ends: 14858 [2022-03-15 16:30:32,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1795, Invalid=8305, Unknown=0, NotChecked=0, Total=10100 [2022-03-15 16:30:32,703 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 565 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:30:32,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 249 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 16:30:32,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14858 states. [2022-03-15 16:30:32,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14858 to 8423. [2022-03-15 16:30:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8422 states have (on average 3.392780812158632) internal successors, (28574), 8422 states have internal predecessors, (28574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 28574 transitions. [2022-03-15 16:30:32,929 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 28574 transitions. Word has length 34 [2022-03-15 16:30:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:30:32,929 INFO L470 AbstractCegarLoop]: Abstraction has 8423 states and 28574 transitions. [2022-03-15 16:30:32,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 28574 transitions. [2022-03-15 16:30:32,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:30:32,943 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:30:32,943 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:30:32,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 16:30:33,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:30:33,149 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:30:33,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:30:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1818983591, now seen corresponding path program 25 times [2022-03-15 16:30:33,149 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:30:33,149 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512189599] [2022-03-15 16:30:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:30:33,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:30:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:30:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:33,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:30:33,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512189599] [2022-03-15 16:30:33,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512189599] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:30:33,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570376290] [2022-03-15 16:30:33,453 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 16:30:33,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:30:33,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:30:33,454 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) [2022-03-15 16:30:33,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 16:30:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:30:33,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 16:30:33,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:30:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:34,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:30:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:36,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570376290] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:30:36,108 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:30:36,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-03-15 16:30:36,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916168675] [2022-03-15 16:30:36,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:30:36,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 16:30:36,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:30:36,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 16:30:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2072, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 16:30:36,109 INFO L87 Difference]: Start difference. First operand 8423 states and 28574 transitions. Second operand has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:46,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:30:46,421 INFO L93 Difference]: Finished difference Result 15516 states and 50211 transitions. [2022-03-15 16:30:46,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-03-15 16:30:46,424 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:30:46,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:30:46,457 INFO L225 Difference]: With dead ends: 15516 [2022-03-15 16:30:46,457 INFO L226 Difference]: Without dead ends: 15379 [2022-03-15 16:30:46,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9536 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=5079, Invalid=22311, Unknown=0, NotChecked=0, Total=27390 [2022-03-15 16:30:46,459 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 751 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 16:30:46,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 545 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 16:30:46,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15379 states. [2022-03-15 16:30:46,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15379 to 8748. [2022-03-15 16:30:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8748 states, 8747 states have (on average 3.406082085286384) internal successors, (29793), 8747 states have internal predecessors, (29793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:46,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8748 states to 8748 states and 29793 transitions. [2022-03-15 16:30:46,709 INFO L78 Accepts]: Start accepts. Automaton has 8748 states and 29793 transitions. Word has length 34 [2022-03-15 16:30:46,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:30:46,710 INFO L470 AbstractCegarLoop]: Abstraction has 8748 states and 29793 transitions. [2022-03-15 16:30:46,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:30:46,710 INFO L276 IsEmpty]: Start isEmpty. Operand 8748 states and 29793 transitions. [2022-03-15 16:30:46,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:30:46,759 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:30:46,759 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:30:46,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 16:30:46,960 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,SelfDestructingSolverStorable27 [2022-03-15 16:30:46,960 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:30:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:30:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash -472964259, now seen corresponding path program 26 times [2022-03-15 16:30:46,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:30:46,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436461500] [2022-03-15 16:30:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:30:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:30:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:30:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:47,184 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:30:47,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436461500] [2022-03-15 16:30:47,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436461500] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:30:47,184 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127474071] [2022-03-15 16:30:47,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:30:47,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:30:47,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:30:47,185 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) [2022-03-15 16:30:47,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 16:30:47,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:30:47,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:30:47,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 16:30:47,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:30:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:47,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:30:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:30:49,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127474071] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:30:49,719 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:30:49,719 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-03-15 16:30:49,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163218877] [2022-03-15 16:30:49,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:30:49,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:30:49,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:30:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:30:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:30:49,720 INFO L87 Difference]: Start difference. First operand 8748 states and 29793 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:05,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:31:05,356 INFO L93 Difference]: Finished difference Result 16682 states and 54028 transitions. [2022-03-15 16:31:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-03-15 16:31:05,356 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:31:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:31:05,392 INFO L225 Difference]: With dead ends: 16682 [2022-03-15 16:31:05,392 INFO L226 Difference]: Without dead ends: 16535 [2022-03-15 16:31:05,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18050 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=7846, Invalid=38594, Unknown=0, NotChecked=0, Total=46440 [2022-03-15 16:31:05,396 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 921 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-15 16:31:05,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 619 Invalid, 5689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 5158 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-03-15 16:31:05,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16535 states. [2022-03-15 16:31:05,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16535 to 8674. [2022-03-15 16:31:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 3.401937046004843) internal successors, (29505), 8673 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 29505 transitions. [2022-03-15 16:31:05,661 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 29505 transitions. Word has length 34 [2022-03-15 16:31:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:31:05,662 INFO L470 AbstractCegarLoop]: Abstraction has 8674 states and 29505 transitions. [2022-03-15 16:31:05,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:05,662 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 29505 transitions. [2022-03-15 16:31:05,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:31:05,676 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:31:05,676 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:31:05,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 16:31:05,891 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,SelfDestructingSolverStorable28 [2022-03-15 16:31:05,891 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:31:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:31:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash 445215345, now seen corresponding path program 27 times [2022-03-15 16:31:05,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:31:05,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561922041] [2022-03-15 16:31:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:31:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:31:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:31:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:06,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:31:06,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561922041] [2022-03-15 16:31:06,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561922041] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:31:06,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893426327] [2022-03-15 16:31:06,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:31:06,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:31:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:31:06,181 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) [2022-03-15 16:31:06,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 16:31:06,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 16:31:06,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:31:06,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:31:06,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:31:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:07,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:31:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:10,031 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893426327] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:31:10,031 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:31:10,031 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-15 16:31:10,031 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713216263] [2022-03-15 16:31:10,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:31:10,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 16:31:10,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:31:10,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 16:31:10,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 16:31:10,032 INFO L87 Difference]: Start difference. First operand 8674 states and 29505 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:21,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:31:21,331 INFO L93 Difference]: Finished difference Result 27617 states and 90885 transitions. [2022-03-15 16:31:21,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-15 16:31:21,331 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:31:21,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:31:21,405 INFO L225 Difference]: With dead ends: 27617 [2022-03-15 16:31:21,405 INFO L226 Difference]: Without dead ends: 27408 [2022-03-15 16:31:21,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8172 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=4436, Invalid=19744, Unknown=0, NotChecked=0, Total=24180 [2022-03-15 16:31:21,407 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 700 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:31:21,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 582 Invalid, 4796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 16:31:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27408 states. [2022-03-15 16:31:21,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27408 to 12080. [2022-03-15 16:31:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12080 states, 12079 states have (on average 3.4684990479344315) internal successors, (41896), 12079 states have internal predecessors, (41896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:21,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12080 states to 12080 states and 41896 transitions. [2022-03-15 16:31:21,828 INFO L78 Accepts]: Start accepts. Automaton has 12080 states and 41896 transitions. Word has length 34 [2022-03-15 16:31:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:31:21,828 INFO L470 AbstractCegarLoop]: Abstraction has 12080 states and 41896 transitions. [2022-03-15 16:31:21,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12080 states and 41896 transitions. [2022-03-15 16:31:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:31:21,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:31:21,847 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:31:21,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 16:31:22,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:31:22,064 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:31:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:31:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1498004759, now seen corresponding path program 28 times [2022-03-15 16:31:22,064 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:31:22,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354829576] [2022-03-15 16:31:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:31:22,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:31:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:31:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:22,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:31:22,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354829576] [2022-03-15 16:31:22,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354829576] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:31:22,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584587333] [2022-03-15 16:31:22,367 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:31:22,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:31:22,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:31:22,372 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) [2022-03-15 16:31:22,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 16:31:22,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:31:22,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:31:22,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:31:22,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:31:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:23,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:31:25,993 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:25,994 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584587333] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:31:25,994 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:31:25,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 16:31:25,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665017849] [2022-03-15 16:31:25,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:31:25,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:31:25,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:31:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:31:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:31:25,995 INFO L87 Difference]: Start difference. First operand 12080 states and 41896 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:31:32,690 INFO L93 Difference]: Finished difference Result 26957 states and 90433 transitions. [2022-03-15 16:31:32,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-03-15 16:31:32,691 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:31:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:31:32,755 INFO L225 Difference]: With dead ends: 26957 [2022-03-15 16:31:32,755 INFO L226 Difference]: Without dead ends: 26819 [2022-03-15 16:31:32,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3170, Invalid=11592, Unknown=0, NotChecked=0, Total=14762 [2022-03-15 16:31:32,756 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 824 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-15 16:31:32,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 340 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-15 16:31:32,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26819 states. [2022-03-15 16:31:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26819 to 14045. [2022-03-15 16:31:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 14044 states have (on average 3.498433494730846) internal successors, (49132), 14044 states have internal predecessors, (49132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:33,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 49132 transitions. [2022-03-15 16:31:33,240 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 49132 transitions. Word has length 34 [2022-03-15 16:31:33,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:31:33,240 INFO L470 AbstractCegarLoop]: Abstraction has 14045 states and 49132 transitions. [2022-03-15 16:31:33,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 49132 transitions. [2022-03-15 16:31:33,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:31:33,266 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:31:33,266 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:31:33,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-15 16:31:33,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:31:33,479 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:31:33,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:31:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash -870461771, now seen corresponding path program 29 times [2022-03-15 16:31:33,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:31:33,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118054274] [2022-03-15 16:31:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:31:33,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:31:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:31:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:33,775 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:31:33,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118054274] [2022-03-15 16:31:33,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118054274] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:31:33,775 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682020438] [2022-03-15 16:31:33,775 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:31:33,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:31:33,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:31:33,780 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) [2022-03-15 16:31:33,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 16:31:33,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 16:31:33,802 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:31:33,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:31:33,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:31:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:34,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:31:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:37,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682020438] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:31:37,870 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:31:37,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 16:31:37,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655141153] [2022-03-15 16:31:37,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:31:37,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:31:37,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:31:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:31:37,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1826, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:31:37,871 INFO L87 Difference]: Start difference. First operand 14045 states and 49132 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:31:53,739 INFO L93 Difference]: Finished difference Result 27731 states and 91215 transitions. [2022-03-15 16:31:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-15 16:31:53,739 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:31:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:31:53,829 INFO L225 Difference]: With dead ends: 27731 [2022-03-15 16:31:53,829 INFO L226 Difference]: Without dead ends: 27518 [2022-03-15 16:31:53,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=5374, Invalid=24382, Unknown=0, NotChecked=0, Total=29756 [2022-03-15 16:31:53,831 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 792 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 16:31:53,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 686 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3553 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 16:31:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27518 states. [2022-03-15 16:31:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27518 to 15571. [2022-03-15 16:31:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 3.5063583815028903) internal successors, (54594), 15570 states have internal predecessors, (54594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:54,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 54594 transitions. [2022-03-15 16:31:54,353 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 54594 transitions. Word has length 34 [2022-03-15 16:31:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:31:54,353 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 54594 transitions. [2022-03-15 16:31:54,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:31:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 54594 transitions. [2022-03-15 16:31:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:31:54,380 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:31:54,380 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:31:54,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-15 16:31:54,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:31:54,596 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:31:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:31:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash 278461749, now seen corresponding path program 30 times [2022-03-15 16:31:54,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:31:54,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787782102] [2022-03-15 16:31:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:31:54,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:31:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:31:55,118 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:55,118 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:31:55,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787782102] [2022-03-15 16:31:55,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787782102] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:31:55,118 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847816288] [2022-03-15 16:31:55,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 16:31:55,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:31:55,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:31:55,119 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) [2022-03-15 16:31:55,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 16:31:55,144 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 16:31:55,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:31:55,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:31:55,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:31:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:56,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:31:58,948 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:31:58,948 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847816288] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:31:58,948 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:31:58,948 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-15 16:31:58,948 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337829746] [2022-03-15 16:31:58,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:31:58,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 16:31:58,949 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:31:58,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 16:31:58,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1649, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 16:31:58,949 INFO L87 Difference]: Start difference. First operand 15571 states and 54594 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:32:09,462 INFO L93 Difference]: Finished difference Result 28288 states and 95943 transitions. [2022-03-15 16:32:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-03-15 16:32:09,463 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:32:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:32:09,558 INFO L225 Difference]: With dead ends: 28288 [2022-03-15 16:32:09,558 INFO L226 Difference]: Without dead ends: 28097 [2022-03-15 16:32:09,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8540 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=4162, Invalid=20018, Unknown=0, NotChecked=0, Total=24180 [2022-03-15 16:32:09,560 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 722 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 4611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 16:32:09,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 413 Invalid, 4611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 16:32:09,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28097 states. [2022-03-15 16:32:09,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28097 to 15481. [2022-03-15 16:32:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 15480 states have (on average 3.5050387596899224) internal successors, (54258), 15480 states have internal predecessors, (54258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:10,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 54258 transitions. [2022-03-15 16:32:10,024 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 54258 transitions. Word has length 34 [2022-03-15 16:32:10,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:32:10,024 INFO L470 AbstractCegarLoop]: Abstraction has 15481 states and 54258 transitions. [2022-03-15 16:32:10,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:10,024 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 54258 transitions. [2022-03-15 16:32:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:32:10,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:32:10,050 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:32:10,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 16:32:10,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:32:10,252 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:32:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:32:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash 726875713, now seen corresponding path program 31 times [2022-03-15 16:32:10,252 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:32:10,252 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278258293] [2022-03-15 16:32:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:32:10,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:32:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:32:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:10,481 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:32:10,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278258293] [2022-03-15 16:32:10,481 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278258293] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:32:10,481 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153544962] [2022-03-15 16:32:10,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 16:32:10,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:32:10,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:32:10,482 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) [2022-03-15 16:32:10,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 16:32:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:32:10,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:32:10,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:32:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:11,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:32:13,856 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:13,857 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153544962] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:32:13,857 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:32:13,857 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-15 16:32:13,857 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718412823] [2022-03-15 16:32:13,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:32:13,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 16:32:13,857 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:32:13,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 16:32:13,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 16:32:13,858 INFO L87 Difference]: Start difference. First operand 15481 states and 54258 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:21,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:32:21,042 INFO L93 Difference]: Finished difference Result 29297 states and 98478 transitions. [2022-03-15 16:32:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-03-15 16:32:21,042 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:32:21,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:32:21,128 INFO L225 Difference]: With dead ends: 29297 [2022-03-15 16:32:21,128 INFO L226 Difference]: Without dead ends: 29071 [2022-03-15 16:32:21,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6575 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3924, Invalid=15258, Unknown=0, NotChecked=0, Total=19182 [2022-03-15 16:32:21,129 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 594 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 3712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 16:32:21,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 430 Invalid, 3712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 16:32:21,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2022-03-15 16:32:21,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 17955. [2022-03-15 16:32:21,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17955 states, 17954 states have (on average 3.5179904199621252) internal successors, (63162), 17954 states have internal predecessors, (63162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:21,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 63162 transitions. [2022-03-15 16:32:21,661 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 63162 transitions. Word has length 34 [2022-03-15 16:32:21,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:32:21,662 INFO L470 AbstractCegarLoop]: Abstraction has 17955 states and 63162 transitions. [2022-03-15 16:32:21,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:21,662 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 63162 transitions. [2022-03-15 16:32:21,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 16:32:21,691 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:32:21,691 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, 1, 1, 1, 1, 1, 1] [2022-03-15 16:32:21,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-15 16:32:21,895 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,SelfDestructingSolverStorable33 [2022-03-15 16:32:21,895 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:32:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:32:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1648577853, now seen corresponding path program 32 times [2022-03-15 16:32:21,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:32:21,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031777620] [2022-03-15 16:32:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:32:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:32:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:32:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:22,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:32:22,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031777620] [2022-03-15 16:32:22,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031777620] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:32:22,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719805503] [2022-03-15 16:32:22,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:32:22,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:32:22,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:32:22,215 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) [2022-03-15 16:32:22,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 16:32:22,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:32:22,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:32:22,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 16:32:22,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:32:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:23,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:32:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:25,573 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719805503] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:32:25,573 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:32:25,573 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-03-15 16:32:25,573 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436163556] [2022-03-15 16:32:25,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:32:25,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 16:32:25,573 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:32:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 16:32:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 16:32:25,574 INFO L87 Difference]: Start difference. First operand 17955 states and 63162 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:32:31,744 INFO L93 Difference]: Finished difference Result 29870 states and 101083 transitions. [2022-03-15 16:32:31,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-03-15 16:32:31,744 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-03-15 16:32:31,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:32:31,821 INFO L225 Difference]: With dead ends: 29870 [2022-03-15 16:32:31,822 INFO L226 Difference]: Without dead ends: 29732 [2022-03-15 16:32:31,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5259 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3295, Invalid=12961, Unknown=0, NotChecked=0, Total=16256 [2022-03-15 16:32:31,823 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 455 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 16:32:31,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 333 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3406 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 16:32:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29732 states. [2022-03-15 16:32:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29732 to 18408. [2022-03-15 16:32:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18408 states, 18407 states have (on average 3.5227359156842506) internal successors, (64843), 18407 states have internal predecessors, (64843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18408 states to 18408 states and 64843 transitions. [2022-03-15 16:32:32,348 INFO L78 Accepts]: Start accepts. Automaton has 18408 states and 64843 transitions. Word has length 34 [2022-03-15 16:32:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:32:32,348 INFO L470 AbstractCegarLoop]: Abstraction has 18408 states and 64843 transitions. [2022-03-15 16:32:32,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 18408 states and 64843 transitions. [2022-03-15 16:32:32,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:32:32,378 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:32:32,378 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:32:32,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-15 16:32:32,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:32:32,584 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:32:32,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:32:32,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581361, now seen corresponding path program 33 times [2022-03-15 16:32:32,585 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:32:32,585 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310507704] [2022-03-15 16:32:32,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:32:32,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:32:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:32:32,883 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:32:32,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:32:32,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310507704] [2022-03-15 16:32:32,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310507704] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:32:32,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809450047] [2022-03-15 16:32:32,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:32:32,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:32:32,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:32:32,884 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) [2022-03-15 16:32:32,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 16:32:32,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-15 16:32:32,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:32:32,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:32:32,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:32:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:33,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:32:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:35,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809450047] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:32:35,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:32:35,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-03-15 16:32:35,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879641657] [2022-03-15 16:32:35,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:32:35,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 16:32:35,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:32:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 16:32:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2038, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 16:32:35,962 INFO L87 Difference]: Start difference. First operand 18408 states and 64843 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:32:51,576 INFO L93 Difference]: Finished difference Result 39425 states and 133315 transitions. [2022-03-15 16:32:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-03-15 16:32:51,576 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:32:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:32:51,689 INFO L225 Difference]: With dead ends: 39425 [2022-03-15 16:32:51,690 INFO L226 Difference]: Without dead ends: 39171 [2022-03-15 16:32:51,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13482 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=5776, Invalid=30896, Unknown=0, NotChecked=0, Total=36672 [2022-03-15 16:32:51,692 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 928 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-15 16:32:51,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 596 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4462 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-03-15 16:32:51,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39171 states. [2022-03-15 16:32:52,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39171 to 20370. [2022-03-15 16:32:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20370 states, 20369 states have (on average 3.524424370366734) internal successors, (71789), 20369 states have internal predecessors, (71789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:52,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20370 states to 20370 states and 71789 transitions. [2022-03-15 16:32:52,395 INFO L78 Accepts]: Start accepts. Automaton has 20370 states and 71789 transitions. Word has length 36 [2022-03-15 16:32:52,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:32:52,395 INFO L470 AbstractCegarLoop]: Abstraction has 20370 states and 71789 transitions. [2022-03-15 16:32:52,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:32:52,395 INFO L276 IsEmpty]: Start isEmpty. Operand 20370 states and 71789 transitions. [2022-03-15 16:32:52,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:32:52,428 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:32:52,428 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:32:52,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 16:32:52,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:32:52,631 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:32:52,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:32:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash 705856911, now seen corresponding path program 34 times [2022-03-15 16:32:52,632 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:32:52,632 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74744012] [2022-03-15 16:32:52,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:32:52,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:32:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:32:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:32:52,903 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:32:52,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74744012] [2022-03-15 16:32:52,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74744012] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:32:52,903 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311238916] [2022-03-15 16:32:52,903 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:32:52,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:32:52,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:32:52,924 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) [2022-03-15 16:32:52,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 16:32:52,947 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:32:52,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:32:52,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 16:32:52,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:32:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:54,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:32:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:32:57,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311238916] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:32:57,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:32:57,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2022-03-15 16:32:57,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747242605] [2022-03-15 16:32:57,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:32:57,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:32:57,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:32:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:32:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2203, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:32:57,913 INFO L87 Difference]: Start difference. First operand 20370 states and 71789 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:33:18,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:33:18,546 INFO L93 Difference]: Finished difference Result 37640 states and 127007 transitions. [2022-03-15 16:33:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-03-15 16:33:18,546 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:33:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:33:18,636 INFO L225 Difference]: With dead ends: 37640 [2022-03-15 16:33:18,636 INFO L226 Difference]: Without dead ends: 37431 [2022-03-15 16:33:18,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10801 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=5044, Invalid=24712, Unknown=0, NotChecked=0, Total=29756 [2022-03-15 16:33:18,637 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 749 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 16:33:18,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 810 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 16:33:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37431 states. [2022-03-15 16:33:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37431 to 22320. [2022-03-15 16:33:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22320 states, 22319 states have (on average 3.5096554505130158) internal successors, (78332), 22319 states have internal predecessors, (78332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:33:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22320 states to 22320 states and 78332 transitions. [2022-03-15 16:33:19,350 INFO L78 Accepts]: Start accepts. Automaton has 22320 states and 78332 transitions. Word has length 36 [2022-03-15 16:33:19,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:33:19,350 INFO L470 AbstractCegarLoop]: Abstraction has 22320 states and 78332 transitions. [2022-03-15 16:33:19,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:33:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 22320 states and 78332 transitions. [2022-03-15 16:33:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:33:19,388 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:33:19,388 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:33:19,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-15 16:33:19,601 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,SelfDestructingSolverStorable36 [2022-03-15 16:33:19,601 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:33:19,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:33:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash -132070257, now seen corresponding path program 35 times [2022-03-15 16:33:19,602 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:33:19,602 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725211976] [2022-03-15 16:33:19,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:33:19,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:33:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:33:19,906 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 16:33:19,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:33:19,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725211976] [2022-03-15 16:33:19,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725211976] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:33:19,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137955647] [2022-03-15 16:33:19,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:33:19,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:33:19,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:33:19,908 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) [2022-03-15 16:33:19,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 16:33:19,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 16:33:19,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:33:19,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 16:33:19,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:33:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:33:20,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:33:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:33:23,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137955647] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:33:23,353 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:33:23,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-03-15 16:33:23,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033896657] [2022-03-15 16:33:23,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:33:23,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-15 16:33:23,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:33:23,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-15 16:33:23,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2297, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 16:33:23,361 INFO L87 Difference]: Start difference. First operand 22320 states and 78332 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:33:57,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:33:57,477 INFO L93 Difference]: Finished difference Result 36818 states and 123722 transitions. [2022-03-15 16:33:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-03-15 16:33:57,477 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:33:57,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:33:57,562 INFO L225 Difference]: With dead ends: 36818 [2022-03-15 16:33:57,562 INFO L226 Difference]: Without dead ends: 36383 [2022-03-15 16:33:57,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16703 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=7341, Invalid=37815, Unknown=0, NotChecked=0, Total=45156 [2022-03-15 16:33:57,564 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1076 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 16:33:57,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1033 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 16:33:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36383 states. [2022-03-15 16:33:58,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36383 to 22991. [2022-03-15 16:33:58,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.5024358416702914) internal successors, (80521), 22990 states have internal predecessors, (80521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:33:58,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 80521 transitions. [2022-03-15 16:33:58,252 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 80521 transitions. Word has length 36 [2022-03-15 16:33:58,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:33:58,252 INFO L470 AbstractCegarLoop]: Abstraction has 22991 states and 80521 transitions. [2022-03-15 16:33:58,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:33:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 80521 transitions. [2022-03-15 16:33:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:33:58,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:33:58,296 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:33:58,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 16:33:58,512 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,SelfDestructingSolverStorable37 [2022-03-15 16:33:58,513 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:33:58,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:33:58,513 INFO L85 PathProgramCache]: Analyzing trace with hash 165942351, now seen corresponding path program 36 times [2022-03-15 16:33:58,513 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:33:58,513 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758696266] [2022-03-15 16:33:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:33:58,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:33:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:33:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:33:59,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:33:59,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758696266] [2022-03-15 16:33:59,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758696266] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:33:59,135 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861603704] [2022-03-15 16:33:59,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 16:33:59,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:33:59,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:33:59,136 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) [2022-03-15 16:33:59,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 16:33:59,204 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 16:33:59,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:33:59,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 16:33:59,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:34:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:34:01,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:34:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:34:03,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861603704] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:34:03,975 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:34:03,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 48 [2022-03-15 16:34:03,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740293253] [2022-03-15 16:34:03,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:34:03,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 16:34:03,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:34:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 16:34:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1978, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 16:34:03,976 INFO L87 Difference]: Start difference. First operand 22991 states and 80521 transitions. Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:34:19,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:34:19,777 INFO L93 Difference]: Finished difference Result 37235 states and 125952 transitions. [2022-03-15 16:34:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-03-15 16:34:19,778 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:34:19,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:34:19,944 INFO L225 Difference]: With dead ends: 37235 [2022-03-15 16:34:19,944 INFO L226 Difference]: Without dead ends: 36955 [2022-03-15 16:34:19,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10045 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=4219, Invalid=24851, Unknown=0, NotChecked=0, Total=29070 [2022-03-15 16:34:19,949 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 857 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 16:34:19,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 579 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 16:34:19,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36955 states. [2022-03-15 16:34:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36955 to 23455. [2022-03-15 16:34:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23455 states, 23454 states have (on average 3.4936471390807537) internal successors, (81940), 23454 states have internal predecessors, (81940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:34:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 81940 transitions. [2022-03-15 16:34:20,658 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 81940 transitions. Word has length 36 [2022-03-15 16:34:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:34:20,658 INFO L470 AbstractCegarLoop]: Abstraction has 23455 states and 81940 transitions. [2022-03-15 16:34:20,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:34:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 81940 transitions. [2022-03-15 16:34:20,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:34:20,702 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:34:20,702 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:34:20,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-03-15 16:34:20,915 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,SelfDestructingSolverStorable38 [2022-03-15 16:34:20,916 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:34:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:34:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1442269323, now seen corresponding path program 37 times [2022-03-15 16:34:20,916 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:34:20,916 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787924880] [2022-03-15 16:34:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:34:20,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:34:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:34:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:34:21,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:34:21,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787924880] [2022-03-15 16:34:21,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787924880] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:34:21,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753939385] [2022-03-15 16:34:21,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 16:34:21,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:34:21,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:34:21,153 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) [2022-03-15 16:34:21,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 16:34:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:34:21,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 16:34:21,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:34:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:34:21,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:34:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:34:24,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753939385] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:34:24,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:34:24,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-03-15 16:34:24,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157683647] [2022-03-15 16:34:24,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:34:24,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-15 16:34:24,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:34:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-15 16:34:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=2327, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 16:34:24,113 INFO L87 Difference]: Start difference. First operand 23455 states and 81940 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:34:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:34:54,550 INFO L93 Difference]: Finished difference Result 39539 states and 132003 transitions. [2022-03-15 16:34:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-03-15 16:34:54,550 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:34:54,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:34:54,661 INFO L225 Difference]: With dead ends: 39539 [2022-03-15 16:34:54,661 INFO L226 Difference]: Without dead ends: 39108 [2022-03-15 16:34:54,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21216 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=8717, Invalid=45805, Unknown=0, NotChecked=0, Total=54522 [2022-03-15 16:34:54,664 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1081 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 3971 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 16:34:54,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 1164 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3971 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 16:34:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39108 states. [2022-03-15 16:34:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39108 to 23865. [2022-03-15 16:34:55,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23865 states, 23864 states have (on average 3.4881830372108618) internal successors, (83242), 23864 states have internal predecessors, (83242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:34:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23865 states to 23865 states and 83242 transitions. [2022-03-15 16:34:55,374 INFO L78 Accepts]: Start accepts. Automaton has 23865 states and 83242 transitions. Word has length 36 [2022-03-15 16:34:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:34:55,374 INFO L470 AbstractCegarLoop]: Abstraction has 23865 states and 83242 transitions. [2022-03-15 16:34:55,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:34:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 23865 states and 83242 transitions. [2022-03-15 16:34:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:34:55,418 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:34:55,418 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:34:55,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-15 16:34:55,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-15 16:34:55,635 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:34:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:34:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1340971121, now seen corresponding path program 38 times [2022-03-15 16:34:55,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:34:55,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992252645] [2022-03-15 16:34:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:34:55,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:34:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:34:56,012 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:34:56,012 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:34:56,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992252645] [2022-03-15 16:34:56,012 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992252645] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:34:56,012 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574778654] [2022-03-15 16:34:56,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:34:56,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:34:56,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:34:56,013 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) [2022-03-15 16:34:56,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 16:34:56,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:34:56,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:34:56,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 16:34:56,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:34:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:34:57,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:34:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:34:58,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574778654] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:34:58,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:34:58,768 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 51 [2022-03-15 16:34:58,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35970706] [2022-03-15 16:34:58,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:34:58,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:34:58,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:34:58,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:34:58,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2191, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:34:58,769 INFO L87 Difference]: Start difference. First operand 23865 states and 83242 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:17,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:35:17,450 INFO L93 Difference]: Finished difference Result 46254 states and 153652 transitions. [2022-03-15 16:35:17,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2022-03-15 16:35:17,450 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:35:17,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:35:17,587 INFO L225 Difference]: With dead ends: 46254 [2022-03-15 16:35:17,587 INFO L226 Difference]: Without dead ends: 45963 [2022-03-15 16:35:17,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30452 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=11343, Invalid=62913, Unknown=0, NotChecked=0, Total=74256 [2022-03-15 16:35:17,591 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1310 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 16:35:17,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 792 Invalid, 5766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 16:35:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45963 states. [2022-03-15 16:35:18,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45963 to 24356. [2022-03-15 16:35:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24356 states, 24355 states have (on average 3.4868815438308354) internal successors, (84923), 24355 states have internal predecessors, (84923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24356 states to 24356 states and 84923 transitions. [2022-03-15 16:35:18,462 INFO L78 Accepts]: Start accepts. Automaton has 24356 states and 84923 transitions. Word has length 36 [2022-03-15 16:35:18,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:35:18,462 INFO L470 AbstractCegarLoop]: Abstraction has 24356 states and 84923 transitions. [2022-03-15 16:35:18,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:18,462 INFO L276 IsEmpty]: Start isEmpty. Operand 24356 states and 84923 transitions. [2022-03-15 16:35:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:35:18,506 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:35:18,506 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:35:18,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-15 16:35:18,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:35:18,722 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:35:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:35:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash -883763825, now seen corresponding path program 39 times [2022-03-15 16:35:18,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:35:18,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117707996] [2022-03-15 16:35:18,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:35:18,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:35:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:35:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:35:19,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:35:19,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117707996] [2022-03-15 16:35:19,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117707996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:35:19,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031837148] [2022-03-15 16:35:19,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:35:19,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:35:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:35:19,036 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) [2022-03-15 16:35:19,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 16:35:19,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 16:35:19,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:35:19,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 16:35:19,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:35:19,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:35:19,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:35:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:35:20,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031837148] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:35:20,830 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:35:20,830 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-15 16:35:20,830 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450080327] [2022-03-15 16:35:20,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:35:20,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:35:20,831 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:35:20,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:35:20,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2228, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:35:20,831 INFO L87 Difference]: Start difference. First operand 24356 states and 84923 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:35:35,266 INFO L93 Difference]: Finished difference Result 47727 states and 157820 transitions. [2022-03-15 16:35:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-03-15 16:35:35,266 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:35:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:35:35,377 INFO L225 Difference]: With dead ends: 47727 [2022-03-15 16:35:35,377 INFO L226 Difference]: Without dead ends: 47130 [2022-03-15 16:35:35,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22222 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=8220, Invalid=50102, Unknown=0, NotChecked=0, Total=58322 [2022-03-15 16:35:35,379 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1475 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 6996 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 7641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 6996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 16:35:35,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 893 Invalid, 7641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 6996 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 16:35:35,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47130 states. [2022-03-15 16:35:36,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47130 to 24572. [2022-03-15 16:35:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24572 states, 24571 states have (on average 3.482560742338529) internal successors, (85570), 24571 states have internal predecessors, (85570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:36,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24572 states to 24572 states and 85570 transitions. [2022-03-15 16:35:36,378 INFO L78 Accepts]: Start accepts. Automaton has 24572 states and 85570 transitions. Word has length 36 [2022-03-15 16:35:36,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:35:36,378 INFO L470 AbstractCegarLoop]: Abstraction has 24572 states and 85570 transitions. [2022-03-15 16:35:36,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:36,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24572 states and 85570 transitions. [2022-03-15 16:35:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:35:36,423 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:35:36,423 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:35:36,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-15 16:35:36,642 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,SelfDestructingSolverStorable41 [2022-03-15 16:35:36,643 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:35:36,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:35:36,643 INFO L85 PathProgramCache]: Analyzing trace with hash 231013519, now seen corresponding path program 40 times [2022-03-15 16:35:36,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:35:36,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836531204] [2022-03-15 16:35:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:35:36,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:35:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:35:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:35:37,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:35:37,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836531204] [2022-03-15 16:35:37,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836531204] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:35:37,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403609137] [2022-03-15 16:35:37,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:35:37,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:35:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:35:37,037 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) [2022-03-15 16:35:37,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 16:35:37,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:35:37,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:35:37,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 16:35:37,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:35:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:35:38,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:35:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:35:39,256 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403609137] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:35:39,256 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:35:39,256 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-03-15 16:35:39,256 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963812375] [2022-03-15 16:35:39,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:35:39,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-15 16:35:39,256 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:35:39,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-15 16:35:39,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2513, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 16:35:39,257 INFO L87 Difference]: Start difference. First operand 24572 states and 85570 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:58,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:35:58,468 INFO L93 Difference]: Finished difference Result 51559 states and 166281 transitions. [2022-03-15 16:35:58,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-03-15 16:35:58,469 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:35:58,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:35:58,629 INFO L225 Difference]: With dead ends: 51559 [2022-03-15 16:35:58,629 INFO L226 Difference]: Without dead ends: 50974 [2022-03-15 16:35:58,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36935 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=13139, Invalid=73591, Unknown=0, NotChecked=0, Total=86730 [2022-03-15 16:35:58,637 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 1672 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 4645 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 5498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 4645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-15 16:35:58,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 1087 Invalid, 5498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 4645 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-03-15 16:35:58,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50974 states. [2022-03-15 16:35:59,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50974 to 25902. [2022-03-15 16:35:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25902 states, 25901 states have (on average 3.4722983668584226) internal successors, (89936), 25901 states have internal predecessors, (89936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25902 states to 25902 states and 89936 transitions. [2022-03-15 16:35:59,833 INFO L78 Accepts]: Start accepts. Automaton has 25902 states and 89936 transitions. Word has length 36 [2022-03-15 16:35:59,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:35:59,834 INFO L470 AbstractCegarLoop]: Abstraction has 25902 states and 89936 transitions. [2022-03-15 16:35:59,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:35:59,834 INFO L276 IsEmpty]: Start isEmpty. Operand 25902 states and 89936 transitions. [2022-03-15 16:35:59,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:35:59,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:35:59,902 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:35:59,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-15 16:36:00,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-03-15 16:36:00,118 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:36:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:36:00,119 INFO L85 PathProgramCache]: Analyzing trace with hash 534588811, now seen corresponding path program 41 times [2022-03-15 16:36:00,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:36:00,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719249091] [2022-03-15 16:36:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:36:00,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:36:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:36:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:00,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:36:00,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719249091] [2022-03-15 16:36:00,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719249091] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:36:00,462 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51294063] [2022-03-15 16:36:00,462 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:36:00,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:36:00,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:36:00,463 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) [2022-03-15 16:36:00,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 16:36:00,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 16:36:00,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:36:00,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 16:36:00,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:36:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:01,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:36:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:02,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51294063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:36:02,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:36:02,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-03-15 16:36:02,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069059863] [2022-03-15 16:36:02,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:36:02,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-15 16:36:02,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:36:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-15 16:36:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2512, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 16:36:02,598 INFO L87 Difference]: Start difference. First operand 25902 states and 89936 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:36:24,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:36:24,036 INFO L93 Difference]: Finished difference Result 53208 states and 171321 transitions. [2022-03-15 16:36:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2022-03-15 16:36:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:36:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:36:24,195 INFO L225 Difference]: With dead ends: 53208 [2022-03-15 16:36:24,195 INFO L226 Difference]: Without dead ends: 52586 [2022-03-15 16:36:24,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46434 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=16388, Invalid=90868, Unknown=0, NotChecked=0, Total=107256 [2022-03-15 16:36:24,200 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1836 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 5701 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 6726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 5701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-15 16:36:24,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1836 Valid, 1118 Invalid, 6726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 5701 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-15 16:36:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52586 states. [2022-03-15 16:36:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52586 to 26033. [2022-03-15 16:36:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26033 states, 26032 states have (on average 3.4720728334357713) internal successors, (90385), 26032 states have internal predecessors, (90385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:36:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26033 states to 26033 states and 90385 transitions. [2022-03-15 16:36:25,194 INFO L78 Accepts]: Start accepts. Automaton has 26033 states and 90385 transitions. Word has length 36 [2022-03-15 16:36:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:36:25,194 INFO L470 AbstractCegarLoop]: Abstraction has 26033 states and 90385 transitions. [2022-03-15 16:36:25,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:36:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 26033 states and 90385 transitions. [2022-03-15 16:36:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:36:25,246 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:36:25,246 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:36:25,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-15 16:36:25,450 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,SelfDestructingSolverStorable43 [2022-03-15 16:36:25,450 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:36:25,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:36:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1576431985, now seen corresponding path program 42 times [2022-03-15 16:36:25,451 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:36:25,451 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676522263] [2022-03-15 16:36:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:36:25,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:36:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:36:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:25,722 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:36:25,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676522263] [2022-03-15 16:36:25,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676522263] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:36:25,722 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620872572] [2022-03-15 16:36:25,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 16:36:25,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:36:25,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:36:25,724 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) [2022-03-15 16:36:25,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 16:36:25,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-15 16:36:25,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:36:25,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 16:36:25,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:36:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:26,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:36:27,786 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:27,786 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620872572] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:36:27,786 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:36:27,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-15 16:36:27,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68003663] [2022-03-15 16:36:27,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:36:27,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:36:27,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:36:27,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:36:27,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2184, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:36:27,787 INFO L87 Difference]: Start difference. First operand 26033 states and 90385 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:36:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:36:43,726 INFO L93 Difference]: Finished difference Result 53222 states and 174091 transitions. [2022-03-15 16:36:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2022-03-15 16:36:43,726 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:36:43,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:36:43,894 INFO L225 Difference]: With dead ends: 53222 [2022-03-15 16:36:43,894 INFO L226 Difference]: Without dead ends: 52732 [2022-03-15 16:36:43,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34683 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=13109, Invalid=70701, Unknown=0, NotChecked=0, Total=83810 [2022-03-15 16:36:43,898 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 1961 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 6771 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 7704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 6771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-15 16:36:43,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1019 Invalid, 7704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 6771 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-15 16:36:43,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52732 states. [2022-03-15 16:36:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52732 to 25812. [2022-03-15 16:36:44,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25812 states, 25811 states have (on average 3.473247840068188) internal successors, (89648), 25811 states have internal predecessors, (89648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:36:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25812 states to 25812 states and 89648 transitions. [2022-03-15 16:36:44,807 INFO L78 Accepts]: Start accepts. Automaton has 25812 states and 89648 transitions. Word has length 36 [2022-03-15 16:36:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:36:44,808 INFO L470 AbstractCegarLoop]: Abstraction has 25812 states and 89648 transitions. [2022-03-15 16:36:44,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:36:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 25812 states and 89648 transitions. [2022-03-15 16:36:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:36:44,857 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:36:44,857 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:36:44,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-15 16:36:45,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:36:45,066 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:36:45,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:36:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash 24674187, now seen corresponding path program 43 times [2022-03-15 16:36:45,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:36:45,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858347679] [2022-03-15 16:36:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:36:45,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:36:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:36:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:45,544 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:36:45,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858347679] [2022-03-15 16:36:45,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858347679] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:36:45,544 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979007715] [2022-03-15 16:36:45,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 16:36:45,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:36:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:36:45,552 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) [2022-03-15 16:36:45,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 16:36:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:36:45,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 16:36:45,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:36:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:46,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:36:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:36:49,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979007715] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:36:49,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:36:49,221 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-03-15 16:36:49,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461595462] [2022-03-15 16:36:49,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:36:49,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-15 16:36:49,221 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:36:49,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-15 16:36:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2333, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 16:36:49,222 INFO L87 Difference]: Start difference. First operand 25812 states and 89648 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:37:20,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:37:20,116 INFO L93 Difference]: Finished difference Result 51318 states and 167310 transitions. [2022-03-15 16:37:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-03-15 16:37:20,117 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:37:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:37:20,276 INFO L225 Difference]: With dead ends: 51318 [2022-03-15 16:37:20,276 INFO L226 Difference]: Without dead ends: 51159 [2022-03-15 16:37:20,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25218 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=9421, Invalid=52829, Unknown=0, NotChecked=0, Total=62250 [2022-03-15 16:37:20,279 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 1121 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:37:20,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 598 Invalid, 3908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 16:37:20,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51159 states. [2022-03-15 16:37:21,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51159 to 26042. [2022-03-15 16:37:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26042 states, 26041 states have (on average 3.473368918244307) internal successors, (90450), 26041 states have internal predecessors, (90450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:37:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26042 states to 26042 states and 90450 transitions. [2022-03-15 16:37:21,230 INFO L78 Accepts]: Start accepts. Automaton has 26042 states and 90450 transitions. Word has length 36 [2022-03-15 16:37:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:37:21,230 INFO L470 AbstractCegarLoop]: Abstraction has 26042 states and 90450 transitions. [2022-03-15 16:37:21,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:37:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 26042 states and 90450 transitions. [2022-03-15 16:37:21,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:37:21,280 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:37:21,280 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:37:21,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-15 16:37:21,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:37:21,492 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:37:21,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:37:21,492 INFO L85 PathProgramCache]: Analyzing trace with hash 594461263, now seen corresponding path program 44 times [2022-03-15 16:37:21,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:37:21,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304510814] [2022-03-15 16:37:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:37:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:37:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:37:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:37:21,838 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:37:21,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304510814] [2022-03-15 16:37:21,838 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304510814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:37:21,838 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141897999] [2022-03-15 16:37:21,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:37:21,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:37:21,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:37:21,843 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) [2022-03-15 16:37:21,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 16:37:21,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:37:21,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:37:21,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 16:37:21,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:37:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:37:22,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:37:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:37:25,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141897999] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:37:25,794 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:37:25,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-03-15 16:37:25,795 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778096634] [2022-03-15 16:37:25,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:37:25,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 16:37:25,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:37:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 16:37:25,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=2044, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 16:37:25,795 INFO L87 Difference]: Start difference. First operand 26042 states and 90450 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:37:48,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:37:48,046 INFO L93 Difference]: Finished difference Result 50035 states and 165254 transitions. [2022-03-15 16:37:48,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-03-15 16:37:48,047 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:37:48,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:37:48,203 INFO L225 Difference]: With dead ends: 50035 [2022-03-15 16:37:48,204 INFO L226 Difference]: Without dead ends: 49755 [2022-03-15 16:37:48,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18619 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=6551, Invalid=42955, Unknown=0, NotChecked=0, Total=49506 [2022-03-15 16:37:48,209 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 873 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 6781 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 7261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 6781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-03-15 16:37:48,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 610 Invalid, 7261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 6781 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-03-15 16:37:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49755 states. [2022-03-15 16:37:48,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49755 to 26216. [2022-03-15 16:37:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26216 states, 26215 states have (on average 3.4712950600801067) internal successors, (91000), 26215 states have internal predecessors, (91000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:37:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26216 states to 26216 states and 91000 transitions. [2022-03-15 16:37:49,039 INFO L78 Accepts]: Start accepts. Automaton has 26216 states and 91000 transitions. Word has length 36 [2022-03-15 16:37:49,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:37:49,039 INFO L470 AbstractCegarLoop]: Abstraction has 26216 states and 91000 transitions. [2022-03-15 16:37:49,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:37:49,039 INFO L276 IsEmpty]: Start isEmpty. Operand 26216 states and 91000 transitions. [2022-03-15 16:37:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:37:49,086 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:37:49,086 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:37:49,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-15 16:37:49,295 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,SelfDestructingSolverStorable46 [2022-03-15 16:37:49,295 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:37:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:37:49,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1321167305, now seen corresponding path program 45 times [2022-03-15 16:37:49,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:37:49,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118382855] [2022-03-15 16:37:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:37:49,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:37:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:37:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:37:49,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:37:49,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118382855] [2022-03-15 16:37:49,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118382855] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:37:49,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240647726] [2022-03-15 16:37:49,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:37:49,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:37:49,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:37:49,586 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) [2022-03-15 16:37:49,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-15 16:37:49,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 16:37:49,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:37:49,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 16:37:49,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:37:50,739 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:37:50,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:37:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:37:51,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240647726] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:37:51,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:37:51,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-15 16:37:51,434 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680927069] [2022-03-15 16:37:51,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:37:51,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:37:51,434 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:37:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:37:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=2243, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:37:51,434 INFO L87 Difference]: Start difference. First operand 26216 states and 91000 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:38:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:38:03,970 INFO L93 Difference]: Finished difference Result 43564 states and 146287 transitions. [2022-03-15 16:38:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-03-15 16:38:03,970 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:38:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:38:04,075 INFO L225 Difference]: With dead ends: 43564 [2022-03-15 16:38:04,075 INFO L226 Difference]: Without dead ends: 43023 [2022-03-15 16:38:04,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16053 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=6202, Invalid=38108, Unknown=0, NotChecked=0, Total=44310 [2022-03-15 16:38:04,079 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 1126 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 5749 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 6229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 5749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-15 16:38:04,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 1024 Invalid, 6229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 5749 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-15 16:38:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43023 states. [2022-03-15 16:38:04,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43023 to 26298. [2022-03-15 16:38:04,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26298 states, 26297 states have (on average 3.473590143362361) internal successors, (91345), 26297 states have internal predecessors, (91345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:38:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26298 states to 26298 states and 91345 transitions. [2022-03-15 16:38:04,906 INFO L78 Accepts]: Start accepts. Automaton has 26298 states and 91345 transitions. Word has length 36 [2022-03-15 16:38:04,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:38:04,906 INFO L470 AbstractCegarLoop]: Abstraction has 26298 states and 91345 transitions. [2022-03-15 16:38:04,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:38:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 26298 states and 91345 transitions. [2022-03-15 16:38:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:38:04,960 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:38:04,960 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:38:04,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-03-15 16:38:05,175 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,SelfDestructingSolverStorable47 [2022-03-15 16:38:05,176 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:38:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:38:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash -365299261, now seen corresponding path program 46 times [2022-03-15 16:38:05,176 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:38:05,176 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20227210] [2022-03-15 16:38:05,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:38:05,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:38:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:38:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:38:05,598 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:38:05,598 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20227210] [2022-03-15 16:38:05,598 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20227210] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:38:05,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931540147] [2022-03-15 16:38:05,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:38:05,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:38:05,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:38:05,600 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) [2022-03-15 16:38:05,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-15 16:38:05,624 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:38:05,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:38:05,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 16:38:05,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:38:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:38:06,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:38:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:38:09,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931540147] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:38:09,550 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:38:09,551 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-15 16:38:09,551 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387738867] [2022-03-15 16:38:09,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:38:09,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:38:09,551 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:38:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:38:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=2251, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:38:09,551 INFO L87 Difference]: Start difference. First operand 26298 states and 91345 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:38:30,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:38:30,517 INFO L93 Difference]: Finished difference Result 47654 states and 155494 transitions. [2022-03-15 16:38:30,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-03-15 16:38:30,518 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:38:30,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:38:30,642 INFO L225 Difference]: With dead ends: 47654 [2022-03-15 16:38:30,643 INFO L226 Difference]: Without dead ends: 47473 [2022-03-15 16:38:30,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18883 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=6854, Invalid=41766, Unknown=0, NotChecked=0, Total=48620 [2022-03-15 16:38:30,645 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 1304 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 4831 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 5472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 4831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 16:38:30,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 768 Invalid, 5472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 4831 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 16:38:30,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47473 states. [2022-03-15 16:38:31,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47473 to 26952. [2022-03-15 16:38:31,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26952 states, 26951 states have (on average 3.465771214426181) internal successors, (93406), 26951 states have internal predecessors, (93406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:38:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26952 states to 26952 states and 93406 transitions. [2022-03-15 16:38:31,491 INFO L78 Accepts]: Start accepts. Automaton has 26952 states and 93406 transitions. Word has length 36 [2022-03-15 16:38:31,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:38:31,492 INFO L470 AbstractCegarLoop]: Abstraction has 26952 states and 93406 transitions. [2022-03-15 16:38:31,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:38:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 26952 states and 93406 transitions. [2022-03-15 16:38:31,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:38:31,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:38:31,539 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:38:31,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-03-15 16:38:31,748 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,SelfDestructingSolverStorable48 [2022-03-15 16:38:31,749 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:38:31,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:38:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1249566785, now seen corresponding path program 47 times [2022-03-15 16:38:31,749 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:38:31,749 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518058373] [2022-03-15 16:38:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:38:31,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:38:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:38:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:38:32,101 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:38:32,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518058373] [2022-03-15 16:38:32,101 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518058373] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:38:32,101 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874243366] [2022-03-15 16:38:32,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:38:32,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:38:32,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:38:32,103 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) [2022-03-15 16:38:32,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-15 16:38:32,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-15 16:38:32,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:38:32,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 16:38:32,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:38:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:38:33,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:38:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:38:36,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874243366] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:38:36,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:38:36,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 51 [2022-03-15 16:38:36,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522425739] [2022-03-15 16:38:36,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:38:36,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:38:36,306 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:38:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:38:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=2250, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:38:36,307 INFO L87 Difference]: Start difference. First operand 26952 states and 93406 transitions. Second operand has 52 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:39:18,147 INFO L93 Difference]: Finished difference Result 51716 states and 170393 transitions. [2022-03-15 16:39:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2022-03-15 16:39:18,147 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 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 36 [2022-03-15 16:39:18,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:39:18,285 INFO L225 Difference]: With dead ends: 51716 [2022-03-15 16:39:18,285 INFO L226 Difference]: Without dead ends: 51508 [2022-03-15 16:39:18,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37327 ImplicationChecksByTransitivity, 39.1s TimeCoverageRelationStatistics Valid=12294, Invalid=79212, Unknown=0, NotChecked=0, Total=91506 [2022-03-15 16:39:18,288 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 1418 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 6514 mSolverCounterSat, 630 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 7144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 630 IncrementalHoareTripleChecker+Valid, 6514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-15 16:39:18,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1418 Valid, 1173 Invalid, 7144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [630 Valid, 6514 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-03-15 16:39:18,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51508 states. [2022-03-15 16:39:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51508 to 26755. [2022-03-15 16:39:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26755 states, 26754 states have (on average 3.4713313896987366) internal successors, (92872), 26754 states have internal predecessors, (92872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26755 states to 26755 states and 92872 transitions. [2022-03-15 16:39:19,206 INFO L78 Accepts]: Start accepts. Automaton has 26755 states and 92872 transitions. Word has length 36 [2022-03-15 16:39:19,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:39:19,206 INFO L470 AbstractCegarLoop]: Abstraction has 26755 states and 92872 transitions. [2022-03-15 16:39:19,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 51 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:19,206 INFO L276 IsEmpty]: Start isEmpty. Operand 26755 states and 92872 transitions. [2022-03-15 16:39:19,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:39:19,258 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:39:19,258 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:39:19,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-03-15 16:39:19,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:39:19,474 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:39:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:39:19,474 INFO L85 PathProgramCache]: Analyzing trace with hash -201470893, now seen corresponding path program 48 times [2022-03-15 16:39:19,474 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:39:19,474 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44267793] [2022-03-15 16:39:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:39:19,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:39:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:39:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:19,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:39:19,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44267793] [2022-03-15 16:39:19,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44267793] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:39:19,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853126565] [2022-03-15 16:39:19,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 16:39:19,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:39:19,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:39:19,832 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) [2022-03-15 16:39:19,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-15 16:39:19,858 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 16:39:19,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:39:19,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:39:19,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:39:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:21,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:39:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:23,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853126565] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:39:23,260 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:39:23,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-03-15 16:39:23,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211191456] [2022-03-15 16:39:23,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:39:23,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 16:39:23,261 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:39:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 16:39:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=2067, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 16:39:23,261 INFO L87 Difference]: Start difference. First operand 26755 states and 92872 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:36,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:39:36,591 INFO L93 Difference]: Finished difference Result 44366 states and 149606 transitions. [2022-03-15 16:39:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-15 16:39:36,591 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:39:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:39:36,748 INFO L225 Difference]: With dead ends: 44366 [2022-03-15 16:39:36,749 INFO L226 Difference]: Without dead ends: 44112 [2022-03-15 16:39:36,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10303 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=4644, Invalid=25112, Unknown=0, NotChecked=0, Total=29756 [2022-03-15 16:39:36,750 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 671 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 16:39:36,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 586 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 16:39:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44112 states. [2022-03-15 16:39:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44112 to 27775. [2022-03-15 16:39:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27775 states, 27774 states have (on average 3.468351695830633) internal successors, (96330), 27774 states have internal predecessors, (96330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27775 states to 27775 states and 96330 transitions. [2022-03-15 16:39:37,794 INFO L78 Accepts]: Start accepts. Automaton has 27775 states and 96330 transitions. Word has length 36 [2022-03-15 16:39:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:39:37,799 INFO L470 AbstractCegarLoop]: Abstraction has 27775 states and 96330 transitions. [2022-03-15 16:39:37,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 27775 states and 96330 transitions. [2022-03-15 16:39:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:39:37,858 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:39:37,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:39:37,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-03-15 16:39:38,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:39:38,060 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:39:38,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:39:38,061 INFO L85 PathProgramCache]: Analyzing trace with hash 784701651, now seen corresponding path program 49 times [2022-03-15 16:39:38,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:39:38,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164132734] [2022-03-15 16:39:38,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:39:38,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:39:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:39:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:38,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:39:38,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164132734] [2022-03-15 16:39:38,373 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164132734] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:39:38,373 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104073869] [2022-03-15 16:39:38,373 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 16:39:38,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:39:38,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:39:38,374 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) [2022-03-15 16:39:38,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-15 16:39:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:39:38,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 16:39:38,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:39:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:39,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:39:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:44,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104073869] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:39:44,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:39:44,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-03-15 16:39:44,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268516406] [2022-03-15 16:39:44,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:39:44,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 16:39:44,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:39:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 16:39:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 16:39:44,176 INFO L87 Difference]: Start difference. First operand 27775 states and 96330 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:52,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:39:52,588 INFO L93 Difference]: Finished difference Result 39833 states and 133433 transitions. [2022-03-15 16:39:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-03-15 16:39:52,589 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:39:52,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:39:52,696 INFO L225 Difference]: With dead ends: 39833 [2022-03-15 16:39:52,696 INFO L226 Difference]: Without dead ends: 39522 [2022-03-15 16:39:52,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4201 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2258, Invalid=11082, Unknown=0, NotChecked=0, Total=13340 [2022-03-15 16:39:52,697 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 550 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 16:39:52,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 385 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 16:39:52,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39522 states. [2022-03-15 16:39:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39522 to 27912. [2022-03-15 16:39:53,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27912 states, 27911 states have (on average 3.4675934219483358) internal successors, (96784), 27911 states have internal predecessors, (96784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27912 states to 27912 states and 96784 transitions. [2022-03-15 16:39:53,508 INFO L78 Accepts]: Start accepts. Automaton has 27912 states and 96784 transitions. Word has length 36 [2022-03-15 16:39:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:39:53,508 INFO L470 AbstractCegarLoop]: Abstraction has 27912 states and 96784 transitions. [2022-03-15 16:39:53,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:39:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 27912 states and 96784 transitions. [2022-03-15 16:39:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:39:53,566 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:39:53,566 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:39:53,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-03-15 16:39:53,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:39:53,781 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:39:53,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:39:53,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1177801161, now seen corresponding path program 50 times [2022-03-15 16:39:53,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:39:53,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705495752] [2022-03-15 16:39:53,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:39:53,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:39:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:39:54,287 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:54,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:39:54,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705495752] [2022-03-15 16:39:54,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705495752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:39:54,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197364511] [2022-03-15 16:39:54,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 16:39:54,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:39:54,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:39:54,289 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) [2022-03-15 16:39:54,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-15 16:39:54,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 16:39:54,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:39:54,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:39:54,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:39:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:55,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:39:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:39:57,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197364511] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:39:57,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:39:57,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-03-15 16:39:57,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570444965] [2022-03-15 16:39:57,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:39:57,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-15 16:39:57,546 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:39:57,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-15 16:39:57,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 16:39:57,547 INFO L87 Difference]: Start difference. First operand 27912 states and 96784 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:40:11,899 INFO L93 Difference]: Finished difference Result 44091 states and 148205 transitions. [2022-03-15 16:40:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-03-15 16:40:11,899 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:40:11,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:40:12,022 INFO L225 Difference]: With dead ends: 44091 [2022-03-15 16:40:12,022 INFO L226 Difference]: Without dead ends: 43727 [2022-03-15 16:40:12,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14311 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=6305, Invalid=31525, Unknown=0, NotChecked=0, Total=37830 [2022-03-15 16:40:12,024 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 903 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 3328 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 3328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 16:40:12,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [903 Valid, 640 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 3328 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 16:40:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43727 states. [2022-03-15 16:40:12,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43727 to 28010. [2022-03-15 16:40:12,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28010 states, 28009 states have (on average 3.4664929129922526) internal successors, (97093), 28009 states have internal predecessors, (97093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28010 states to 28010 states and 97093 transitions. [2022-03-15 16:40:12,856 INFO L78 Accepts]: Start accepts. Automaton has 28010 states and 97093 transitions. Word has length 36 [2022-03-15 16:40:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:40:12,857 INFO L470 AbstractCegarLoop]: Abstraction has 28010 states and 97093 transitions. [2022-03-15 16:40:12,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 28010 states and 97093 transitions. [2022-03-15 16:40:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:40:13,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:40:13,084 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:40:13,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-03-15 16:40:13,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-03-15 16:40:13,299 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:40:13,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:40:13,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1297956219, now seen corresponding path program 51 times [2022-03-15 16:40:13,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:40:13,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767317940] [2022-03-15 16:40:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:40:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:40:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:40:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:13,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:40:13,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767317940] [2022-03-15 16:40:13,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767317940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:40:13,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278227676] [2022-03-15 16:40:13,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 16:40:13,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:40:13,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:40:13,884 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) [2022-03-15 16:40:13,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-15 16:40:13,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 16:40:13,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:40:13,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 16:40:13,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:40:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:15,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:40:19,154 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:19,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278227676] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:40:19,154 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:40:19,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 47 [2022-03-15 16:40:19,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509230615] [2022-03-15 16:40:19,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:40:19,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 16:40:19,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:40:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 16:40:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=1851, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 16:40:19,156 INFO L87 Difference]: Start difference. First operand 28010 states and 97093 transitions. Second operand has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:40:28,190 INFO L93 Difference]: Finished difference Result 42060 states and 142751 transitions. [2022-03-15 16:40:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-03-15 16:40:28,191 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:40:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:40:28,335 INFO L225 Difference]: With dead ends: 42060 [2022-03-15 16:40:28,335 INFO L226 Difference]: Without dead ends: 41766 [2022-03-15 16:40:28,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3786 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2133, Invalid=9857, Unknown=0, NotChecked=0, Total=11990 [2022-03-15 16:40:28,336 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 789 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 2539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-15 16:40:28,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 264 Invalid, 2539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-03-15 16:40:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41766 states. [2022-03-15 16:40:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41766 to 28161. [2022-03-15 16:40:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28161 states, 28160 states have (on average 3.464950284090909) internal successors, (97573), 28160 states have internal predecessors, (97573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28161 states to 28161 states and 97573 transitions. [2022-03-15 16:40:29,235 INFO L78 Accepts]: Start accepts. Automaton has 28161 states and 97573 transitions. Word has length 36 [2022-03-15 16:40:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:40:29,235 INFO L470 AbstractCegarLoop]: Abstraction has 28161 states and 97573 transitions. [2022-03-15 16:40:29,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.0208333333333335) internal successors, (97), 47 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:29,235 INFO L276 IsEmpty]: Start isEmpty. Operand 28161 states and 97573 transitions. [2022-03-15 16:40:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:40:29,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:40:29,290 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:40:29,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-15 16:40:29,499 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,SelfDestructingSolverStorable53 [2022-03-15 16:40:29,499 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:40:29,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:40:29,499 INFO L85 PathProgramCache]: Analyzing trace with hash -571543025, now seen corresponding path program 52 times [2022-03-15 16:40:29,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:40:29,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755528642] [2022-03-15 16:40:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:40:29,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:40:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:40:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:29,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:40:29,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755528642] [2022-03-15 16:40:29,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755528642] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:40:29,846 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999123408] [2022-03-15 16:40:29,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 16:40:29,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:40:29,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:40:29,847 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) [2022-03-15 16:40:29,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-15 16:40:29,870 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 16:40:29,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:40:29,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:40:29,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:40:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:30,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:40:33,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:33,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999123408] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:40:33,595 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:40:33,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-03-15 16:40:33,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122362154] [2022-03-15 16:40:33,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:40:33,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-03-15 16:40:33,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:40:33,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-03-15 16:40:33,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2343, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 16:40:33,596 INFO L87 Difference]: Start difference. First operand 28161 states and 97573 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:40:50,719 INFO L93 Difference]: Finished difference Result 44091 states and 147178 transitions. [2022-03-15 16:40:50,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-15 16:40:50,719 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:40:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 16:40:50,828 INFO L225 Difference]: With dead ends: 44091 [2022-03-15 16:40:50,828 INFO L226 Difference]: Without dead ends: 43932 [2022-03-15 16:40:50,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11747 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=5209, Invalid=27011, Unknown=0, NotChecked=0, Total=32220 [2022-03-15 16:40:50,829 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 865 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 3013 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 3503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 3013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-15 16:40:50,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 588 Invalid, 3503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 3013 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-15 16:40:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43932 states. [2022-03-15 16:40:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43932 to 28992. [2022-03-15 16:40:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28992 states, 28991 states have (on average 3.4538649925839056) internal successors, (100131), 28991 states have internal predecessors, (100131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28992 states to 28992 states and 100131 transitions. [2022-03-15 16:40:51,599 INFO L78 Accepts]: Start accepts. Automaton has 28992 states and 100131 transitions. Word has length 36 [2022-03-15 16:40:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 16:40:51,599 INFO L470 AbstractCegarLoop]: Abstraction has 28992 states and 100131 transitions. [2022-03-15 16:40:51,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:40:51,599 INFO L276 IsEmpty]: Start isEmpty. Operand 28992 states and 100131 transitions. [2022-03-15 16:40:51,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 16:40:51,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 16:40:51,649 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 16:40:51,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-03-15 16:40:51,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:40:51,857 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 16:40:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 16:40:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1409470193, now seen corresponding path program 53 times [2022-03-15 16:40:51,858 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 16:40:51,858 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718826377] [2022-03-15 16:40:51,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 16:40:51,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 16:40:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 16:40:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:52,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 16:40:52,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718826377] [2022-03-15 16:40:52,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718826377] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 16:40:52,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581304047] [2022-03-15 16:40:52,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 16:40:52,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 16:40:52,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 16:40:52,120 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) [2022-03-15 16:40:52,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-15 16:40:52,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 16:40:52,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 16:40:52,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 16:40:52,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 16:40:53,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:53,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 16:40:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 16:40:54,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581304047] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 16:40:54,932 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 16:40:54,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-03-15 16:40:54,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132575345] [2022-03-15 16:40:54,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-15 16:40:54,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-15 16:40:54,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 16:40:54,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-15 16:40:54,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=2272, Unknown=0, NotChecked=0, Total=2652 [2022-03-15 16:40:54,933 INFO L87 Difference]: Start difference. First operand 28992 states and 100131 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 16:41:20,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 16:41:20,292 INFO L93 Difference]: Finished difference Result 42428 states and 141234 transitions. [2022-03-15 16:41:20,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-03-15 16:41:20,292 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-03-15 16:41:20,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2022-03-15 16:41:20,339 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 [2022-03-15 16:41:20,339 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 16:41:20,419 INFO L225 Difference]: With dead ends: 42428 [2022-03-15 16:41:20,419 INFO L226 Difference]: Without dead ends: 41995 [2022-03-15 16:41:20,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26449 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=10402, Invalid=57458, Unknown=0, NotChecked=0, Total=67860 [2022-03-15 16:41:20,423 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1477 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 3961 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 4606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 3961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 16:41:20,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1477 Valid, 972 Invalid, 4606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 3961 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 16:41:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41995 states. [2022-03-15 16:41:20,465 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-03-15 16:41:20,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-15 16:41:20,668 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,SelfDestructingSolverStorable55 [2022-03-15 16:41:20,668 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-03-15 16:41:20,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 16:41:20,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 16:41:20,670 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 16:41:20,672 INFO L732 BasicCegarLoop]: Path program histogram: [53, 1, 1, 1] [2022-03-15 16:41:20,674 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 16:41:20,674 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 16:41:20,675 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 04:41:20 BasicIcfg [2022-03-15 16:41:20,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 16:41:20,675 INFO L158 Benchmark]: Toolchain (without parser) took 874582.86ms. Allocated memory was 243.3MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 204.5MB in the beginning and 646.5MB in the end (delta: -442.0MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-03-15 16:41:20,675 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 243.3MB. Free memory is still 205.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 16:41:20,676 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.28ms. Allocated memory is still 243.3MB. Free memory was 204.4MB in the beginning and 202.9MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 16:41:20,676 INFO L158 Benchmark]: Boogie Preprocessor took 17.08ms. Allocated memory is still 243.3MB. Free memory was 202.9MB in the beginning and 201.9MB in the end (delta: 970.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 16:41:20,676 INFO L158 Benchmark]: RCFGBuilder took 259.87ms. Allocated memory is still 243.3MB. Free memory was 201.8MB in the beginning and 191.9MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-15 16:41:20,676 INFO L158 Benchmark]: TraceAbstraction took 874281.97ms. Allocated memory was 243.3MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 191.3MB in the beginning and 646.5MB in the end (delta: -455.1MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-03-15 16:41:20,679 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 0.10ms. Allocated memory is still 243.3MB. Free memory is still 205.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.28ms. Allocated memory is still 243.3MB. Free memory was 204.4MB in the beginning and 202.9MB in the end (delta: 1.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.08ms. Allocated memory is still 243.3MB. Free memory was 202.9MB in the beginning and 201.9MB in the end (delta: 970.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 259.87ms. Allocated memory is still 243.3MB. Free memory was 201.8MB in the beginning and 191.9MB in the end (delta: 9.9MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 874281.97ms. Allocated memory was 243.3MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 191.3MB in the beginning and 646.5MB in the end (delta: -455.1MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * 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: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 71]: 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: 72]: 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: 71]: 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, 47 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 874.1s, OverallIterations: 56, TraceHistogramMax: 4, PathProgramHistogramMax: 53, EmptinessCheckTime: 1.6s, AutomataDifference: 674.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45119 SdHoareTripleChecker+Valid, 89.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45119 mSDsluCounter, 29909 SdHoareTripleChecker+Invalid, 78.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39646 mSDsCounter, 22978 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 183795 IncrementalHoareTripleChecker+Invalid, 206773 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22978 mSolverCounterUnsat, 1392 mSDtfsCounter, 183795 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10911 GetRequests, 2023 SyntacticMatches, 125 SemanticMatches, 8763 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680544 ImplicationChecksByTransitivity, 618.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28992occurred in iteration=55, InterpolantAutomatonStates: 7904, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 24.1s AutomataMinimizationTime, 56 MinimizatonAttempts, 591402 StatesRemovedByMinimization, 53 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 159.9s InterpolantComputationTime, 3683 NumberOfCodeBlocks, 3683 NumberOfCodeBlocksAsserted, 213 NumberOfCheckSat, 5315 ConstructedInterpolants, 0 QuantifiedInterpolants, 205871 SizeOfPredicates, 635 NumberOfNonLiveVariables, 3300 ConjunctsInSsa, 1040 ConjunctsInUnsatCore, 160 InterpolantComputations, 4 PerfectInterpolantSequences, 96/2508 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