/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3-extended.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 05:24:49,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 05:24:49,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 05:24:50,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 05:24:50,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 05:24:50,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 05:24:50,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 05:24:50,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 05:24:50,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 05:24:50,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 05:24:50,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 05:24:50,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 05:24:50,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 05:24:50,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 05:24:50,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 05:24:50,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 05:24:50,099 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 05:24:50,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 05:24:50,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 05:24:50,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 05:24:50,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 05:24:50,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 05:24:50,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 05:24:50,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 05:24:50,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 05:24:50,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 05:24:50,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 05:24:50,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 05:24:50,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 05:24:50,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 05:24:50,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 05:24:50,102 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 05:24:50,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 05:24:50,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 05:24:50,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 05:24:50,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 05:24:50,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 05:24:50,294 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 05:24:50,298 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 05:24:50,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3-extended.wvr.bpl [2022-01-18 05:24:50,299 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-3-extended.wvr.bpl' [2022-01-18 05:24:50,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 05:24:50,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 05:24:50,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 05:24:50,319 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 05:24:50,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 05:24:50,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,338 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 05:24:50,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 05:24:50,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 05:24:50,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 05:24:50,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 05:24:50,347 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 05:24:50,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 05:24:50,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 05:24:50,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 05:24:50,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/1) ... [2022-01-18 05:24:50,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 05:24:50,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:50,374 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 05:24:50,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 05:24:50,399 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 05:24:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 05:24:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 05:24:50,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 05:24:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 05:24:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 05:24:50,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 05:24:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 05:24:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 05:24:50,400 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 05:24:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 05:24:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 05:24:50,401 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 05:24:50,435 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 05:24:50,436 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 05:24:50,506 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 05:24:50,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 05:24:50,511 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 05:24:50,512 INFO L202 PluginConnector]: Adding new model misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:24:50 BoogieIcfgContainer [2022-01-18 05:24:50,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 05:24:50,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 05:24:50,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 05:24:50,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 05:24:50,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 05:24:50" (1/2) ... [2022-01-18 05:24:50,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219bff3 and model type misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 05:24:50, skipping insertion in model container [2022-01-18 05:24:50,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 05:24:50" (2/2) ... [2022-01-18 05:24:50,517 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-3-extended.wvr.bpl [2022-01-18 05:24:50,520 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 05:24:50,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 05:24:50,520 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 05:24:50,520 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 05:24:50,546 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 05:24:50,577 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 05:24:50,581 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 05:24:50,582 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 05:24:50,595 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 50 transitions, 124 flow [2022-01-18 05:24:50,719 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 914 states, 913 states have (on average 3.895947426067908) internal successors, (3557), 913 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 914 states, 913 states have (on average 3.895947426067908) internal successors, (3557), 913 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 05:24:50,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:50,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:50,739 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:50,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1843262726, now seen corresponding path program 1 times [2022-01-18 05:24:50,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:50,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17884020] [2022-01-18 05:24:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:50,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:50,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:50,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17884020] [2022-01-18 05:24:50,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17884020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:50,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:50,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 05:24:50,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564784523] [2022-01-18 05:24:50,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:50,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 05:24:50,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:50,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 05:24:50,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:50,851 INFO L87 Difference]: Start difference. First operand has 914 states, 913 states have (on average 3.895947426067908) internal successors, (3557), 913 states have internal predecessors, (3557), 0 states have call successors, (0), 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 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:50,901 INFO L93 Difference]: Finished difference Result 1005 states and 3886 transitions. [2022-01-18 05:24:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 05:24:50,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 05:24:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:50,923 INFO L225 Difference]: With dead ends: 1005 [2022-01-18 05:24:50,923 INFO L226 Difference]: Without dead ends: 1005 [2022-01-18 05:24:50,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:50,926 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:50,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 65 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-01-18 05:24:51,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1005. [2022-01-18 05:24:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1005 states, 1004 states have (on average 3.8705179282868527) internal successors, (3886), 1004 states have internal predecessors, (3886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1005 states to 1005 states and 3886 transitions. [2022-01-18 05:24:51,059 INFO L78 Accepts]: Start accepts. Automaton has 1005 states and 3886 transitions. Word has length 15 [2022-01-18 05:24:51,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:51,060 INFO L470 AbstractCegarLoop]: Abstraction has 1005 states and 3886 transitions. [2022-01-18 05:24:51,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1005 states and 3886 transitions. [2022-01-18 05:24:51,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 05:24:51,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:51,066 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] [2022-01-18 05:24:51,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 05:24:51,067 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:51,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash -73020641, now seen corresponding path program 1 times [2022-01-18 05:24:51,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:51,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467368919] [2022-01-18 05:24:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:51,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:51,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:51,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467368919] [2022-01-18 05:24:51,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467368919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:51,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:51,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 05:24:51,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132209369] [2022-01-18 05:24:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:51,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 05:24:51,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 05:24:51,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:51,106 INFO L87 Difference]: Start difference. First operand 1005 states and 3886 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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) [2022-01-18 05:24:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:51,128 INFO L93 Difference]: Finished difference Result 1114 states and 4276 transitions. [2022-01-18 05:24:51,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 05:24:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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 [2022-01-18 05:24:51,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:51,134 INFO L225 Difference]: With dead ends: 1114 [2022-01-18 05:24:51,135 INFO L226 Difference]: Without dead ends: 1114 [2022-01-18 05:24:51,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:51,143 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:51,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 65 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:51,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2022-01-18 05:24:51,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1114. [2022-01-18 05:24:51,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 1113 states have (on average 3.8418688230008984) internal successors, (4276), 1113 states have internal predecessors, (4276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 4276 transitions. [2022-01-18 05:24:51,186 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 4276 transitions. Word has length 21 [2022-01-18 05:24:51,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:51,187 INFO L470 AbstractCegarLoop]: Abstraction has 1114 states and 4276 transitions. [2022-01-18 05:24:51,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 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) [2022-01-18 05:24:51,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 4276 transitions. [2022-01-18 05:24:51,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 05:24:51,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:51,191 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] [2022-01-18 05:24:51,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 05:24:51,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:51,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:51,194 INFO L85 PathProgramCache]: Analyzing trace with hash -515372890, now seen corresponding path program 1 times [2022-01-18 05:24:51,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:51,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081987501] [2022-01-18 05:24:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:51,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 05:24:51,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:51,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081987501] [2022-01-18 05:24:51,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081987501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:51,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:51,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 05:24:51,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859218398] [2022-01-18 05:24:51,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:51,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:24:51,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:24:51,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:51,230 INFO L87 Difference]: Start difference. First operand 1114 states and 4276 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:51,265 INFO L93 Difference]: Finished difference Result 1550 states and 5618 transitions. [2022-01-18 05:24:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:24:51,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 05:24:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:51,273 INFO L225 Difference]: With dead ends: 1550 [2022-01-18 05:24:51,273 INFO L226 Difference]: Without dead ends: 1550 [2022-01-18 05:24:51,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:51,274 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 61 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:51,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 117 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:51,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2022-01-18 05:24:51,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1550. [2022-01-18 05:24:51,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1549 states have (on average 3.6268560361523563) internal successors, (5618), 1549 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 5618 transitions. [2022-01-18 05:24:51,312 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 5618 transitions. Word has length 27 [2022-01-18 05:24:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:51,313 INFO L470 AbstractCegarLoop]: Abstraction has 1550 states and 5618 transitions. [2022-01-18 05:24:51,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 5618 transitions. [2022-01-18 05:24:51,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 05:24:51,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:51,318 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, 1, 1] [2022-01-18 05:24:51,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 05:24:51,318 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:51,320 INFO L85 PathProgramCache]: Analyzing trace with hash -671432070, now seen corresponding path program 1 times [2022-01-18 05:24:51,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:51,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542584944] [2022-01-18 05:24:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:51,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 05:24:51,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:51,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542584944] [2022-01-18 05:24:51,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542584944] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:51,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:51,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 05:24:51,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713845970] [2022-01-18 05:24:51,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:51,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:24:51,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:51,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:24:51,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:51,355 INFO L87 Difference]: Start difference. First operand 1550 states and 5618 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:51,388 INFO L93 Difference]: Finished difference Result 2114 states and 7232 transitions. [2022-01-18 05:24:51,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:24:51,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2022-01-18 05:24:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:51,398 INFO L225 Difference]: With dead ends: 2114 [2022-01-18 05:24:51,398 INFO L226 Difference]: Without dead ends: 2114 [2022-01-18 05:24:51,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:51,399 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 54 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:51,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 117 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:51,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2022-01-18 05:24:51,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 2114. [2022-01-18 05:24:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 2113 states have (on average 3.4226218646474207) internal successors, (7232), 2113 states have internal predecessors, (7232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 7232 transitions. [2022-01-18 05:24:51,444 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 7232 transitions. Word has length 32 [2022-01-18 05:24:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:51,446 INFO L470 AbstractCegarLoop]: Abstraction has 2114 states and 7232 transitions. [2022-01-18 05:24:51,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 7232 transitions. [2022-01-18 05:24:51,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-18 05:24:51,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:51,452 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, 1, 1, 1, 1, 1] [2022-01-18 05:24:51,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 05:24:51,453 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:51,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:51,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1025394290, now seen corresponding path program 1 times [2022-01-18 05:24:51,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:51,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156774295] [2022-01-18 05:24:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:51,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 05:24:51,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:51,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156774295] [2022-01-18 05:24:51,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156774295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:51,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:51,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 05:24:51,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659442167] [2022-01-18 05:24:51,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:51,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 05:24:51,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:51,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 05:24:51,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:51,486 INFO L87 Difference]: Start difference. First operand 2114 states and 7232 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:51,520 INFO L93 Difference]: Finished difference Result 2325 states and 7893 transitions. [2022-01-18 05:24:51,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 05:24:51,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-18 05:24:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:51,530 INFO L225 Difference]: With dead ends: 2325 [2022-01-18 05:24:51,531 INFO L226 Difference]: Without dead ends: 2325 [2022-01-18 05:24:51,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:51,535 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:51,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 65 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:51,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2022-01-18 05:24:51,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 2325. [2022-01-18 05:24:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 2324 states have (on average 3.3962994836488813) internal successors, (7893), 2324 states have internal predecessors, (7893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 7893 transitions. [2022-01-18 05:24:51,591 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 7893 transitions. Word has length 37 [2022-01-18 05:24:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:51,592 INFO L470 AbstractCegarLoop]: Abstraction has 2325 states and 7893 transitions. [2022-01-18 05:24:51,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 7893 transitions. [2022-01-18 05:24:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 05:24:51,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:51,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:51,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 05:24:51,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:51,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:51,600 INFO L85 PathProgramCache]: Analyzing trace with hash -420829049, now seen corresponding path program 1 times [2022-01-18 05:24:51,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:51,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831007091] [2022-01-18 05:24:51,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:51,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 05:24:51,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:51,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831007091] [2022-01-18 05:24:51,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831007091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:51,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:51,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 05:24:51,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901580250] [2022-01-18 05:24:51,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:51,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 05:24:51,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:51,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 05:24:51,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:51,632 INFO L87 Difference]: Start difference. First operand 2325 states and 7893 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:51,662 INFO L93 Difference]: Finished difference Result 2958 states and 9876 transitions. [2022-01-18 05:24:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 05:24:51,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-18 05:24:51,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:51,675 INFO L225 Difference]: With dead ends: 2958 [2022-01-18 05:24:51,675 INFO L226 Difference]: Without dead ends: 2958 [2022-01-18 05:24:51,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 05:24:51,677 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 13 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:51,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 63 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2022-01-18 05:24:51,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2747. [2022-01-18 05:24:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2747 states, 2746 states have (on average 3.3557902403495996) internal successors, (9215), 2746 states have internal predecessors, (9215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 9215 transitions. [2022-01-18 05:24:51,748 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 9215 transitions. Word has length 43 [2022-01-18 05:24:51,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:51,749 INFO L470 AbstractCegarLoop]: Abstraction has 2747 states and 9215 transitions. [2022-01-18 05:24:51,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 9215 transitions. [2022-01-18 05:24:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-18 05:24:51,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:51,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:51,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 05:24:51,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1165385929, now seen corresponding path program 1 times [2022-01-18 05:24:51,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:51,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290114633] [2022-01-18 05:24:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:51,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 05:24:51,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:51,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290114633] [2022-01-18 05:24:51,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290114633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 05:24:51,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 05:24:51,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 05:24:51,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726920876] [2022-01-18 05:24:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 05:24:51,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 05:24:51,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:51,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 05:24:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:51,807 INFO L87 Difference]: Start difference. First operand 2747 states and 9215 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:51,841 INFO L93 Difference]: Finished difference Result 3169 states and 10115 transitions. [2022-01-18 05:24:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 05:24:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-01-18 05:24:51,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:51,868 INFO L225 Difference]: With dead ends: 3169 [2022-01-18 05:24:51,868 INFO L226 Difference]: Without dead ends: 3169 [2022-01-18 05:24:51,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 05:24:51,869 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 40 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:51,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2022-01-18 05:24:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 3169. [2022-01-18 05:24:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3168 states have (on average 3.1928661616161618) internal successors, (10115), 3168 states have internal predecessors, (10115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 10115 transitions. [2022-01-18 05:24:51,959 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 10115 transitions. Word has length 43 [2022-01-18 05:24:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:51,960 INFO L470 AbstractCegarLoop]: Abstraction has 3169 states and 10115 transitions. [2022-01-18 05:24:51,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 10115 transitions. [2022-01-18 05:24:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:51,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:51,967 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:51,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 05:24:51,967 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2097686929, now seen corresponding path program 1 times [2022-01-18 05:24:51,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823386519] [2022-01-18 05:24:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:51,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:52,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:52,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823386519] [2022-01-18 05:24:52,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823386519] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:52,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085900013] [2022-01-18 05:24:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:52,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:52,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:52,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:52,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 05:24:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:52,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:52,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:52,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:52,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085900013] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:52,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:52,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-01-18 05:24:52,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101548797] [2022-01-18 05:24:52,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:52,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 05:24:52,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 05:24:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:52,577 INFO L87 Difference]: Start difference. First operand 3169 states and 10115 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:52,637 INFO L93 Difference]: Finished difference Result 5225 states and 16762 transitions. [2022-01-18 05:24:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 05:24:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:52,652 INFO L225 Difference]: With dead ends: 5225 [2022-01-18 05:24:52,653 INFO L226 Difference]: Without dead ends: 5074 [2022-01-18 05:24:52,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 05:24:52,653 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 46 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:52,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 276 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:52,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2022-01-18 05:24:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 4826. [2022-01-18 05:24:52,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 3.2426943005181346) internal successors, (15646), 4825 states have internal predecessors, (15646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 15646 transitions. [2022-01-18 05:24:52,749 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 15646 transitions. Word has length 48 [2022-01-18 05:24:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:52,749 INFO L470 AbstractCegarLoop]: Abstraction has 4826 states and 15646 transitions. [2022-01-18 05:24:52,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 15646 transitions. [2022-01-18 05:24:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:52,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:52,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:52,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 05:24:52,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:52,975 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash 489539951, now seen corresponding path program 2 times [2022-01-18 05:24:52,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:52,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070248263] [2022-01-18 05:24:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:52,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:53,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:53,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070248263] [2022-01-18 05:24:53,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070248263] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:53,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343643372] [2022-01-18 05:24:53,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:24:53,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:53,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:53,075 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:53,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 05:24:53,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:24:53,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:53,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:53,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:53,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:53,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343643372] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:53,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:53,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-18 05:24:53,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875639437] [2022-01-18 05:24:53,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:53,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:24:53,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:53,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:24:53,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:53,406 INFO L87 Difference]: Start difference. First operand 4826 states and 15646 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:53,484 INFO L93 Difference]: Finished difference Result 6962 states and 22532 transitions. [2022-01-18 05:24:53,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:24:53,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:53,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:53,500 INFO L225 Difference]: With dead ends: 6962 [2022-01-18 05:24:53,500 INFO L226 Difference]: Without dead ends: 6313 [2022-01-18 05:24:53,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:53,501 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 62 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:53,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 415 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2022-01-18 05:24:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 4631. [2022-01-18 05:24:53,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4631 states, 4630 states have (on average 3.2323974082073432) internal successors, (14966), 4630 states have internal predecessors, (14966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4631 states to 4631 states and 14966 transitions. [2022-01-18 05:24:53,613 INFO L78 Accepts]: Start accepts. Automaton has 4631 states and 14966 transitions. Word has length 48 [2022-01-18 05:24:53,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:53,614 INFO L470 AbstractCegarLoop]: Abstraction has 4631 states and 14966 transitions. [2022-01-18 05:24:53,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4631 states and 14966 transitions. [2022-01-18 05:24:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:53,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:53,622 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:53,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:53,835 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,SelfDestructingSolverStorable8 [2022-01-18 05:24:53,835 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:53,836 INFO L85 PathProgramCache]: Analyzing trace with hash -769618321, now seen corresponding path program 3 times [2022-01-18 05:24:53,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:53,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085551933] [2022-01-18 05:24:53,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:53,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:53,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:53,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085551933] [2022-01-18 05:24:53,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085551933] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:53,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619383407] [2022-01-18 05:24:53,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:24:53,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:53,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:53,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:53,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 05:24:53,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 05:24:53,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:53,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:53,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:54,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 05:24:54,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619383407] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:54,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:54,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-18 05:24:54,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421967098] [2022-01-18 05:24:54,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:54,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 05:24:54,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 05:24:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:54,187 INFO L87 Difference]: Start difference. First operand 4631 states and 14966 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:54,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:54,259 INFO L93 Difference]: Finished difference Result 8195 states and 26626 transitions. [2022-01-18 05:24:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 05:24:54,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:54,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:54,278 INFO L225 Difference]: With dead ends: 8195 [2022-01-18 05:24:54,278 INFO L226 Difference]: Without dead ends: 7472 [2022-01-18 05:24:54,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-18 05:24:54,280 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 68 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:54,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 391 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 05:24:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2022-01-18 05:24:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 6998. [2022-01-18 05:24:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6998 states, 6997 states have (on average 3.2722595398027727) internal successors, (22896), 6997 states have internal predecessors, (22896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:54,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6998 states to 6998 states and 22896 transitions. [2022-01-18 05:24:54,419 INFO L78 Accepts]: Start accepts. Automaton has 6998 states and 22896 transitions. Word has length 48 [2022-01-18 05:24:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:54,420 INFO L470 AbstractCegarLoop]: Abstraction has 6998 states and 22896 transitions. [2022-01-18 05:24:54,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:54,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6998 states and 22896 transitions. [2022-01-18 05:24:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:54,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:54,433 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:54,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:54,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:54,647 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:54,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:54,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1528070041, now seen corresponding path program 4 times [2022-01-18 05:24:54,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:54,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545218709] [2022-01-18 05:24:54,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:54,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:54,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:54,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545218709] [2022-01-18 05:24:54,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545218709] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:54,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821515783] [2022-01-18 05:24:54,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:24:54,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:54,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:54,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:54,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 05:24:54,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:24:54,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:54,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:54,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:54,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:24:55,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821515783] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:55,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:55,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-01-18 05:24:55,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215355905] [2022-01-18 05:24:55,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:55,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:24:55,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:24:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:24:55,012 INFO L87 Difference]: Start difference. First operand 6998 states and 22896 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:55,111 INFO L93 Difference]: Finished difference Result 9603 states and 31287 transitions. [2022-01-18 05:24:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:24:55,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:55,131 INFO L225 Difference]: With dead ends: 9603 [2022-01-18 05:24:55,131 INFO L226 Difference]: Without dead ends: 8352 [2022-01-18 05:24:55,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:24:55,132 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 86 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:55,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 576 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:55,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2022-01-18 05:24:55,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 6644. [2022-01-18 05:24:55,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6644 states, 6643 states have (on average 3.2599729038085203) internal successors, (21656), 6643 states have internal predecessors, (21656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6644 states to 6644 states and 21656 transitions. [2022-01-18 05:24:55,255 INFO L78 Accepts]: Start accepts. Automaton has 6644 states and 21656 transitions. Word has length 48 [2022-01-18 05:24:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:55,255 INFO L470 AbstractCegarLoop]: Abstraction has 6644 states and 21656 transitions. [2022-01-18 05:24:55,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6644 states and 21656 transitions. [2022-01-18 05:24:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:55,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:55,267 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:55,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:55,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:55,483 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:55,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1777483479, now seen corresponding path program 5 times [2022-01-18 05:24:55,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:55,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148817590] [2022-01-18 05:24:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:55,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 05:24:55,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:55,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148817590] [2022-01-18 05:24:55,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148817590] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:55,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226172500] [2022-01-18 05:24:55,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:24:55,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:55,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:55,533 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:55,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 05:24:55,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 05:24:55,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:55,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:55,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 05:24:55,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:55,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 05:24:55,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226172500] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:55,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:55,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-01-18 05:24:55,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406708691] [2022-01-18 05:24:55,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:55,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:24:55,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:55,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:24:55,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:24:55,869 INFO L87 Difference]: Start difference. First operand 6644 states and 21656 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:56,011 INFO L93 Difference]: Finished difference Result 8899 states and 28902 transitions. [2022-01-18 05:24:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:24:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:56,030 INFO L225 Difference]: With dead ends: 8899 [2022-01-18 05:24:56,030 INFO L226 Difference]: Without dead ends: 8464 [2022-01-18 05:24:56,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:24:56,031 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 75 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:56,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 574 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8464 states. [2022-01-18 05:24:56,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8464 to 6769. [2022-01-18 05:24:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6769 states, 6768 states have (on average 3.255171394799054) internal successors, (22031), 6768 states have internal predecessors, (22031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:56,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6769 states to 6769 states and 22031 transitions. [2022-01-18 05:24:56,173 INFO L78 Accepts]: Start accepts. Automaton has 6769 states and 22031 transitions. Word has length 48 [2022-01-18 05:24:56,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:56,174 INFO L470 AbstractCegarLoop]: Abstraction has 6769 states and 22031 transitions. [2022-01-18 05:24:56,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 6769 states and 22031 transitions. [2022-01-18 05:24:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:56,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:56,187 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:56,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:56,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 05:24:56,403 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2028417455, now seen corresponding path program 6 times [2022-01-18 05:24:56,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:56,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207241363] [2022-01-18 05:24:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:56,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:56,468 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 05:24:56,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:56,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207241363] [2022-01-18 05:24:56,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207241363] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:56,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325652842] [2022-01-18 05:24:56,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:24:56,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:56,471 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:56,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 05:24:56,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 05:24:56,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:56,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:56,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 05:24:56,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-18 05:24:56,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325652842] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:56,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:56,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-01-18 05:24:56,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187196480] [2022-01-18 05:24:56,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:56,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 05:24:56,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 05:24:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:24:56,800 INFO L87 Difference]: Start difference. First operand 6769 states and 22031 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:56,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:56,914 INFO L93 Difference]: Finished difference Result 11547 states and 37607 transitions. [2022-01-18 05:24:56,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 05:24:56,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:56,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:56,939 INFO L225 Difference]: With dead ends: 11547 [2022-01-18 05:24:56,939 INFO L226 Difference]: Without dead ends: 11400 [2022-01-18 05:24:56,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 05:24:56,940 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 77 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:56,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 602 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:56,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11400 states. [2022-01-18 05:24:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11400 to 10354. [2022-01-18 05:24:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10354 states, 10353 states have (on average 3.3118902733507194) internal successors, (34288), 10353 states have internal predecessors, (34288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10354 states to 10354 states and 34288 transitions. [2022-01-18 05:24:57,123 INFO L78 Accepts]: Start accepts. Automaton has 10354 states and 34288 transitions. Word has length 48 [2022-01-18 05:24:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:57,123 INFO L470 AbstractCegarLoop]: Abstraction has 10354 states and 34288 transitions. [2022-01-18 05:24:57,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 10354 states and 34288 transitions. [2022-01-18 05:24:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:57,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:57,142 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:57,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:57,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:57,360 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:57,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1438983971, now seen corresponding path program 7 times [2022-01-18 05:24:57,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:57,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329349498] [2022-01-18 05:24:57,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:57,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:57,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:57,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:57,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329349498] [2022-01-18 05:24:57,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329349498] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:57,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694805095] [2022-01-18 05:24:57,416 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 05:24:57,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:57,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:57,417 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:57,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 05:24:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:57,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:57,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:57,588 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:57,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:57,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694805095] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:57,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:57,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 05:24:57,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382404276] [2022-01-18 05:24:57,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:57,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:24:57,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:24:57,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:57,775 INFO L87 Difference]: Start difference. First operand 10354 states and 34288 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:57,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:57,907 INFO L93 Difference]: Finished difference Result 13296 states and 43632 transitions. [2022-01-18 05:24:57,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:24:57,913 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:57,936 INFO L225 Difference]: With dead ends: 13296 [2022-01-18 05:24:57,936 INFO L226 Difference]: Without dead ends: 11854 [2022-01-18 05:24:57,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:57,936 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 97 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:57,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 775 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:57,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11854 states. [2022-01-18 05:24:58,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11854 to 7019. [2022-01-18 05:24:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7019 states, 7018 states have (on average 3.2460815047021945) internal successors, (22781), 7018 states have internal predecessors, (22781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7019 states to 7019 states and 22781 transitions. [2022-01-18 05:24:58,079 INFO L78 Accepts]: Start accepts. Automaton has 7019 states and 22781 transitions. Word has length 48 [2022-01-18 05:24:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:58,079 INFO L470 AbstractCegarLoop]: Abstraction has 7019 states and 22781 transitions. [2022-01-18 05:24:58,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7019 states and 22781 transitions. [2022-01-18 05:24:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:58,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:58,092 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:58,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:58,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:58,299 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash -561388669, now seen corresponding path program 8 times [2022-01-18 05:24:58,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:58,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133652157] [2022-01-18 05:24:58,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:58,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:58,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133652157] [2022-01-18 05:24:58,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133652157] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842931133] [2022-01-18 05:24:58,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 05:24:58,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:58,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:58,348 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:58,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 05:24:58,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 05:24:58,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:58,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:58,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:58,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:58,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:58,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842931133] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:58,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:58,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 05:24:58,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213011981] [2022-01-18 05:24:58,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:58,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:24:58,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:24:58,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:58,663 INFO L87 Difference]: Start difference. First operand 7019 states and 22781 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:58,793 INFO L93 Difference]: Finished difference Result 10813 states and 35013 transitions. [2022-01-18 05:24:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:24:58,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:58,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:58,814 INFO L225 Difference]: With dead ends: 10813 [2022-01-18 05:24:58,814 INFO L226 Difference]: Without dead ends: 10186 [2022-01-18 05:24:58,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:58,814 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 91 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:58,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 779 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10186 states. [2022-01-18 05:24:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10186 to 7527. [2022-01-18 05:24:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7527 states, 7526 states have (on average 3.233723093276641) internal successors, (24337), 7526 states have internal predecessors, (24337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7527 states to 7527 states and 24337 transitions. [2022-01-18 05:24:58,949 INFO L78 Accepts]: Start accepts. Automaton has 7527 states and 24337 transitions. Word has length 48 [2022-01-18 05:24:58,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:58,949 INFO L470 AbstractCegarLoop]: Abstraction has 7527 states and 24337 transitions. [2022-01-18 05:24:58,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7527 states and 24337 transitions. [2022-01-18 05:24:58,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:58,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:58,961 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:58,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 05:24:59,175 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,SelfDestructingSolverStorable14 [2022-01-18 05:24:59,175 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:24:59,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:24:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1150822153, now seen corresponding path program 9 times [2022-01-18 05:24:59,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:24:59,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977678036] [2022-01-18 05:24:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:24:59,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:24:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:24:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:59,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:24:59,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977678036] [2022-01-18 05:24:59,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977678036] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:24:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934902460] [2022-01-18 05:24:59,230 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 05:24:59,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:24:59,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:24:59,231 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:24:59,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 05:24:59,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 05:24:59,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:24:59,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:24:59,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:24:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:59,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:24:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:24:59,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934902460] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:24:59,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:24:59,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 05:24:59,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728411974] [2022-01-18 05:24:59,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:24:59,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:24:59,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:24:59,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:24:59,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:59,562 INFO L87 Difference]: Start difference. First operand 7527 states and 24337 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:59,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:24:59,683 INFO L93 Difference]: Finished difference Result 12429 states and 40214 transitions. [2022-01-18 05:24:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:24:59,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:24:59,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:24:59,706 INFO L225 Difference]: With dead ends: 12429 [2022-01-18 05:24:59,706 INFO L226 Difference]: Without dead ends: 12276 [2022-01-18 05:24:59,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:24:59,707 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 80 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:24:59,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 728 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:24:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12276 states. [2022-01-18 05:24:59,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12276 to 12112. [2022-01-18 05:24:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12112 states, 12111 states have (on average 3.2449838989348527) internal successors, (39300), 12111 states have internal predecessors, (39300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12112 states to 12112 states and 39300 transitions. [2022-01-18 05:24:59,906 INFO L78 Accepts]: Start accepts. Automaton has 12112 states and 39300 transitions. Word has length 48 [2022-01-18 05:24:59,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:24:59,906 INFO L470 AbstractCegarLoop]: Abstraction has 12112 states and 39300 transitions. [2022-01-18 05:24:59,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:24:59,906 INFO L276 IsEmpty]: Start isEmpty. Operand 12112 states and 39300 transitions. [2022-01-18 05:24:59,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:24:59,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:24:59,925 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:24:59,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 05:25:00,126 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,SelfDestructingSolverStorable15 [2022-01-18 05:25:00,126 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:25:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:25:00,126 INFO L85 PathProgramCache]: Analyzing trace with hash -331421949, now seen corresponding path program 10 times [2022-01-18 05:25:00,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:25:00,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435105374] [2022-01-18 05:25:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:25:00,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:25:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:25:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:00,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:25:00,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435105374] [2022-01-18 05:25:00,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435105374] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:25:00,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985698269] [2022-01-18 05:25:00,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 05:25:00,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:25:00,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:25:00,179 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:25:00,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 05:25:00,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 05:25:00,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:25:00,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:25:00,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:25:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:00,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:25:00,504 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:00,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985698269] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:25:00,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:25:00,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 05:25:00,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098399256] [2022-01-18 05:25:00,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:25:00,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:25:00,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:25:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:25:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:25:00,505 INFO L87 Difference]: Start difference. First operand 12112 states and 39300 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:00,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:25:00,665 INFO L93 Difference]: Finished difference Result 21741 states and 70711 transitions. [2022-01-18 05:25:00,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:25:00,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:25:00,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:25:00,710 INFO L225 Difference]: With dead ends: 21741 [2022-01-18 05:25:00,711 INFO L226 Difference]: Without dead ends: 19893 [2022-01-18 05:25:00,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:25:00,712 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 96 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:25:00,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 743 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:25:00,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19893 states. [2022-01-18 05:25:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19893 to 18976. [2022-01-18 05:25:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18976 states, 18975 states have (on average 3.25965744400527) internal successors, (61852), 18975 states have internal predecessors, (61852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18976 states to 18976 states and 61852 transitions. [2022-01-18 05:25:01,148 INFO L78 Accepts]: Start accepts. Automaton has 18976 states and 61852 transitions. Word has length 48 [2022-01-18 05:25:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:25:01,148 INFO L470 AbstractCegarLoop]: Abstraction has 18976 states and 61852 transitions. [2022-01-18 05:25:01,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 18976 states and 61852 transitions. [2022-01-18 05:25:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:25:01,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:25:01,179 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:25:01,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 05:25:01,383 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,SelfDestructingSolverStorable16 [2022-01-18 05:25:01,383 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:25:01,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:25:01,384 INFO L85 PathProgramCache]: Analyzing trace with hash 599454679, now seen corresponding path program 11 times [2022-01-18 05:25:01,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:25:01,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220878170] [2022-01-18 05:25:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:25:01,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:25:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:25:01,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:01,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:25:01,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220878170] [2022-01-18 05:25:01,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220878170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:25:01,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459968263] [2022-01-18 05:25:01,442 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 05:25:01,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:25:01,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:25:01,443 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:25:01,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 05:25:01,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 05:25:01,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:25:01,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:25:01,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:25:01,611 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:01,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:25:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:01,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459968263] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:25:01,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:25:01,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 05:25:01,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161520969] [2022-01-18 05:25:01,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:25:01,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:25:01,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:25:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:25:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:25:01,765 INFO L87 Difference]: Start difference. First operand 18976 states and 61852 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:25:02,106 INFO L93 Difference]: Finished difference Result 34095 states and 111504 transitions. [2022-01-18 05:25:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:25:02,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:25:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:25:02,176 INFO L225 Difference]: With dead ends: 34095 [2022-01-18 05:25:02,177 INFO L226 Difference]: Without dead ends: 30605 [2022-01-18 05:25:02,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:25:02,177 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 101 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:25:02,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 781 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:25:02,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30605 states. [2022-01-18 05:25:02,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30605 to 29305. [2022-01-18 05:25:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29305 states, 29304 states have (on average 3.2807125307125307) internal successors, (96138), 29304 states have internal predecessors, (96138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29305 states to 29305 states and 96138 transitions. [2022-01-18 05:25:02,724 INFO L78 Accepts]: Start accepts. Automaton has 29305 states and 96138 transitions. Word has length 48 [2022-01-18 05:25:02,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:25:02,725 INFO L470 AbstractCegarLoop]: Abstraction has 29305 states and 96138 transitions. [2022-01-18 05:25:02,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:02,725 INFO L276 IsEmpty]: Start isEmpty. Operand 29305 states and 96138 transitions. [2022-01-18 05:25:02,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-18 05:25:02,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:25:02,934 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:25:02,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-18 05:25:03,151 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,SelfDestructingSolverStorable17 [2022-01-18 05:25:03,151 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:25:03,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:25:03,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1195958441, now seen corresponding path program 12 times [2022-01-18 05:25:03,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:25:03,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366129266] [2022-01-18 05:25:03,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:25:03,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:25:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:25:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:03,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:25:03,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366129266] [2022-01-18 05:25:03,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366129266] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:25:03,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586757661] [2022-01-18 05:25:03,209 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 05:25:03,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:25:03,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:25:03,210 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:25:03,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 05:25:03,233 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 05:25:03,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 05:25:03,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 05:25:03,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:25:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:03,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:25:03,516 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 05:25:03,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586757661] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:25:03,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:25:03,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2022-01-18 05:25:03,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997582113] [2022-01-18 05:25:03,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:25:03,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 05:25:03,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:25:03,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 05:25:03,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:25:03,518 INFO L87 Difference]: Start difference. First operand 29305 states and 96138 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:25:03,904 INFO L93 Difference]: Finished difference Result 46568 states and 152448 transitions. [2022-01-18 05:25:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 05:25:03,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-18 05:25:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:25:04,011 INFO L225 Difference]: With dead ends: 46568 [2022-01-18 05:25:04,012 INFO L226 Difference]: Without dead ends: 44858 [2022-01-18 05:25:04,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-18 05:25:04,012 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 91 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 05:25:04,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 804 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 05:25:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44858 states. [2022-01-18 05:25:04,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44858 to 44258. [2022-01-18 05:25:04,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44258 states, 44257 states have (on average 3.277741374245882) internal successors, (145063), 44257 states have internal predecessors, (145063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44258 states to 44258 states and 145063 transitions. [2022-01-18 05:25:04,977 INFO L78 Accepts]: Start accepts. Automaton has 44258 states and 145063 transitions. Word has length 48 [2022-01-18 05:25:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:25:04,977 INFO L470 AbstractCegarLoop]: Abstraction has 44258 states and 145063 transitions. [2022-01-18 05:25:04,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 44258 states and 145063 transitions. [2022-01-18 05:25:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 05:25:05,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 05:25:05,051 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:25:05,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 05:25:05,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:25:05,252 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 05:25:05,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 05:25:05,253 INFO L85 PathProgramCache]: Analyzing trace with hash 194571165, now seen corresponding path program 1 times [2022-01-18 05:25:05,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 05:25:05,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783591515] [2022-01-18 05:25:05,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:25:05,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 05:25:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:25:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:25:05,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 05:25:05,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783591515] [2022-01-18 05:25:05,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783591515] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 05:25:05,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310293403] [2022-01-18 05:25:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 05:25:05,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 05:25:05,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 05:25:05,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 05:25:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 05:25:05,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 05:25:05,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 05:25:05,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 05:25:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:25:05,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 05:25:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 05:25:05,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310293403] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 05:25:05,851 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 05:25:05,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-01-18 05:25:05,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42930073] [2022-01-18 05:25:05,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 05:25:05,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 05:25:05,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 05:25:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 05:25:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:25:05,852 INFO L87 Difference]: Start difference. First operand 44258 states and 145063 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:06,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 05:25:06,196 INFO L93 Difference]: Finished difference Result 44256 states and 145061 transitions. [2022-01-18 05:25:06,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 05:25:06,197 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 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 59 [2022-01-18 05:25:06,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 05:25:06,197 INFO L225 Difference]: With dead ends: 44256 [2022-01-18 05:25:06,197 INFO L226 Difference]: Without dead ends: 0 [2022-01-18 05:25:06,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 116 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-18 05:25:06,197 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 106 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 05:25:06,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 967 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 05:25:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-18 05:25:06,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-18 05:25:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-18 05:25:06,198 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2022-01-18 05:25:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 05:25:06,198 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-18 05:25:06,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 05:25:06,198 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-18 05:25:06,198 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-18 05:25:06,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 05:25:06,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 05:25:06,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 05:25:06,200 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 05:25:06,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-18 05:25:06,407 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,SelfDestructingSolverStorable19 [2022-01-18 05:25:06,410 INFO L732 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 05:25:06,412 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 05:25:06,413 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 05:25:06,423 INFO L202 PluginConnector]: Adding new model misc-3-extended.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 05:25:06 BasicIcfg [2022-01-18 05:25:06,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 05:25:06,423 INFO L158 Benchmark]: Toolchain (without parser) took 16106.73ms. Allocated memory was 392.2MB in the beginning and 3.4GB in the end (delta: 3.0GB). Free memory was 352.7MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 539.5MB. Max. memory is 16.0GB. [2022-01-18 05:25:06,423 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 392.2MB. Free memory is still 353.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 05:25:06,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.16ms. Allocated memory is still 392.2MB. Free memory was 352.6MB in the beginning and 351.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 05:25:06,424 INFO L158 Benchmark]: Boogie Preprocessor took 10.26ms. Allocated memory is still 392.2MB. Free memory was 351.1MB in the beginning and 350.1MB in the end (delta: 973.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 05:25:06,424 INFO L158 Benchmark]: RCFGBuilder took 159.47ms. Allocated memory is still 392.2MB. Free memory was 350.0MB in the beginning and 340.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 05:25:06,427 INFO L158 Benchmark]: TraceAbstraction took 15909.57ms. Allocated memory was 392.2MB in the beginning and 3.4GB in the end (delta: 3.0GB). Free memory was 340.2MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 526.9MB. Max. memory is 16.0GB. [2022-01-18 05:25:06,429 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 0.12ms. Allocated memory is still 392.2MB. Free memory is still 353.8MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.16ms. Allocated memory is still 392.2MB. Free memory was 352.6MB in the beginning and 351.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 10.26ms. Allocated memory is still 392.2MB. Free memory was 351.1MB in the beginning and 350.1MB in the end (delta: 973.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 159.47ms. Allocated memory is still 392.2MB. Free memory was 350.0MB in the beginning and 340.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 15909.57ms. Allocated memory was 392.2MB in the beginning and 3.4GB in the end (delta: 3.0GB). Free memory was 340.2MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 526.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 100]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 69 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 15.8s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.5s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1323 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1323 mSDsluCounter, 9020 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7964 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2632 IncrementalHoareTripleChecker+Invalid, 2760 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 1866 mSDtfsCounter, 2632 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1367 GetRequests, 1249 SyntacticMatches, 39 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44258occurred in iteration=19, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 20 MinimizatonAttempts, 17539 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 1488 NumberOfCodeBlocks, 1479 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2077 ConstructedInterpolants, 0 QuantifiedInterpolants, 13056 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1054 ConjunctsInSsa, 199 ConjunctsInUnsatCore, 46 InterpolantComputations, 7 PerfectInterpolantSequences, 135/825 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-18 05:25:06,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...