/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis FINITE_AUTOMATA -i ../../../trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 17:47:24,729 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 17:47:24,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 17:47:24,793 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 17:47:24,793 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 17:47:24,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 17:47:24,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 17:47:24,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 17:47:24,818 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 17:47:24,818 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 17:47:24,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 17:47:24,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 17:47:24,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 17:47:24,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 17:47:24,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 17:47:24,820 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 17:47:24,821 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:47:24,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:47:24,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 17:47:24,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 17:47:24,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 17:47:24,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 17:47:24,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 17:47:24,822 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> FINITE_AUTOMATA [2025-04-13 17:47:25,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 17:47:25,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 17:47:25,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 17:47:25,039 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 17:47:25,041 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 17:47:25,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c [2025-04-13 17:47:26,345 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2cf08d5/ec7a4486f2fb4dd4bbb6c7989fc9edc6/FLAG5171494f1 [2025-04-13 17:47:26,545 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 17:47:26,545 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c [2025-04-13 17:47:26,551 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2cf08d5/ec7a4486f2fb4dd4bbb6c7989fc9edc6/FLAG5171494f1 [2025-04-13 17:47:27,395 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2cf08d5/ec7a4486f2fb4dd4bbb6c7989fc9edc6 [2025-04-13 17:47:27,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 17:47:27,400 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 17:47:27,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 17:47:27,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 17:47:27,404 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 17:47:27,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6219c284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27, skipping insertion in model container [2025-04-13 17:47:27,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 17:47:27,599 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c[3111,3124] [2025-04-13 17:47:27,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:47:27,620 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 17:47:27,655 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-subst.wvr.c[3111,3124] [2025-04-13 17:47:27,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 17:47:27,673 INFO L204 MainTranslator]: Completed translation [2025-04-13 17:47:27,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27 WrapperNode [2025-04-13 17:47:27,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 17:47:27,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 17:47:27,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 17:47:27,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 17:47:27,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,705 INFO L138 Inliner]: procedures = 22, calls = 16, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 169 [2025-04-13 17:47:27,706 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 17:47:27,706 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 17:47:27,706 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 17:47:27,706 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 17:47:27,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,728 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 17:47:27,728 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,731 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,732 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,735 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,740 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 17:47:27,741 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 17:47:27,741 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 17:47:27,741 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 17:47:27,742 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (1/1) ... [2025-04-13 17:47:27,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 17:47:27,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 17:47:27,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 17:47:27,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 17:47:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 17:47:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 17:47:27,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 17:47:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 17:47:27,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 17:47:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 17:47:27,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 17:47:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 17:47:27,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 17:47:27,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 17:47:27,781 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 17:47:27,847 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 17:47:27,849 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 17:47:28,078 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 17:47:28,078 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 17:47:28,078 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 17:47:28,393 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 17:47:28,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:47:28 BoogieIcfgContainer [2025-04-13 17:47:28,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 17:47:28,395 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 17:47:28,395 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 17:47:28,398 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 17:47:28,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 05:47:27" (1/3) ... [2025-04-13 17:47:28,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c1063c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:47:28, skipping insertion in model container [2025-04-13 17:47:28,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 05:47:27" (2/3) ... [2025-04-13 17:47:28,400 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c1063c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 05:47:28, skipping insertion in model container [2025-04-13 17:47:28,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 05:47:28" (3/3) ... [2025-04-13 17:47:28,401 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2025-04-13 17:47:28,413 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 17:47:28,414 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-exp-term-subst.wvr.c that has 4 procedures, 19 locations, 15 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 17:47:28,414 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 17:47:28,463 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 17:47:28,485 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 18 transitions, 57 flow [2025-04-13 17:47:28,495 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:28,513 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 17:47:28,523 INFO L340 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53363aef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 17:47:28,524 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 17:47:28,525 INFO L278 IsEmpty]: Start isEmpty. Operand has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:28,531 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:47:28,531 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:47:28,531 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:47:28,532 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 17:47:28,536 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:47:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1773121312, now seen corresponding path program 1 times [2025-04-13 17:47:28,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:47:28,542 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206303036] [2025-04-13 17:47:28,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 17:47:28,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:47:28,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:47:28,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:47:28,799 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 17:47:28,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:47:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:47:31,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:47:31,025 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206303036] [2025-04-13 17:47:31,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206303036] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:47:31,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:47:31,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 17:47:31,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162374272] [2025-04-13 17:47:31,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:47:31,029 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:47:31,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:47:31,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:47:31,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:47:31,047 INFO L87 Difference]: Start difference. First operand has 38 states, 37 states have (on average 1.864864864864865) internal successors, (69), 37 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:31,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:47:31,305 INFO L93 Difference]: Finished difference Result 56 states and 88 transitions. [2025-04-13 17:47:31,306 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:47:31,307 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:47:31,307 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:47:31,311 INFO L225 Difference]: With dead ends: 56 [2025-04-13 17:47:31,311 INFO L226 Difference]: Without dead ends: 44 [2025-04-13 17:47:31,313 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:47:31,316 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:47:31,316 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:47:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-04-13 17:47:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2025-04-13 17:47:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2025-04-13 17:47:31,340 INFO L79 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 14 [2025-04-13 17:47:31,340 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:47:31,340 INFO L485 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2025-04-13 17:47:31,340 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:31,341 INFO L278 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2025-04-13 17:47:31,342 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:47:31,343 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:47:31,343 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:47:31,343 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 17:47:31,343 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 17:47:31,344 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:47:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1985832574, now seen corresponding path program 2 times [2025-04-13 17:47:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:47:31,344 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273935093] [2025-04-13 17:47:31,344 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 17:47:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:47:31,358 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:47:31,392 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:47:31,392 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 17:47:31,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:47:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:47:32,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:47:32,890 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273935093] [2025-04-13 17:47:32,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273935093] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:47:32,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:47:32,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 17:47:32,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093723288] [2025-04-13 17:47:32,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:47:32,891 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:47:32,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:47:32,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:47:32,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:47:32,892 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:33,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:47:33,074 INFO L93 Difference]: Finished difference Result 53 states and 79 transitions. [2025-04-13 17:47:33,075 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:47:33,075 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:47:33,075 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:47:33,075 INFO L225 Difference]: With dead ends: 53 [2025-04-13 17:47:33,075 INFO L226 Difference]: Without dead ends: 37 [2025-04-13 17:47:33,076 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:47:33,076 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:47:33,076 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:47:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-04-13 17:47:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-04-13 17:47:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 49 transitions. [2025-04-13 17:47:33,079 INFO L79 Accepts]: Start accepts. Automaton has 31 states and 49 transitions. Word has length 14 [2025-04-13 17:47:33,079 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:47:33,079 INFO L485 AbstractCegarLoop]: Abstraction has 31 states and 49 transitions. [2025-04-13 17:47:33,079 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:33,079 INFO L278 IsEmpty]: Start isEmpty. Operand 31 states and 49 transitions. [2025-04-13 17:47:33,079 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:47:33,079 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:47:33,079 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:47:33,079 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 17:47:33,080 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 17:47:33,080 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:47:33,080 INFO L85 PathProgramCache]: Analyzing trace with hash -917814658, now seen corresponding path program 3 times [2025-04-13 17:47:33,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:47:33,080 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208694913] [2025-04-13 17:47:33,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 17:47:33,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:47:33,087 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:47:33,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:47:33,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 17:47:33,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:47:34,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:47:34,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:47:34,512 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208694913] [2025-04-13 17:47:34,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208694913] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:47:34,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:47:34,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 17:47:34,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27922168] [2025-04-13 17:47:34,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:47:34,514 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-04-13 17:47:34,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:47:34,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-04-13 17:47:34,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-04-13 17:47:34,515 INFO L87 Difference]: Start difference. First operand 31 states and 49 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:47:34,795 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2025-04-13 17:47:34,795 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-04-13 17:47:34,796 INFO L79 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:47:34,796 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:47:34,796 INFO L225 Difference]: With dead ends: 43 [2025-04-13 17:47:34,796 INFO L226 Difference]: Without dead ends: 31 [2025-04-13 17:47:34,796 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2025-04-13 17:47:34,797 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:47:34,797 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:47:34,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-04-13 17:47:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2025-04-13 17:47:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.5) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:34,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2025-04-13 17:47:34,802 INFO L79 Accepts]: Start accepts. Automaton has 25 states and 36 transitions. Word has length 14 [2025-04-13 17:47:34,802 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:47:34,802 INFO L485 AbstractCegarLoop]: Abstraction has 25 states and 36 transitions. [2025-04-13 17:47:34,802 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:34,802 INFO L278 IsEmpty]: Start isEmpty. Operand 25 states and 36 transitions. [2025-04-13 17:47:34,803 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:47:34,803 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:47:34,803 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:47:34,803 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 17:47:34,803 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 17:47:34,803 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:47:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash -445035010, now seen corresponding path program 4 times [2025-04-13 17:47:34,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:47:34,803 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280475349] [2025-04-13 17:47:34,803 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 17:47:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:47:34,811 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 14 statements into 2 equivalence classes. [2025-04-13 17:47:34,822 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:47:34,822 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 17:47:34,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:47:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:47:35,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:47:35,731 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280475349] [2025-04-13 17:47:35,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280475349] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:47:35,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:47:35,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 17:47:35,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342154293] [2025-04-13 17:47:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:47:35,732 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:47:35,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:47:35,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:47:35,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:47:35,733 INFO L87 Difference]: Start difference. First operand 25 states and 36 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:47:36,066 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2025-04-13 17:47:36,066 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:47:36,067 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:47:36,067 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:47:36,067 INFO L225 Difference]: With dead ends: 33 [2025-04-13 17:47:36,067 INFO L226 Difference]: Without dead ends: 21 [2025-04-13 17:47:36,067 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-04-13 17:47:36,068 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-04-13 17:47:36,068 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-04-13 17:47:36,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-04-13 17:47:36,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-04-13 17:47:36,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 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) [2025-04-13 17:47:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2025-04-13 17:47:36,070 INFO L79 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 14 [2025-04-13 17:47:36,070 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:47:36,070 INFO L485 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2025-04-13 17:47:36,070 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:36,070 INFO L278 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2025-04-13 17:47:36,071 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:47:36,071 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:47:36,071 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:47:36,071 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 17:47:36,072 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 17:47:36,072 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:47:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash 448585808, now seen corresponding path program 5 times [2025-04-13 17:47:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:47:36,072 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932264297] [2025-04-13 17:47:36,072 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 17:47:36,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:47:36,082 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:47:36,106 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:47:36,107 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 17:47:36,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:47:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:47:36,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:47:36,872 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932264297] [2025-04-13 17:47:36,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932264297] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:47:36,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:47:36,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 17:47:36,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840823978] [2025-04-13 17:47:36,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:47:36,873 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:47:36,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:47:36,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:47:36,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:47:36,873 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:37,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:47:37,038 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2025-04-13 17:47:37,038 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:47:37,038 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:47:37,038 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:47:37,039 INFO L225 Difference]: With dead ends: 27 [2025-04-13 17:47:37,039 INFO L226 Difference]: Without dead ends: 18 [2025-04-13 17:47:37,039 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-04-13 17:47:37,039 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:47:37,039 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:47:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-04-13 17:47:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-04-13 17:47:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:37,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2025-04-13 17:47:37,041 INFO L79 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2025-04-13 17:47:37,041 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:47:37,041 INFO L485 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2025-04-13 17:47:37,041 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:37,041 INFO L278 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2025-04-13 17:47:37,041 INFO L284 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-04-13 17:47:37,041 INFO L210 NwaCegarLoop]: Found error trace [2025-04-13 17:47:37,041 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 17:47:37,041 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 17:47:37,042 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 17:47:37,042 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 17:47:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1655241056, now seen corresponding path program 6 times [2025-04-13 17:47:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 17:47:37,042 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609725135] [2025-04-13 17:47:37,042 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 17:47:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 17:47:37,049 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 14 statements into 1 equivalence classes. [2025-04-13 17:47:37,067 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-04-13 17:47:37,067 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-13 17:47:37,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 17:47:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 17:47:37,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 17:47:37,842 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609725135] [2025-04-13 17:47:37,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609725135] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 17:47:37,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 17:47:37,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 17:47:37,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919251481] [2025-04-13 17:47:37,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 17:47:37,842 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 17:47:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 17:47:37,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 17:47:37,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 17:47:37,845 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-04-13 17:47:38,131 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2025-04-13 17:47:38,131 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 17:47:38,131 INFO L79 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-04-13 17:47:38,131 INFO L85 Accepts]: Finished accepts. some prefix is accepted. [2025-04-13 17:47:38,132 INFO L225 Difference]: With dead ends: 18 [2025-04-13 17:47:38,132 INFO L226 Difference]: Without dead ends: 0 [2025-04-13 17:47:38,132 INFO L436 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-04-13 17:47:38,133 INFO L437 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-04-13 17:47:38,133 INFO L438 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-04-13 17:47:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-04-13 17:47:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-04-13 17:47:38,134 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) [2025-04-13 17:47:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-04-13 17:47:38,134 INFO L79 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2025-04-13 17:47:38,135 INFO L85 Accepts]: Finished accepts. word is rejected. [2025-04-13 17:47:38,135 INFO L485 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-04-13 17:47:38,135 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 17:47:38,135 INFO L278 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-04-13 17:47:38,135 INFO L284 IsEmpty]: Finished isEmpty. No accepting run. [2025-04-13 17:47:38,137 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 17:47:38,137 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 17:47:38,137 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 17:47:38,137 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 17:47:38,137 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 17:47:38,139 INFO L422 BasicCegarLoop]: Path program histogram: [6] [2025-04-13 17:47:38,142 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 17:47:38,142 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 17:47:38,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 05:47:38 BasicIcfg [2025-04-13 17:47:38,147 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 17:47:38,147 INFO L158 Benchmark]: Toolchain (without parser) took 10747.64ms. Allocated memory was 125.8MB in the beginning and 578.8MB in the end (delta: 453.0MB). Free memory was 87.3MB in the beginning and 261.2MB in the end (delta: -173.9MB). Peak memory consumption was 277.3MB. Max. memory is 8.0GB. [2025-04-13 17:47:38,148 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 163.6MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:47:38,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.73ms. Allocated memory is still 125.8MB. Free memory was 86.6MB in the beginning and 72.2MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 17:47:38,148 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.69ms. Allocated memory is still 125.8MB. Free memory was 72.2MB in the beginning and 69.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 17:47:38,148 INFO L158 Benchmark]: Boogie Preprocessor took 34.31ms. Allocated memory is still 125.8MB. Free memory was 69.4MB in the beginning and 68.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 17:47:38,148 INFO L158 Benchmark]: RCFGBuilder took 652.63ms. Allocated memory is still 125.8MB. Free memory was 67.3MB in the beginning and 45.1MB in the end (delta: 22.2MB). Peak memory consumption was 56.1MB. Max. memory is 8.0GB. [2025-04-13 17:47:38,148 INFO L158 Benchmark]: TraceAbstraction took 9752.05ms. Allocated memory was 125.8MB in the beginning and 578.8MB in the end (delta: 453.0MB). Free memory was 44.4MB in the beginning and 261.2MB in the end (delta: -216.8MB). Peak memory consumption was 238.0MB. Max. memory is 8.0GB. [2025-04-13 17:47:38,149 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 163.6MB. Free memory is still 91.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 272.73ms. Allocated memory is still 125.8MB. Free memory was 86.6MB in the beginning and 72.2MB in the end (delta: 14.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.69ms. Allocated memory is still 125.8MB. Free memory was 72.2MB in the beginning and 69.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.31ms. Allocated memory is still 125.8MB. Free memory was 69.4MB in the beginning and 68.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 652.63ms. Allocated memory is still 125.8MB. Free memory was 67.3MB in the beginning and 45.1MB in the end (delta: 22.2MB). Peak memory consumption was 56.1MB. Max. memory is 8.0GB. * TraceAbstraction took 9752.05ms. Allocated memory was 125.8MB in the beginning and 578.8MB in the end (delta: 453.0MB). Free memory was 44.4MB in the beginning and 261.2MB in the end (delta: -216.8MB). Peak memory consumption was 238.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 81]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 28 locations, 27 edges, 4 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 164 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 164 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 348 IncrementalHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 0 mSDtfsCounter, 348 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2395 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 17:47:38,166 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...