/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w32_d128_e0.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-17387ad-m [2024-11-06 14:38:25,117 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 14:38:25,180 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-06 14:38:25,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 14:38:25,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 14:38:25,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 14:38:25,210 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 14:38:25,211 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 14:38:25,211 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 14:38:25,211 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 14:38:25,212 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 14:38:25,212 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 14:38:25,212 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 14:38:25,214 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 14:38:25,214 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 14:38:25,214 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 14:38:25,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 14:38:25,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 14:38:25,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 14:38:25,217 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 14:38:25,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 14:38:25,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-06 14:38:25,220 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-06 14:38:25,221 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 14:38:25,221 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-06 14:38:25,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 14:38:25,221 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 14:38:25,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 14:38:25,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 14:38:25,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 14:38:25,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 14:38:25,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 14:38:25,222 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 14:38:25,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 14:38:25,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 14:38:25,223 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-06 14:38:25,223 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-06 14:38:25,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 14:38:25,223 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 14:38:25,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 14:38:25,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 14:38:25,224 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX [2024-11-06 14:38:25,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 14:38:25,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 14:38:25,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 14:38:25,437 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 14:38:25,437 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 14:38:25,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w32_d128_e0.c [2024-11-06 14:38:26,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 14:38:27,190 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 14:38:27,191 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w32_d128_e0.c [2024-11-06 14:38:27,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce6208bc7/a81c8602b2914152995bd2baabefb778/FLAG113963bf0 [2024-11-06 14:38:27,298 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce6208bc7/a81c8602b2914152995bd2baabefb778 [2024-11-06 14:38:27,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 14:38:27,302 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-06 14:38:27,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 14:38:27,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 14:38:27,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 14:38:27,308 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:38:27" (1/1) ... [2024-11-06 14:38:27,309 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598a1d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:27, skipping insertion in model container [2024-11-06 14:38:27,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:38:27" (1/1) ... [2024-11-06 14:38:27,450 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 14:38:27,705 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w32_d128_e0.c[1326,1339] [2024-11-06 14:38:28,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 14:38:28,350 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 14:38:28,358 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.arbitrated_top_n3_w32_d128_e0.c[1326,1339] [2024-11-06 14:38:28,871 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 14:38:28,883 INFO L204 MainTranslator]: Completed translation [2024-11-06 14:38:28,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28 WrapperNode [2024-11-06 14:38:28,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 14:38:28,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 14:38:28,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 14:38:28,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 14:38:28,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:28,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,369 INFO L138 Inliner]: procedures = 18, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 12834 [2024-11-06 14:38:29,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 14:38:29,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 14:38:29,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 14:38:29,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 14:38:29,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,505 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]. [2024-11-06 14:38:29,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,806 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 14:38:29,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 14:38:29,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 14:38:29,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 14:38:29,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (1/1) ... [2024-11-06 14:38:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 14:38:29,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:38:29,844 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) [2024-11-06 14:38:29,845 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 [2024-11-06 14:38:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 14:38:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-06 14:38:29,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-06 14:38:29,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-06 14:38:29,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 14:38:29,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 14:38:30,942 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 14:38:30,943 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 14:38:45,691 INFO L? ?]: Removed 3641 outVars from TransFormulas that were not future-live. [2024-11-06 14:38:45,692 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 14:38:45,703 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 14:38:45,703 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 14:38:45,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:38:45 BoogieIcfgContainer [2024-11-06 14:38:45,703 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 14:38:45,705 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 14:38:45,705 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 14:38:45,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 14:38:45,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:38:27" (1/3) ... [2024-11-06 14:38:45,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbc4226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:38:45, skipping insertion in model container [2024-11-06 14:38:45,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:38:28" (2/3) ... [2024-11-06 14:38:45,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbc4226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:38:45, skipping insertion in model container [2024-11-06 14:38:45,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:38:45" (3/3) ... [2024-11-06 14:38:45,710 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.arbitrated_top_n3_w32_d128_e0.c [2024-11-06 14:38:45,722 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 14:38:45,722 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 14:38:45,767 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 14:38:45,772 INFO L333 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=PETRI_NET, 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;@31cb9e0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 14:38:45,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 14:38:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-06 14:38:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-06 14:38:45,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:38:45,783 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2024-11-06 14:38:45,783 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:38:45,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:38:45,787 INFO L85 PathProgramCache]: Analyzing trace with hash -209771273, now seen corresponding path program 1 times [2024-11-06 14:38:45,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:38:45,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781670184] [2024-11-06 14:38:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:38:45,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:38:45,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:38:45,809 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) [2024-11-06 14:38:45,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-06 14:38:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:38:48,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 4295 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 14:38:48,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:38:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-06 14:38:49,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:38:49,514 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:38:49,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781670184] [2024-11-06 14:38:49,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781670184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 14:38:49,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [366341621] [2024-11-06 14:38:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:38:49,517 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 14:38:49,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 14:38:49,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 14:38:49,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-06 14:38:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:38:55,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 4295 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-06 14:38:55,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:38:55,662 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-06 14:38:55,662 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 14:38:55,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [366341621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 14:38:55,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 14:38:55,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2024-11-06 14:38:55,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685975169] [2024-11-06 14:38:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 14:38:55,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 14:38:55,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:38:55,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 14:38:55,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-06 14:38:55,687 INFO L87 Difference]: Start difference. First operand has 34 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-06 14:38:58,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 14:38:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:38:59,674 INFO L93 Difference]: Finished difference Result 85 states and 140 transitions. [2024-11-06 14:38:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 14:38:59,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 65 [2024-11-06 14:38:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:38:59,683 INFO L225 Difference]: With dead ends: 85 [2024-11-06 14:38:59,683 INFO L226 Difference]: Without dead ends: 53 [2024-11-06 14:38:59,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-06 14:38:59,692 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-06 14:38:59,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-06 14:38:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-06 14:38:59,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-06 14:38:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-06 14:38:59,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2024-11-06 14:38:59,755 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 72 transitions. Word has length 65 [2024-11-06 14:38:59,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:38:59,756 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 72 transitions. [2024-11-06 14:38:59,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-06 14:38:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 72 transitions. [2024-11-06 14:38:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-06 14:38:59,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:38:59,766 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-06 14:38:59,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-06 14:39:00,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 14:39:00,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:39:00,168 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:39:00,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:39:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1242097501, now seen corresponding path program 1 times [2024-11-06 14:39:00,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:39:00,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247335384] [2024-11-06 14:39:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:39:00,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:39:00,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:39:00,188 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) [2024-11-06 14:39:00,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-06 14:39:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:39:04,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 8375 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-06 14:39:04,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:39:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-06 14:39:06,811 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:39:07,098 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-06 14:39:07,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247335384] [2024-11-06 14:39:07,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247335384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 14:39:07,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1482615648] [2024-11-06 14:39:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 14:39:07,100 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-06 14:39:07,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-06 14:39:07,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-06 14:39:07,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-06 14:39:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 14:39:19,031 INFO L255 TraceCheckSpWp]: Trace formula consists of 8375 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-06 14:39:19,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 14:39:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 18 proven. 61 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2024-11-06 14:39:20,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 14:39:20,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1482615648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 14:39:20,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-06 14:39:20,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-11-06 14:39:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208315103] [2024-11-06 14:39:20,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-06 14:39:20,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-06 14:39:20,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-06 14:39:20,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-06 14:39:20,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-06 14:39:20,220 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-06 14:39:25,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.81s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 14:39:31,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 14:39:32,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-06 14:39:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 14:39:32,830 INFO L93 Difference]: Finished difference Result 78 states and 107 transitions. [2024-11-06 14:39:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 14:39:32,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 128 [2024-11-06 14:39:32,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 14:39:32,834 INFO L225 Difference]: With dead ends: 78 [2024-11-06 14:39:32,834 INFO L226 Difference]: Without dead ends: 76 [2024-11-06 14:39:32,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-06 14:39:32,835 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 9 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-06 14:39:32,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 160 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 353 Invalid, 1 Unknown, 0 Unchecked, 12.3s Time] [2024-11-06 14:39:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-06 14:39:32,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-06 14:39:32,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 44 states have internal predecessors, (45), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-06 14:39:32,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2024-11-06 14:39:32,852 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 128 [2024-11-06 14:39:32,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 14:39:32,852 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2024-11-06 14:39:32,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 4 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-06 14:39:32,853 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2024-11-06 14:39:32,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-06 14:39:32,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 14:39:32,855 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-06 14:39:32,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-06 14:39:33,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 14:39:33,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:39:33,260 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 14:39:33,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 14:39:33,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2139398281, now seen corresponding path program 2 times [2024-11-06 14:39:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-06 14:39:33,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584597591] [2024-11-06 14:39:33,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 14:39:33,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 14:39:33,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 14:39:33,273 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) [2024-11-06 14:39:33,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process