/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver bitwuzla -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/float-benchs/rlim_exit.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:49:20,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:49:20,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 13:49:20,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:49:20,845 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:49:20,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:49:20,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:49:20,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:49:20,877 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:49:20,877 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:49:20,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:49:20,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:49:20,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:49:20,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:49:20,879 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:49:20,879 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:49:20,880 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:49:20,880 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:49:20,880 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:49:20,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:49:20,881 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:49:20,881 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:49:20,882 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:49:20,882 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:49:20,882 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:49:20,882 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:49:20,883 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:49:20,883 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:49:20,883 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:49:20,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:49:20,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:49:20,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:49:20,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:49:20,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:49:20,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:49:20,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:49:20,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:49:20,890 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:49:20,890 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:49:20,890 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:49:20,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:49:20,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:49:20,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:49:20,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:49:20,891 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:49:21,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:49:21,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:49:21,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:49:21,153 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:49:21,153 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:49:21,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_exit.c [2024-11-03 13:49:22,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:49:22,704 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:49:22,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_exit.c [2024-11-03 13:49:22,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daae1925a/f501145aad3749a4a6a80789f8aa91b8/FLAG69d014360 [2024-11-03 13:49:23,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/daae1925a/f501145aad3749a4a6a80789f8aa91b8 [2024-11-03 13:49:23,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:49:23,116 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:49:23,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:49:23,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:49:23,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:49:23,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e905227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23, skipping insertion in model container [2024-11-03 13:49:23,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,141 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:49:23,293 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_exit.c[446,459] [2024-11-03 13:49:23,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:49:23,318 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:49:23,329 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_exit.c[446,459] [2024-11-03 13:49:23,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:49:23,353 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:49:23,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23 WrapperNode [2024-11-03 13:49:23,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:49:23,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:49:23,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:49:23,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:49:23,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,374 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,388 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2024-11-03 13:49:23,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:49:23,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:49:23,389 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:49:23,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:49:23,398 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,400 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,409 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]. [2024-11-03 13:49:23,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,409 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,415 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,422 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,424 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,425 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,427 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:49:23,428 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:49:23,428 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:49:23,428 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:49:23,429 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (1/1) ... [2024-11-03 13:49:23,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:49:23,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:49:23,461 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) [2024-11-03 13:49:23,472 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 [2024-11-03 13:49:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:49:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:49:23,497 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 13:49:23,498 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 13:49:23,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:49:23,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:49:23,559 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:49:23,561 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:49:23,852 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-03 13:49:23,852 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:49:23,867 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:49:23,867 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:49:23,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:49:23 BoogieIcfgContainer [2024-11-03 13:49:23,868 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:49:23,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:49:23,871 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:49:23,873 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:49:23,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:49:23" (1/3) ... [2024-11-03 13:49:23,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b3e047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:49:23, skipping insertion in model container [2024-11-03 13:49:23,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:23" (2/3) ... [2024-11-03 13:49:23,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b3e047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:49:23, skipping insertion in model container [2024-11-03 13:49:23,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:49:23" (3/3) ... [2024-11-03 13:49:23,876 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_exit.c [2024-11-03 13:49:23,889 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:49:23,889 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:49:23,935 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:49:23,941 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;@42f2b847, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:49:23,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:49:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-03 13:49:23,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-03 13:49:23,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:49:23,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-03 13:49:23,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:49:23,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:49:23,955 INFO L85 PathProgramCache]: Analyzing trace with hash 889617946, now seen corresponding path program 1 times [2024-11-03 13:49:23,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:49:23,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67476663] [2024-11-03 13:49:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:49:23,965 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:49:23,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:23,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:49:23,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:49:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:49:24,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:49:24,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:49:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:49:24,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:49:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:49:24,062 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:49:24,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67476663] [2024-11-03 13:49:24,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [67476663] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:49:24,063 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:49:24,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:49:24,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061524380] [2024-11-03 13:49:24,065 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:49:24,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:49:24,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:49:24,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:49:24,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:49:24,090 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:49:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:49:24,141 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2024-11-03 13:49:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:49:24,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-03 13:49:24,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:49:24,149 INFO L225 Difference]: With dead ends: 48 [2024-11-03 13:49:24,149 INFO L226 Difference]: Without dead ends: 25 [2024-11-03 13:49:24,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:49:24,156 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:49:24,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 51 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:49:24,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-03 13:49:24,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-03 13:49:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-03 13:49:24,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-11-03 13:49:24,190 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 6 [2024-11-03 13:49:24,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:49:24,191 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-11-03 13:49:24,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:49:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-11-03 13:49:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-03 13:49:24,194 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:49:24,195 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-03 13:49:24,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:49:24,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:24,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:49:24,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:49:24,397 INFO L85 PathProgramCache]: Analyzing trace with hash 343707370, now seen corresponding path program 1 times [2024-11-03 13:49:24,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:49:24,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112559446] [2024-11-03 13:49:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:49:24,398 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:49:24,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:24,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:49:24,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:49:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:49:24,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:49:24,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:49:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 13:49:24,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:49:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 13:49:24,688 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:49:24,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112559446] [2024-11-03 13:49:24,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2112559446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:49:24,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:49:24,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 13:49:24,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655476807] [2024-11-03 13:49:24,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:49:24,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:49:24,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:49:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:49:24,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:49:24,695 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:49:24,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:49:24,845 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2024-11-03 13:49:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:49:24,847 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 34 [2024-11-03 13:49:24,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:49:24,848 INFO L225 Difference]: With dead ends: 57 [2024-11-03 13:49:24,848 INFO L226 Difference]: Without dead ends: 53 [2024-11-03 13:49:24,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:49:24,852 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:49:24,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 115 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:49:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-03 13:49:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-03 13:49:24,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 13:49:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2024-11-03 13:49:24,873 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 34 [2024-11-03 13:49:24,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:49:24,874 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2024-11-03 13:49:24,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 4 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-03 13:49:24,875 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2024-11-03 13:49:24,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-03 13:49:24,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:49:24,878 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-03 13:49:24,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:49:25,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:25,079 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:49:25,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:49:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash 611428490, now seen corresponding path program 2 times [2024-11-03 13:49:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:49:25,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63287369] [2024-11-03 13:49:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:49:25,080 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:49:25,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:25,082 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:49:25,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:49:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:49:25,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:49:25,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:49:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 13:49:25,336 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:49:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-03 13:49:25,629 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:49:25,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63287369] [2024-11-03 13:49:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [63287369] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:49:25,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:49:25,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 13:49:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076632192] [2024-11-03 13:49:25,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:49:25,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 13:49:25,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:49:25,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 13:49:25,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-03 13:49:25,632 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 12 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-03 13:49:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:49:26,103 INFO L93 Difference]: Finished difference Result 113 states and 175 transitions. [2024-11-03 13:49:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 13:49:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 12 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) Word has length 90 [2024-11-03 13:49:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:49:26,108 INFO L225 Difference]: With dead ends: 113 [2024-11-03 13:49:26,108 INFO L226 Difference]: Without dead ends: 109 [2024-11-03 13:49:26,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2024-11-03 13:49:26,111 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 186 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:49:26,112 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 522 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:49:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-03 13:49:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-03 13:49:26,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 79 states have (on average 1.3670886075949367) internal successors, (108), 79 states have internal predecessors, (108), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-03 13:49:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 164 transitions. [2024-11-03 13:49:26,141 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 164 transitions. Word has length 90 [2024-11-03 13:49:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:49:26,141 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 164 transitions. [2024-11-03 13:49:26,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 12 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 12 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-03 13:49:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 164 transitions. [2024-11-03 13:49:26,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-11-03 13:49:26,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:49:26,149 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-03 13:49:26,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:49:26,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:26,350 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:49:26,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:49:26,351 INFO L85 PathProgramCache]: Analyzing trace with hash 187677642, now seen corresponding path program 3 times [2024-11-03 13:49:26,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:49:26,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156975436] [2024-11-03 13:49:26,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:49:26,351 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:49:26,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:26,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:49:26,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:49:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:49:26,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 13:49:26,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:49:26,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 13:49:26,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:49:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2072 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-11-03 13:49:27,547 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:49:27,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156975436] [2024-11-03 13:49:27,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [156975436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:49:27,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:49:27,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-11-03 13:49:27,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334300594] [2024-11-03 13:49:27,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:49:27,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-03 13:49:27,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:49:27,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-03 13:49:27,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2024-11-03 13:49:27,558 INFO L87 Difference]: Start difference. First operand 109 states and 164 transitions. Second operand has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 28 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 28 states have call predecessors, (56), 28 states have call successors, (56) [2024-11-03 13:49:29,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:49:29,681 INFO L93 Difference]: Finished difference Result 225 states and 359 transitions. [2024-11-03 13:49:29,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-03 13:49:29,682 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 28 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 28 states have call predecessors, (56), 28 states have call successors, (56) Word has length 202 [2024-11-03 13:49:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:49:29,685 INFO L225 Difference]: With dead ends: 225 [2024-11-03 13:49:29,685 INFO L226 Difference]: Without dead ends: 221 [2024-11-03 13:49:29,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 13:49:29,687 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 777 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 13:49:29,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1893 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 13:49:29,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-03 13:49:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-11-03 13:49:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 159 states have (on average 1.3836477987421383) internal successors, (220), 159 states have internal predecessors, (220), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-03 13:49:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 340 transitions. [2024-11-03 13:49:29,712 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 340 transitions. Word has length 202 [2024-11-03 13:49:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:49:29,713 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 340 transitions. [2024-11-03 13:49:29,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.84375) internal successors, (123), 32 states have internal predecessors, (123), 28 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 28 states have call predecessors, (56), 28 states have call successors, (56) [2024-11-03 13:49:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 340 transitions. [2024-11-03 13:49:29,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2024-11-03 13:49:29,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:49:29,721 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 60, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2024-11-03 13:49:29,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Forceful destruction successful, exit code 0 [2024-11-03 13:49:29,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:29,922 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:49:29,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:49:29,922 INFO L85 PathProgramCache]: Analyzing trace with hash -646225334, now seen corresponding path program 4 times [2024-11-03 13:49:29,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:49:29,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126411410] [2024-11-03 13:49:29,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:49:29,923 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:49:29,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:29,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:49:29,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:49:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:49:30,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-03 13:49:30,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:49:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-03 13:49:30,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:49:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9720 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-11-03 13:49:32,864 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:49:32,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126411410] [2024-11-03 13:49:32,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1126411410] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:49:32,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:49:32,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2024-11-03 13:49:32,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880769953] [2024-11-03 13:49:32,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:49:32,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-03 13:49:32,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:49:32,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-03 13:49:32,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2024-11-03 13:49:32,870 INFO L87 Difference]: Start difference. First operand 221 states and 340 transitions. Second operand has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 60 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 60 states have call predecessors, (120), 60 states have call successors, (120) [2024-11-03 13:49:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:49:43,114 INFO L93 Difference]: Finished difference Result 449 states and 727 transitions. [2024-11-03 13:49:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-03 13:49:43,114 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 60 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 60 states have call predecessors, (120), 60 states have call successors, (120) Word has length 426 [2024-11-03 13:49:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:49:43,119 INFO L225 Difference]: With dead ends: 449 [2024-11-03 13:49:43,119 INFO L226 Difference]: Without dead ends: 445 [2024-11-03 13:49:43,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 880 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=3006, Invalid=5736, Unknown=0, NotChecked=0, Total=8742 [2024-11-03 13:49:43,122 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 2994 mSDsluCounter, 7008 mSDsCounter, 0 mSdLazyCounter, 3966 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2998 SdHoareTripleChecker+Valid, 7296 SdHoareTripleChecker+Invalid, 4030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-03 13:49:43,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2998 Valid, 7296 Invalid, 4030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3966 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-03 13:49:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-03 13:49:43,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2024-11-03 13:49:43,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 319 states have (on average 1.3918495297805642) internal successors, (444), 319 states have internal predecessors, (444), 124 states have call successors, (124), 1 states have call predecessors, (124), 1 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-03 13:49:43,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 692 transitions. [2024-11-03 13:49:43,169 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 692 transitions. Word has length 426 [2024-11-03 13:49:43,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:49:43,170 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 692 transitions. [2024-11-03 13:49:43,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.921875) internal successors, (251), 64 states have internal predecessors, (251), 60 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 60 states have call predecessors, (120), 60 states have call successors, (120) [2024-11-03 13:49:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 692 transitions. [2024-11-03 13:49:43,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2024-11-03 13:49:43,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:49:43,192 INFO L215 NwaCegarLoop]: trace histogram [124, 124, 124, 62, 62, 62, 62, 62, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2024-11-03 13:49:43,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:49:43,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:43,394 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:49:43,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:49:43,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1521438902, now seen corresponding path program 5 times [2024-11-03 13:49:43,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:49:43,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021251503] [2024-11-03 13:49:43,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:49:43,395 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:49:43,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:49:43,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:49:43,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:49:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:49:43,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-03 13:49:43,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:49:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2024-11-03 13:49:45,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:49:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 41912 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 30504 trivial. 0 not checked. [2024-11-03 13:49:52,788 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:49:52,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021251503] [2024-11-03 13:49:52,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2021251503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:49:52,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:49:52,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 128 [2024-11-03 13:49:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002691590] [2024-11-03 13:49:52,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:49:52,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-03 13:49:52,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:49:52,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-03 13:49:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4222, Invalid=12034, Unknown=0, NotChecked=0, Total=16256 [2024-11-03 13:49:52,803 INFO L87 Difference]: Start difference. First operand 445 states and 692 transitions. Second operand has 128 states, 128 states have (on average 3.9609375) internal successors, (507), 128 states have internal predecessors, (507), 124 states have call successors, (248), 1 states have call predecessors, (248), 1 states have return successors, (248), 124 states have call predecessors, (248), 124 states have call successors, (248)