/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/zonotope_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:51:25,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:51:25,787 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 13:51:25,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:51:25,793 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:51:25,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:51:25,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:51:25,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:51:25,826 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:51:25,829 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:51:25,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:51:25,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:51:25,830 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:51:25,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:51:25,830 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:51:25,830 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:51:25,831 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:51:25,831 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:51:25,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:51:25,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:51:25,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:51:25,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:51:25,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:51:25,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:51:25,835 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:51:25,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:51:25,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:51:25,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:51:25,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:51:25,836 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:51:25,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:51:25,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:51:25,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:51:25,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:51:25,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:51:25,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:51:25,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:51:25,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:51:25,838 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:51:25,838 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:51:25,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:51:25,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:51:25,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:51:25,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:51:25,840 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:51:26,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:51:26,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:51:26,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:51:26,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:51:26,100 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:51:26,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/zonotope_3.c [2024-11-03 13:51:27,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:51:27,670 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:51:27,670 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/zonotope_3.c [2024-11-03 13:51:27,679 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d431cb81e/bb8312329fd746f3b41ad660a351e2bc/FLAGfdec40095 [2024-11-03 13:51:27,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d431cb81e/bb8312329fd746f3b41ad660a351e2bc [2024-11-03 13:51:27,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:51:27,700 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:51:27,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:51:27,703 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:51:27,709 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:51:27,710 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:27,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673004fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27, skipping insertion in model container [2024-11-03 13:51:27,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:27,731 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:51:27,886 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/zonotope_3.c[604,617] [2024-11-03 13:51:27,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:51:27,911 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:51:27,921 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/zonotope_3.c[604,617] [2024-11-03 13:51:27,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:51:27,942 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:51:27,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27 WrapperNode [2024-11-03 13:51:27,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:51:27,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:51:27,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:51:27,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:51:27,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:27,959 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:27,973 INFO L138 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-11-03 13:51:27,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:51:27,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:51:27,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:51:27,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:51:27,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:27,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:27,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:27,996 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 13:51:27,997 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:27,997 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:28,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:28,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:28,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:28,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:28,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:51:28,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:51:28,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:51:28,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:51:28,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (1/1) ... [2024-11-03 13:51:28,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:51:28,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:51:28,047 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 13:51:28,049 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 13:51:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:51:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-03 13:51:28,067 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-03 13:51:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-11-03 13:51:28,067 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-11-03 13:51:28,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:51:28,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:51:28,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:51:28,146 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:51:28,152 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:51:28,998 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-03 13:51:28,999 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:51:29,009 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:51:29,010 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:51:29,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:29 BoogieIcfgContainer [2024-11-03 13:51:29,010 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:51:29,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:51:29,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:51:29,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:51:29,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:51:27" (1/3) ... [2024-11-03 13:51:29,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e24986a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:29, skipping insertion in model container [2024-11-03 13:51:29,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:27" (2/3) ... [2024-11-03 13:51:29,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e24986a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:29, skipping insertion in model container [2024-11-03 13:51:29,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:29" (3/3) ... [2024-11-03 13:51:29,018 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2024-11-03 13:51:29,032 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:51:29,032 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:51:29,072 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:51:29,079 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;@50653f77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:51:29,079 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:51:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 13:51:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-03 13:51:29,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:51:29,093 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:51:29,093 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:51:29,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:51:29,098 INFO L85 PathProgramCache]: Analyzing trace with hash -791121696, now seen corresponding path program 1 times [2024-11-03 13:51:29,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:51:29,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89912175] [2024-11-03 13:51:29,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:51:29,109 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:51:29,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:51:29,111 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 13:51:29,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:51:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:51:29,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:51:29,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:51:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:51:29,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:51:29,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-03 13:51:29,289 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:51:29,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89912175] [2024-11-03 13:51:29,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [89912175] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:51:29,290 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:51:29,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:51:29,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542619562] [2024-11-03 13:51:29,292 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:51:29,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:51:29,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:51:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:51:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:51:29,318 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 13:51:30,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:51:30,150 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2024-11-03 13:51:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:51:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2024-11-03 13:51:30,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:51:30,158 INFO L225 Difference]: With dead ends: 75 [2024-11-03 13:51:30,158 INFO L226 Difference]: Without dead ends: 45 [2024-11-03 13:51:30,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 48 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 13:51:30,163 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 13:51:30,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 72 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 13:51:30,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-03 13:51:30,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-03 13:51:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-03 13:51:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-03 13:51:30,199 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 26 [2024-11-03 13:51:30,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:51:30,201 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-03 13:51:30,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-03 13:51:30,201 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-03 13:51:30,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 13:51:30,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:51:30,206 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:51:30,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Forceful destruction successful, exit code 0 [2024-11-03 13:51:30,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:51:30,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:51:30,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:51:30,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1297373878, now seen corresponding path program 1 times [2024-11-03 13:51:30,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:51:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152158674] [2024-11-03 13:51:30,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:51:30,411 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:51:30,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:51:30,413 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 13:51:30,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:51:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:51:30,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-03 13:51:30,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:51:30,712 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-03 13:51:30,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:51:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-03 13:51:30,999 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:51:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152158674] [2024-11-03 13:51:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1152158674] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:51:30,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:51:30,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-03 13:51:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235451075] [2024-11-03 13:51:31,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:51:31,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 13:51:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:51:31,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 13:51:31,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-03 13:51:31,003 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-03 13:51:34,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:51:34,056 INFO L93 Difference]: Finished difference Result 97 states and 126 transitions. [2024-11-03 13:51:34,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:51:34,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 74 [2024-11-03 13:51:34,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:51:34,071 INFO L225 Difference]: With dead ends: 97 [2024-11-03 13:51:34,071 INFO L226 Difference]: Without dead ends: 93 [2024-11-03 13:51:34,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 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 13:51:34,073 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 35 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:51:34,073 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 236 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-03 13:51:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-03 13:51:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-03 13:51:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 62 states have (on average 1.0161290322580645) internal successors, (63), 62 states have internal predecessors, (63), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-03 13:51:34,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 119 transitions. [2024-11-03 13:51:34,102 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 119 transitions. Word has length 74 [2024-11-03 13:51:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:51:34,104 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 119 transitions. [2024-11-03 13:51:34,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2024-11-03 13:51:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 119 transitions. [2024-11-03 13:51:34,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-03 13:51:34,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:51:34,111 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:51:34,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Forceful destruction successful, exit code 0 [2024-11-03 13:51:34,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:51:34,312 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:51:34,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:51:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1141480862, now seen corresponding path program 2 times [2024-11-03 13:51:34,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:51:34,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330217986] [2024-11-03 13:51:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:51:34,314 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:51:34,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:51:34,315 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 13:51:34,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:51:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:51:34,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-03 13:51:34,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:51:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2024-11-03 13:51:34,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:51:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 0 proven. 186 refuted. 0 times theorem prover too weak. 546 trivial. 0 not checked. [2024-11-03 13:51:35,476 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:51:35,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330217986] [2024-11-03 13:51:35,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1330217986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:51:35,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:51:35,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-03 13:51:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746790017] [2024-11-03 13:51:35,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:51:35,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-03 13:51:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:51:35,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-03 13:51:35,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-03 13:51:35,480 INFO L87 Difference]: Start difference. First operand 93 states and 119 transitions. Second operand has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 13 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) [2024-11-03 13:51:41,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:51:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:51:44,806 INFO L93 Difference]: Finished difference Result 193 states and 258 transitions. [2024-11-03 13:51:44,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 13:51:44,817 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 13 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) Word has length 170 [2024-11-03 13:51:44,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:51:44,820 INFO L225 Difference]: With dead ends: 193 [2024-11-03 13:51:44,820 INFO L226 Difference]: Without dead ends: 189 [2024-11-03 13:51:44,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2024-11-03 13:51:44,822 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 56 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:51:44,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 737 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-03 13:51:44,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-03 13:51:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-03 13:51:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 126 states have (on average 1.007936507936508) internal successors, (127), 126 states have internal predecessors, (127), 60 states have call successors, (60), 2 states have call predecessors, (60), 2 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-03 13:51:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 247 transitions. [2024-11-03 13:51:44,856 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 247 transitions. Word has length 170 [2024-11-03 13:51:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:51:44,857 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 247 transitions. [2024-11-03 13:51:44,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.0) internal successors, (112), 16 states have internal predecessors, (112), 13 states have call successors, (52), 1 states have call predecessors, (52), 1 states have return successors, (52), 13 states have call predecessors, (52), 13 states have call successors, (52) [2024-11-03 13:51:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 247 transitions. [2024-11-03 13:51:44,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2024-11-03 13:51:44,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:51:44,870 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:51:44,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:51:45,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:51:45,071 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:51:45,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:51:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1367129670, now seen corresponding path program 3 times [2024-11-03 13:51:45,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:51:45,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770408688] [2024-11-03 13:51:45,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:51:45,072 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:51:45,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:51:45,074 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 13:51:45,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:51:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:51:45,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-03 13:51:45,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:51:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3716 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2024-11-03 13:51:45,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:51:47,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3716 backedges. 0 proven. 1106 refuted. 0 times theorem prover too weak. 2610 trivial. 0 not checked. [2024-11-03 13:51:47,079 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:51:47,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770408688] [2024-11-03 13:51:47,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1770408688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:51:47,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:51:47,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2024-11-03 13:51:47,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334076555] [2024-11-03 13:51:47,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:51:47,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-03 13:51:47,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:51:47,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-03 13:51:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2024-11-03 13:51:47,084 INFO L87 Difference]: Start difference. First operand 189 states and 247 transitions. Second operand has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 29 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 29 states have call predecessors, (116), 29 states have call successors, (116) [2024-11-03 13:52:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:52:09,885 INFO L93 Difference]: Finished difference Result 385 states and 522 transitions. [2024-11-03 13:52:09,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-03 13:52:09,898 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 29 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 29 states have call predecessors, (116), 29 states have call successors, (116) Word has length 362 [2024-11-03 13:52:09,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:52:09,904 INFO L225 Difference]: With dead ends: 385 [2024-11-03 13:52:09,904 INFO L226 Difference]: Without dead ends: 381 [2024-11-03 13:52:09,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 13:52:09,906 INFO L432 NwaCegarLoop]: 232 mSDtfsCounter, 119 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2919 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2024-11-03 13:52:09,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2919 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1424 Invalid, 0 Unknown, 0 Unchecked, 20.7s Time] [2024-11-03 13:52:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-03 13:52:09,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-03 13:52:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 254 states have (on average 1.0039370078740157) internal successors, (255), 254 states have internal predecessors, (255), 124 states have call successors, (124), 2 states have call predecessors, (124), 2 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-03 13:52:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 503 transitions. [2024-11-03 13:52:09,957 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 503 transitions. Word has length 362 [2024-11-03 13:52:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:52:09,960 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 503 transitions. [2024-11-03 13:52:09,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 7.5) internal successors, (240), 32 states have internal predecessors, (240), 29 states have call successors, (116), 1 states have call predecessors, (116), 1 states have return successors, (116), 29 states have call predecessors, (116), 29 states have call successors, (116) [2024-11-03 13:52:09,961 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 503 transitions. [2024-11-03 13:52:09,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2024-11-03 13:52:09,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:52:09,981 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:52:09,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:52:10,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:52:10,182 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:52:10,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:52:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1572880490, now seen corresponding path program 4 times [2024-11-03 13:52:10,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:52:10,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667249594] [2024-11-03 13:52:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:52:10,184 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:52:10,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:52:10,186 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 13:52:10,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:52:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:52:10,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-03 13:52:10,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:52:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16596 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 11346 trivial. 0 not checked. [2024-11-03 13:52:12,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:52:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 16596 backedges. 0 proven. 5250 refuted. 0 times theorem prover too weak. 11346 trivial. 0 not checked. [2024-11-03 13:52:15,541 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:52:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667249594] [2024-11-03 13:52:15,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [667249594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:52:15,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:52:15,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2024-11-03 13:52:15,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979440008] [2024-11-03 13:52:15,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:52:15,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-03 13:52:15,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:52:15,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-03 13:52:15,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1086, Invalid=2946, Unknown=0, NotChecked=0, Total=4032 [2024-11-03 13:52:15,548 INFO L87 Difference]: Start difference. First operand 381 states and 503 transitions. Second operand has 64 states, 64 states have (on average 7.75) internal successors, (496), 64 states have internal predecessors, (496), 61 states have call successors, (244), 1 states have call predecessors, (244), 1 states have return successors, (244), 61 states have call predecessors, (244), 61 states have call successors, (244) [2024-11-03 13:52:54,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:53:01,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 13:53:06,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []