/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/bitvector/s3_srvr_2a_alt.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 13:37:16,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 13:37:17,049 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 13:37:17,053 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 13:37:17,053 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 13:37:17,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 13:37:17,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 13:37:17,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 13:37:17,086 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 13:37:17,088 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 13:37:17,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 13:37:17,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 13:37:17,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 13:37:17,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 13:37:17,092 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 13:37:17,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 13:37:17,092 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 13:37:17,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 13:37:17,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 13:37:17,093 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 13:37:17,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 13:37:17,096 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 13:37:17,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 13:37:17,097 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 13:37:17,097 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 13:37:17,097 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 13:37:17,098 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 13:37:17,098 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 13:37:17,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 13:37:17,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 13:37:17,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 13:37:17,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 13:37:17,099 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 13:37:17,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 13:37:17,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:37:17,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 13:37:17,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 13:37:17,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 13:37:17,100 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 13:37:17,101 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 13:37:17,101 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 13:37:17,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 13:37:17,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 13:37:17,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 13:37:17,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> bitwuzla [2024-11-03 13:37:17,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 13:37:17,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 13:37:17,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 13:37:17,359 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 13:37:17,359 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 13:37:17,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_srvr_2a_alt.BV.c.cil.c [2024-11-03 13:37:18,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 13:37:18,970 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 13:37:18,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_srvr_2a_alt.BV.c.cil.c [2024-11-03 13:37:18,984 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da6af3dbe/3cfa5d32c6ad48679b0e1557be768a8e/FLAG94d071434 [2024-11-03 13:37:19,334 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da6af3dbe/3cfa5d32c6ad48679b0e1557be768a8e [2024-11-03 13:37:19,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 13:37:19,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 13:37:19,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 13:37:19,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 13:37:19,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 13:37:19,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9e691d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19, skipping insertion in model container [2024-11-03 13:37:19,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,387 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 13:37:19,610 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_srvr_2a_alt.BV.c.cil.c[44811,44824] [2024-11-03 13:37:19,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:37:19,634 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 13:37:19,680 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_srvr_2a_alt.BV.c.cil.c[44811,44824] [2024-11-03 13:37:19,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 13:37:19,699 INFO L204 MainTranslator]: Completed translation [2024-11-03 13:37:19,699 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19 WrapperNode [2024-11-03 13:37:19,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 13:37:19,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 13:37:19,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 13:37:19,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 13:37:19,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,747 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 526 [2024-11-03 13:37:19,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 13:37:19,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 13:37:19,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 13:37:19,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 13:37:19,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,758 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,781 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 13:37:19,781 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,781 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,795 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,799 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 13:37:19,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 13:37:19,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 13:37:19,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 13:37:19,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (1/1) ... [2024-11-03 13:37:19,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 13:37:19,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 13:37:19,837 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 13:37:19,838 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 13:37:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 13:37:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 13:37:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 13:37:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 13:37:19,943 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 13:37:19,945 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 13:37:19,958 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-03 13:37:20,455 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2024-11-03 13:37:20,456 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2024-11-03 13:37:20,517 INFO L? ?]: Removed 118 outVars from TransFormulas that were not future-live. [2024-11-03 13:37:20,517 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 13:37:20,535 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 13:37:20,535 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 13:37:20,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:20 BoogieIcfgContainer [2024-11-03 13:37:20,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 13:37:20,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 13:37:20,538 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 13:37:20,541 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 13:37:20,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:37:19" (1/3) ... [2024-11-03 13:37:20,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59376b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:20, skipping insertion in model container [2024-11-03 13:37:20,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:19" (2/3) ... [2024-11-03 13:37:20,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59376b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:20, skipping insertion in model container [2024-11-03 13:37:20,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:20" (3/3) ... [2024-11-03 13:37:20,543 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_2a_alt.BV.c.cil.c [2024-11-03 13:37:20,559 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 13:37:20,559 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 13:37:20,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 13:37:20,612 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;@5bf043d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 13:37:20,612 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 13:37:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 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 13:37:20,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 13:37:20,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:20,628 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:20,629 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:20,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:20,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1632002022, now seen corresponding path program 1 times [2024-11-03 13:37:20,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:20,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234990651] [2024-11-03 13:37:20,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:20,646 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:20,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:20,649 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 13:37:20,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Waiting until timeout for monitored process [2024-11-03 13:37:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:20,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 13:37:20,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:20,839 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 13:37:20,840 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:20,885 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 13:37:20,887 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:20,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234990651] [2024-11-03 13:37:20,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1234990651] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:20,888 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:20,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:20,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286324971] [2024-11-03 13:37:20,890 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:20,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:20,925 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7426470588235294) internal successors, (237), 137 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 13:37:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:21,150 INFO L93 Difference]: Finished difference Result 275 states and 473 transitions. [2024-11-03 13:37:21,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:21,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2024-11-03 13:37:21,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:21,162 INFO L225 Difference]: With dead ends: 275 [2024-11-03 13:37:21,163 INFO L226 Difference]: Without dead ends: 125 [2024-11-03 13:37:21,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:21,170 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 8 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:21,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 325 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-03 13:37:21,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-03 13:37:21,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4919354838709677) internal successors, (185), 124 states have internal predecessors, (185), 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 13:37:21,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 185 transitions. [2024-11-03 13:37:21,220 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 185 transitions. Word has length 44 [2024-11-03 13:37:21,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:21,221 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 185 transitions. [2024-11-03 13:37:21,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 13:37:21,221 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 185 transitions. [2024-11-03 13:37:21,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-03 13:37:21,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:21,223 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:21,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (2)] Ended with exit code 0 [2024-11-03 13:37:21,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:21,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:21,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:21,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2033157093, now seen corresponding path program 1 times [2024-11-03 13:37:21,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:21,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060969885] [2024-11-03 13:37:21,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:21,426 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:21,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:21,428 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 13:37:21,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Waiting until timeout for monitored process [2024-11-03 13:37:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:21,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:21,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:37:21,564 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-03 13:37:21,643 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:21,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060969885] [2024-11-03 13:37:21,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2060969885] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:21,643 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:21,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:21,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982464715] [2024-11-03 13:37:21,644 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:21,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:21,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:21,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:21,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:21,647 INFO L87 Difference]: Start difference. First operand 125 states and 185 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 13:37:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:21,712 INFO L93 Difference]: Finished difference Result 432 states and 659 transitions. [2024-11-03 13:37:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 60 [2024-11-03 13:37:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:21,715 INFO L225 Difference]: With dead ends: 432 [2024-11-03 13:37:21,716 INFO L226 Difference]: Without dead ends: 326 [2024-11-03 13:37:21,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 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 13:37:21,717 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 346 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:21,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 487 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-03 13:37:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2024-11-03 13:37:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 1.5138461538461538) internal successors, (492), 325 states have internal predecessors, (492), 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 13:37:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 492 transitions. [2024-11-03 13:37:21,739 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 492 transitions. Word has length 60 [2024-11-03 13:37:21,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:21,740 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 492 transitions. [2024-11-03 13:37:21,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 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 13:37:21,740 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 492 transitions. [2024-11-03 13:37:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-03 13:37:21,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:21,746 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:21,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (3)] Ended with exit code 0 [2024-11-03 13:37:21,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:21,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:21,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1976048908, now seen corresponding path program 1 times [2024-11-03 13:37:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:21,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021537203] [2024-11-03 13:37:21,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:21,949 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:21,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:21,951 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 13:37:21,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Waiting until timeout for monitored process [2024-11-03 13:37:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:22,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:22,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:37:22,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 13:37:22,091 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:22,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021537203] [2024-11-03 13:37:22,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2021537203] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:22,091 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:22,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568606775] [2024-11-03 13:37:22,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:22,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:22,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:22,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:22,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:22,095 INFO L87 Difference]: Start difference. First operand 326 states and 492 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 13:37:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:22,116 INFO L93 Difference]: Finished difference Result 635 states and 964 transitions. [2024-11-03 13:37:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:22,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 82 [2024-11-03 13:37:22,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:22,120 INFO L225 Difference]: With dead ends: 635 [2024-11-03 13:37:22,120 INFO L226 Difference]: Without dead ends: 328 [2024-11-03 13:37:22,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:22,125 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 6 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:22,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 326 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:22,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-03 13:37:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-11-03 13:37:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.510703363914373) internal successors, (494), 327 states have internal predecessors, (494), 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 13:37:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 494 transitions. [2024-11-03 13:37:22,150 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 494 transitions. Word has length 82 [2024-11-03 13:37:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:22,150 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 494 transitions. [2024-11-03 13:37:22,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 13:37:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 494 transitions. [2024-11-03 13:37:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-03 13:37:22,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:22,155 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:22,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (4)] Ended with exit code 0 [2024-11-03 13:37:22,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:22,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:22,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1614320406, now seen corresponding path program 1 times [2024-11-03 13:37:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:22,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599786731] [2024-11-03 13:37:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:22,357 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:22,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:22,360 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 13:37:22,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Waiting until timeout for monitored process [2024-11-03 13:37:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:22,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:22,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:22,492 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 13:37:22,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:22,538 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 13:37:22,538 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:22,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599786731] [2024-11-03 13:37:22,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1599786731] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:22,539 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:22,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063166493] [2024-11-03 13:37:22,542 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:22,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:22,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:22,544 INFO L87 Difference]: Start difference. First operand 328 states and 494 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 13:37:22,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:22,806 INFO L93 Difference]: Finished difference Result 823 states and 1280 transitions. [2024-11-03 13:37:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:22,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 103 [2024-11-03 13:37:22,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:22,809 INFO L225 Difference]: With dead ends: 823 [2024-11-03 13:37:22,809 INFO L226 Difference]: Without dead ends: 516 [2024-11-03 13:37:22,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 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 13:37:22,811 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 74 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:22,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 310 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-03 13:37:22,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 516. [2024-11-03 13:37:22,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.4174757281553398) internal successors, (730), 515 states have internal predecessors, (730), 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 13:37:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 730 transitions. [2024-11-03 13:37:22,830 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 730 transitions. Word has length 103 [2024-11-03 13:37:22,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:22,831 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 730 transitions. [2024-11-03 13:37:22,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 13:37:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 730 transitions. [2024-11-03 13:37:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-03 13:37:22,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:22,835 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:22,841 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (5)] Ended with exit code 0 [2024-11-03 13:37:23,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:23,036 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:23,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:23,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2020105131, now seen corresponding path program 1 times [2024-11-03 13:37:23,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:23,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743364962] [2024-11-03 13:37:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:23,038 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:23,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:23,040 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 13:37:23,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Waiting until timeout for monitored process [2024-11-03 13:37:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:23,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:23,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:23,162 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 13:37:23,162 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 13:37:23,194 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:23,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743364962] [2024-11-03 13:37:23,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1743364962] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:23,195 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:23,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758867409] [2024-11-03 13:37:23,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:23,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:23,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:23,196 INFO L87 Difference]: Start difference. First operand 516 states and 730 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 13:37:23,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:23,372 INFO L93 Difference]: Finished difference Result 1123 states and 1612 transitions. [2024-11-03 13:37:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:23,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 104 [2024-11-03 13:37:23,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:23,374 INFO L225 Difference]: With dead ends: 1123 [2024-11-03 13:37:23,375 INFO L226 Difference]: Without dead ends: 628 [2024-11-03 13:37:23,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 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 13:37:23,376 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 55 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:23,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 280 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-03 13:37:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2024-11-03 13:37:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 1.4162679425837321) internal successors, (888), 627 states have internal predecessors, (888), 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 13:37:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 888 transitions. [2024-11-03 13:37:23,390 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 888 transitions. Word has length 104 [2024-11-03 13:37:23,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:23,390 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 888 transitions. [2024-11-03 13:37:23,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 13:37:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 888 transitions. [2024-11-03 13:37:23,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-03 13:37:23,394 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:23,394 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:23,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (6)] Ended with exit code 0 [2024-11-03 13:37:23,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:23,595 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:23,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:23,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1728047681, now seen corresponding path program 1 times [2024-11-03 13:37:23,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:23,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889405734] [2024-11-03 13:37:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:23,596 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:23,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:23,597 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 13:37:23,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Waiting until timeout for monitored process [2024-11-03 13:37:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:23,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:23,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-03 13:37:23,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-03 13:37:23,717 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:23,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889405734] [2024-11-03 13:37:23,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1889405734] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:23,717 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:23,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:23,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344468212] [2024-11-03 13:37:23,718 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:23,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:23,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:23,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:23,719 INFO L87 Difference]: Start difference. First operand 628 states and 888 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 13:37:23,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:23,916 INFO L93 Difference]: Finished difference Result 1310 states and 1868 transitions. [2024-11-03 13:37:23,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:23,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 159 [2024-11-03 13:37:23,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:23,919 INFO L225 Difference]: With dead ends: 1310 [2024-11-03 13:37:23,919 INFO L226 Difference]: Without dead ends: 703 [2024-11-03 13:37:23,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 314 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 13:37:23,921 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 55 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:23,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 326 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:23,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-03 13:37:23,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2024-11-03 13:37:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.3888888888888888) internal successors, (975), 702 states have internal predecessors, (975), 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 13:37:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 975 transitions. [2024-11-03 13:37:23,935 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 975 transitions. Word has length 159 [2024-11-03 13:37:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:23,936 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 975 transitions. [2024-11-03 13:37:23,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 13:37:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 975 transitions. [2024-11-03 13:37:23,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-03 13:37:23,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:23,938 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1] [2024-11-03 13:37:23,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (7)] Ended with exit code 0 [2024-11-03 13:37:24,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:24,143 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:24,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash -546671195, now seen corresponding path program 1 times [2024-11-03 13:37:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:24,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731064921] [2024-11-03 13:37:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:24,144 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:24,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:24,145 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:24,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Waiting until timeout for monitored process [2024-11-03 13:37:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:24,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:24,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-03 13:37:24,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-03 13:37:24,280 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:24,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731064921] [2024-11-03 13:37:24,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1731064921] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:24,280 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:24,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:24,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10351158] [2024-11-03 13:37:24,281 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:24,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:24,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:24,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:24,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:24,282 INFO L87 Difference]: Start difference. First operand 703 states and 975 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 13:37:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:24,498 INFO L93 Difference]: Finished difference Result 1511 states and 2141 transitions. [2024-11-03 13:37:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:24,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 200 [2024-11-03 13:37:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:24,502 INFO L225 Difference]: With dead ends: 1511 [2024-11-03 13:37:24,502 INFO L226 Difference]: Without dead ends: 829 [2024-11-03 13:37:24,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 396 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 13:37:24,504 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 80 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:24,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 278 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:24,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2024-11-03 13:37:24,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2024-11-03 13:37:24,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 828 states have (on average 1.3405797101449275) internal successors, (1110), 828 states have internal predecessors, (1110), 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 13:37:24,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1110 transitions. [2024-11-03 13:37:24,523 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1110 transitions. Word has length 200 [2024-11-03 13:37:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:24,524 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 1110 transitions. [2024-11-03 13:37:24,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 13:37:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1110 transitions. [2024-11-03 13:37:24,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-03 13:37:24,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:24,526 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:24,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (8)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:24,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:24,727 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:24,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1371194429, now seen corresponding path program 1 times [2024-11-03 13:37:24,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:24,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198279845] [2024-11-03 13:37:24,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:24,728 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:24,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:24,730 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:24,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Waiting until timeout for monitored process [2024-11-03 13:37:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:24,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:24,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-03 13:37:24,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-03 13:37:24,866 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198279845] [2024-11-03 13:37:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [198279845] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:24,866 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:24,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:24,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746876361] [2024-11-03 13:37:24,866 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:24,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:24,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:24,868 INFO L87 Difference]: Start difference. First operand 829 states and 1110 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 13:37:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:25,042 INFO L93 Difference]: Finished difference Result 1778 states and 2405 transitions. [2024-11-03 13:37:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:25,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 207 [2024-11-03 13:37:25,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:25,046 INFO L225 Difference]: With dead ends: 1778 [2024-11-03 13:37:25,048 INFO L226 Difference]: Without dead ends: 970 [2024-11-03 13:37:25,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 410 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 13:37:25,051 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 63 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:25,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 238 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2024-11-03 13:37:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2024-11-03 13:37:25,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 969 states have (on average 1.3312693498452013) internal successors, (1290), 969 states have internal predecessors, (1290), 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 13:37:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1290 transitions. [2024-11-03 13:37:25,078 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1290 transitions. Word has length 207 [2024-11-03 13:37:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:25,079 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1290 transitions. [2024-11-03 13:37:25,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 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 13:37:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1290 transitions. [2024-11-03 13:37:25,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-03 13:37:25,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:25,083 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:25,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (9)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:25,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:25,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:25,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash -328856853, now seen corresponding path program 1 times [2024-11-03 13:37:25,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:25,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522886283] [2024-11-03 13:37:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:25,286 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:25,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:25,287 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:25,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Waiting until timeout for monitored process [2024-11-03 13:37:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:25,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:25,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-03 13:37:25,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2024-11-03 13:37:25,437 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522886283] [2024-11-03 13:37:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [522886283] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:25,437 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:25,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187476980] [2024-11-03 13:37:25,437 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:25,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:25,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:25,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:25,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:25,438 INFO L87 Difference]: Start difference. First operand 970 states and 1290 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 13:37:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:25,583 INFO L93 Difference]: Finished difference Result 2006 states and 2687 transitions. [2024-11-03 13:37:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:25,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 240 [2024-11-03 13:37:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:25,588 INFO L225 Difference]: With dead ends: 2006 [2024-11-03 13:37:25,589 INFO L226 Difference]: Without dead ends: 1057 [2024-11-03 13:37:25,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:25,591 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 9 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:25,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 272 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:25,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2024-11-03 13:37:25,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1057. [2024-11-03 13:37:25,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.3181818181818181) internal successors, (1392), 1056 states have internal predecessors, (1392), 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 13:37:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1392 transitions. [2024-11-03 13:37:25,614 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1392 transitions. Word has length 240 [2024-11-03 13:37:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:25,615 INFO L471 AbstractCegarLoop]: Abstraction has 1057 states and 1392 transitions. [2024-11-03 13:37:25,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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 13:37:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1392 transitions. [2024-11-03 13:37:25,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-03 13:37:25,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:25,618 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:25,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (10)] Ended with exit code 0 [2024-11-03 13:37:25,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:25,820 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:25,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash 557282683, now seen corresponding path program 1 times [2024-11-03 13:37:25,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:25,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695915246] [2024-11-03 13:37:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:25,821 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:25,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:25,822 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:25,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Waiting until timeout for monitored process [2024-11-03 13:37:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:25,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:25,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 425 proven. 16 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-03 13:37:25,964 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 425 proven. 16 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2024-11-03 13:37:26,035 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:26,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695915246] [2024-11-03 13:37:26,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1695915246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:26,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:26,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:37:26,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078957643] [2024-11-03 13:37:26,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:26,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:37:26,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:26,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:37:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:26,036 INFO L87 Difference]: Start difference. First operand 1057 states and 1392 transitions. Second operand has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 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 13:37:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:26,599 INFO L93 Difference]: Finished difference Result 3706 states and 4884 transitions. [2024-11-03 13:37:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:37:26,600 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 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 244 [2024-11-03 13:37:26,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:26,608 INFO L225 Difference]: With dead ends: 3706 [2024-11-03 13:37:26,608 INFO L226 Difference]: Without dead ends: 2670 [2024-11-03 13:37:26,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:37:26,611 INFO L432 NwaCegarLoop]: 319 mSDtfsCounter, 362 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:26,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 783 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 13:37:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2670 states. [2024-11-03 13:37:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2670 to 1571. [2024-11-03 13:37:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 1.3535031847133758) internal successors, (2125), 1570 states have internal predecessors, (2125), 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 13:37:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2125 transitions. [2024-11-03 13:37:26,681 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2125 transitions. Word has length 244 [2024-11-03 13:37:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:26,681 INFO L471 AbstractCegarLoop]: Abstraction has 1571 states and 2125 transitions. [2024-11-03 13:37:26,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 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 13:37:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2125 transitions. [2024-11-03 13:37:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2024-11-03 13:37:26,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:26,686 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:26,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (11)] Ended with exit code 0 [2024-11-03 13:37:26,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:26,888 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:26,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:26,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1403818874, now seen corresponding path program 1 times [2024-11-03 13:37:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696650937] [2024-11-03 13:37:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:26,889 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:26,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:26,891 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:26,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Waiting until timeout for monitored process [2024-11-03 13:37:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:26,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:26,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 434 proven. 17 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-03 13:37:27,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 434 proven. 17 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2024-11-03 13:37:27,115 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:27,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696650937] [2024-11-03 13:37:27,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1696650937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:27,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:27,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:37:27,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349839305] [2024-11-03 13:37:27,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:27,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:37:27,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:37:27,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:27,117 INFO L87 Difference]: Start difference. First operand 1571 states and 2125 transitions. Second operand has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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 13:37:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:27,835 INFO L93 Difference]: Finished difference Result 4796 states and 6468 transitions. [2024-11-03 13:37:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 13:37:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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 254 [2024-11-03 13:37:27,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:27,846 INFO L225 Difference]: With dead ends: 4796 [2024-11-03 13:37:27,847 INFO L226 Difference]: Without dead ends: 3246 [2024-11-03 13:37:27,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-03 13:37:27,850 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 327 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:27,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1065 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 13:37:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3246 states. [2024-11-03 13:37:27,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3246 to 2104. [2024-11-03 13:37:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2104 states, 2103 states have (on average 1.3285782215882074) internal successors, (2794), 2103 states have internal predecessors, (2794), 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 13:37:27,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 2794 transitions. [2024-11-03 13:37:27,916 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 2794 transitions. Word has length 254 [2024-11-03 13:37:27,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:27,916 INFO L471 AbstractCegarLoop]: Abstraction has 2104 states and 2794 transitions. [2024-11-03 13:37:27,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 states have internal predecessors, (208), 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 13:37:27,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 2794 transitions. [2024-11-03 13:37:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-03 13:37:27,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:27,921 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:27,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (12)] Ended with exit code 0 [2024-11-03 13:37:28,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:28,123 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:28,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 936243058, now seen corresponding path program 1 times [2024-11-03 13:37:28,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:28,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417068772] [2024-11-03 13:37:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:28,124 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:28,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:28,125 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:28,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Waiting until timeout for monitored process [2024-11-03 13:37:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:28,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:28,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-11-03 13:37:28,252 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-11-03 13:37:28,293 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:28,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417068772] [2024-11-03 13:37:28,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [417068772] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:28,294 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:28,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:28,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044241840] [2024-11-03 13:37:28,294 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:28,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:28,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:28,295 INFO L87 Difference]: Start difference. First operand 2104 states and 2794 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 13:37:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:28,440 INFO L93 Difference]: Finished difference Result 4276 states and 5722 transitions. [2024-11-03 13:37:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:28,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 264 [2024-11-03 13:37:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:28,447 INFO L225 Difference]: With dead ends: 4276 [2024-11-03 13:37:28,448 INFO L226 Difference]: Without dead ends: 2352 [2024-11-03 13:37:28,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:28,450 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 12 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:28,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 269 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:28,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2024-11-03 13:37:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2352. [2024-11-03 13:37:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2351 states have (on average 1.3109315185027648) internal successors, (3082), 2351 states have internal predecessors, (3082), 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 13:37:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3082 transitions. [2024-11-03 13:37:28,506 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3082 transitions. Word has length 264 [2024-11-03 13:37:28,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:28,507 INFO L471 AbstractCegarLoop]: Abstraction has 2352 states and 3082 transitions. [2024-11-03 13:37:28,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 13:37:28,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3082 transitions. [2024-11-03 13:37:28,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-11-03 13:37:28,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:28,512 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 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, 1, 1, 1, 1] [2024-11-03 13:37:28,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (13)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:28,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:28,713 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:28,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:28,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1830987648, now seen corresponding path program 1 times [2024-11-03 13:37:28,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:28,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101319637] [2024-11-03 13:37:28,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:28,714 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:28,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:28,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:28,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Waiting until timeout for monitored process [2024-11-03 13:37:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:28,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:28,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-03 13:37:28,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:29,011 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2024-11-03 13:37:29,011 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:29,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101319637] [2024-11-03 13:37:29,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1101319637] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:29,012 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:29,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:29,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344516179] [2024-11-03 13:37:29,012 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:29,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:29,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:29,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:29,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:29,015 INFO L87 Difference]: Start difference. First operand 2352 states and 3082 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 13:37:29,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:29,069 INFO L93 Difference]: Finished difference Result 5756 states and 7507 transitions. [2024-11-03 13:37:29,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:29,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 269 [2024-11-03 13:37:29,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:29,081 INFO L225 Difference]: With dead ends: 5756 [2024-11-03 13:37:29,081 INFO L226 Difference]: Without dead ends: 3584 [2024-11-03 13:37:29,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 535 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:29,084 INFO L432 NwaCegarLoop]: 325 mSDtfsCounter, 117 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:29,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 492 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2024-11-03 13:37:29,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3441. [2024-11-03 13:37:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3440 states have (on average 1.3069767441860465) internal successors, (4496), 3440 states have internal predecessors, (4496), 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 13:37:29,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 4496 transitions. [2024-11-03 13:37:29,161 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 4496 transitions. Word has length 269 [2024-11-03 13:37:29,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:29,161 INFO L471 AbstractCegarLoop]: Abstraction has 3441 states and 4496 transitions. [2024-11-03 13:37:29,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 13:37:29,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 4496 transitions. [2024-11-03 13:37:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-03 13:37:29,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:29,168 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:29,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (14)] Ended with exit code 0 [2024-11-03 13:37:29,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:29,370 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:29,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:29,370 INFO L85 PathProgramCache]: Analyzing trace with hash -10155191, now seen corresponding path program 1 times [2024-11-03 13:37:29,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:29,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513716835] [2024-11-03 13:37:29,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:29,371 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:29,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:29,372 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:29,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Waiting until timeout for monitored process [2024-11-03 13:37:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:29,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:29,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-11-03 13:37:29,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1135 backedges. 725 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2024-11-03 13:37:29,550 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:29,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513716835] [2024-11-03 13:37:29,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1513716835] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:29,550 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:29,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:29,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192497451] [2024-11-03 13:37:29,550 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:29,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:29,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:29,552 INFO L87 Difference]: Start difference. First operand 3441 states and 4496 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 13:37:29,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:29,763 INFO L93 Difference]: Finished difference Result 6628 states and 8833 transitions. [2024-11-03 13:37:29,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:29,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 338 [2024-11-03 13:37:29,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:29,773 INFO L225 Difference]: With dead ends: 6628 [2024-11-03 13:37:29,773 INFO L226 Difference]: Without dead ends: 2757 [2024-11-03 13:37:29,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 672 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 13:37:29,778 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 54 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:29,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 263 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 13:37:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2024-11-03 13:37:29,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2538. [2024-11-03 13:37:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 2537 states have (on average 1.314544737879385) internal successors, (3335), 2537 states have internal predecessors, (3335), 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 13:37:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3335 transitions. [2024-11-03 13:37:29,836 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3335 transitions. Word has length 338 [2024-11-03 13:37:29,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:29,837 INFO L471 AbstractCegarLoop]: Abstraction has 2538 states and 3335 transitions. [2024-11-03 13:37:29,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 13:37:29,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3335 transitions. [2024-11-03 13:37:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-03 13:37:29,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:29,842 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 11, 11, 11, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:29,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (15)] Ended with exit code 0 [2024-11-03 13:37:30,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:30,043 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:30,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:30,043 INFO L85 PathProgramCache]: Analyzing trace with hash -199638851, now seen corresponding path program 1 times [2024-11-03 13:37:30,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:30,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208388872] [2024-11-03 13:37:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:30,044 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:30,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:30,045 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:30,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Waiting until timeout for monitored process [2024-11-03 13:37:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:30,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:30,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-03 13:37:30,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1429 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-03 13:37:30,522 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:30,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208388872] [2024-11-03 13:37:30,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1208388872] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:30,523 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:30,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:30,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030554729] [2024-11-03 13:37:30,523 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:30,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:30,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:30,525 INFO L87 Difference]: Start difference. First operand 2538 states and 3335 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 13:37:30,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:30,564 INFO L93 Difference]: Finished difference Result 4371 states and 5720 transitions. [2024-11-03 13:37:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:30,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 360 [2024-11-03 13:37:30,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:30,572 INFO L225 Difference]: With dead ends: 4371 [2024-11-03 13:37:30,572 INFO L226 Difference]: Without dead ends: 2376 [2024-11-03 13:37:30,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:30,576 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 16 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:30,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 400 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2376 states. [2024-11-03 13:37:30,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2376 to 1893. [2024-11-03 13:37:30,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.3213530655391121) internal successors, (2500), 1892 states have internal predecessors, (2500), 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 13:37:30,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2500 transitions. [2024-11-03 13:37:30,619 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2500 transitions. Word has length 360 [2024-11-03 13:37:30,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:30,619 INFO L471 AbstractCegarLoop]: Abstraction has 1893 states and 2500 transitions. [2024-11-03 13:37:30,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 13:37:30,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2500 transitions. [2024-11-03 13:37:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2024-11-03 13:37:30,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:30,623 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 11, 11, 9, 9, 7, 7, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:30,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (16)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:30,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:30,825 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:30,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1501383408, now seen corresponding path program 1 times [2024-11-03 13:37:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:30,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429657077] [2024-11-03 13:37:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:30,826 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:30,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:30,827 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:30,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Waiting until timeout for monitored process [2024-11-03 13:37:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:30,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:30,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1192 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2024-11-03 13:37:31,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 1192 proven. 0 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2024-11-03 13:37:31,289 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:31,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429657077] [2024-11-03 13:37:31,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1429657077] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:31,289 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:31,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-11-03 13:37:31,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472260694] [2024-11-03 13:37:31,289 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:31,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 13:37:31,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 13:37:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-03 13:37:31,290 INFO L87 Difference]: Start difference. First operand 1893 states and 2500 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 13:37:31,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:31,340 INFO L93 Difference]: Finished difference Result 4760 states and 6267 transitions. [2024-11-03 13:37:31,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-03 13:37:31,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 383 [2024-11-03 13:37:31,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:31,348 INFO L225 Difference]: With dead ends: 4760 [2024-11-03 13:37:31,348 INFO L226 Difference]: Without dead ends: 3009 [2024-11-03 13:37:31,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 762 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 13:37:31,350 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 189 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:31,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 602 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 13:37:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2024-11-03 13:37:31,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3009. [2024-11-03 13:37:31,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 3008 states have (on average 1.318816489361702) internal successors, (3967), 3008 states have internal predecessors, (3967), 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 13:37:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 3967 transitions. [2024-11-03 13:37:31,411 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 3967 transitions. Word has length 383 [2024-11-03 13:37:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:31,412 INFO L471 AbstractCegarLoop]: Abstraction has 3009 states and 3967 transitions. [2024-11-03 13:37:31,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 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 13:37:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 3967 transitions. [2024-11-03 13:37:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2024-11-03 13:37:31,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:31,419 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:31,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (17)] Ended with exit code 0 [2024-11-03 13:37:31,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:31,620 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:31,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1457111149, now seen corresponding path program 1 times [2024-11-03 13:37:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:31,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194430177] [2024-11-03 13:37:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:31,621 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:31,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:31,623 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:31,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Waiting until timeout for monitored process [2024-11-03 13:37:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:31,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:31,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2899 backedges. 1583 proven. 0 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2024-11-03 13:37:31,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2899 backedges. 1583 proven. 0 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2024-11-03 13:37:31,799 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:31,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194430177] [2024-11-03 13:37:31,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [194430177] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:31,800 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:31,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:31,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408106578] [2024-11-03 13:37:31,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:31,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:31,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:31,802 INFO L87 Difference]: Start difference. First operand 3009 states and 3967 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 13:37:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:31,912 INFO L93 Difference]: Finished difference Result 5997 states and 7909 transitions. [2024-11-03 13:37:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 491 [2024-11-03 13:37:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:31,922 INFO L225 Difference]: With dead ends: 5997 [2024-11-03 13:37:31,922 INFO L226 Difference]: Without dead ends: 3009 [2024-11-03 13:37:31,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:31,926 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:31,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 266 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:31,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2024-11-03 13:37:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 3009. [2024-11-03 13:37:31,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3009 states, 3008 states have (on average 1.3078457446808511) internal successors, (3934), 3008 states have internal predecessors, (3934), 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 13:37:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 3934 transitions. [2024-11-03 13:37:32,001 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 3934 transitions. Word has length 491 [2024-11-03 13:37:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:32,002 INFO L471 AbstractCegarLoop]: Abstraction has 3009 states and 3934 transitions. [2024-11-03 13:37:32,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 13:37:32,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 3934 transitions. [2024-11-03 13:37:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2024-11-03 13:37:32,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:32,008 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:32,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (18)] Forceful destruction successful, exit code 0 [2024-11-03 13:37:32,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:32,211 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:32,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:32,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1689523487, now seen corresponding path program 1 times [2024-11-03 13:37:32,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:32,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893373562] [2024-11-03 13:37:32,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:32,212 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:32,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:32,214 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:32,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Waiting until timeout for monitored process [2024-11-03 13:37:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:32,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 13:37:32,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:32,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 1662 proven. 0 refuted. 0 times theorem prover too weak. 1238 trivial. 0 not checked. [2024-11-03 13:37:32,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 1662 proven. 0 refuted. 0 times theorem prover too weak. 1238 trivial. 0 not checked. [2024-11-03 13:37:32,418 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:32,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893373562] [2024-11-03 13:37:32,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [893373562] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 13:37:32,418 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 13:37:32,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 13:37:32,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621497415] [2024-11-03 13:37:32,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 13:37:32,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 13:37:32,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:32,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 13:37:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:32,420 INFO L87 Difference]: Start difference. First operand 3009 states and 3934 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 13:37:32,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:32,550 INFO L93 Difference]: Finished difference Result 6371 states and 8415 transitions. [2024-11-03 13:37:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 13:37:32,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 493 [2024-11-03 13:37:32,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:32,557 INFO L225 Difference]: With dead ends: 6371 [2024-11-03 13:37:32,557 INFO L226 Difference]: Without dead ends: 3383 [2024-11-03 13:37:32,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 984 GetRequests, 983 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 13:37:32,560 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:32,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 266 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 13:37:32,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2024-11-03 13:37:32,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 3383. [2024-11-03 13:37:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3383 states, 3382 states have (on average 1.2900650502661146) internal successors, (4363), 3382 states have internal predecessors, (4363), 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 13:37:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3383 states to 3383 states and 4363 transitions. [2024-11-03 13:37:32,622 INFO L78 Accepts]: Start accepts. Automaton has 3383 states and 4363 transitions. Word has length 493 [2024-11-03 13:37:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:32,623 INFO L471 AbstractCegarLoop]: Abstraction has 3383 states and 4363 transitions. [2024-11-03 13:37:32,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 13:37:32,623 INFO L276 IsEmpty]: Start isEmpty. Operand 3383 states and 4363 transitions. [2024-11-03 13:37:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2024-11-03 13:37:32,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 13:37:32,629 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 18, 18, 16, 14, 14, 12, 12, 10, 10, 8, 8, 8, 8, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:32,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (19)] Ended with exit code 0 [2024-11-03 13:37:32,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:32,831 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 13:37:32,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 13:37:32,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1314573715, now seen corresponding path program 1 times [2024-11-03 13:37:32,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 13:37:32,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353250678] [2024-11-03 13:37:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 13:37:32,832 INFO L173 SolverBuilder]: Constructing external solver with command: bitwuzla [2024-11-03 13:37:32,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:32,833 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (exit command is (exit), workingDir is null) [2024-11-03 13:37:32,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Waiting until timeout for monitored process [2024-11-03 13:37:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 13:37:32,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 13:37:32,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 13:37:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3457 backedges. 2128 proven. 13 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2024-11-03 13:37:33,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 13:37:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3457 backedges. 2128 proven. 13 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2024-11-03 13:37:33,114 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 13:37:33,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353250678] [2024-11-03 13:37:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [353250678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 13:37:33,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 13:37:33,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-03 13:37:33,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821454804] [2024-11-03 13:37:33,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 13:37:33,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 13:37:33,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 13:37:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 13:37:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-03 13:37:33,117 INFO L87 Difference]: Start difference. First operand 3383 states and 4363 transitions. Second operand has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 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 13:37:33,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 13:37:33,505 INFO L93 Difference]: Finished difference Result 5297 states and 6831 transitions. [2024-11-03 13:37:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 13:37:33,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 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 527 [2024-11-03 13:37:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 13:37:33,510 INFO L225 Difference]: With dead ends: 5297 [2024-11-03 13:37:33,510 INFO L226 Difference]: Without dead ends: 0 [2024-11-03 13:37:33,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1051 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-03 13:37:33,514 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 238 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 13:37:33,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 844 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 13:37:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-03 13:37:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-03 13:37:33,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-03 13:37:33,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-03 13:37:33,516 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 527 [2024-11-03 13:37:33,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 13:37:33,517 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-03 13:37:33,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.166666666666664) internal successors, (247), 6 states have internal predecessors, (247), 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 13:37:33,517 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-03 13:37:33,517 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-03 13:37:33,520 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-03 13:37:33,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla (20)] Ended with exit code 0 [2024-11-03 13:37:33,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/bitwuzla [2024-11-03 13:37:33,724 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 13:37:33,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-03 13:37:34,691 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-03 13:37:34,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:37:34 BoogieIcfgContainer [2024-11-03 13:37:34,710 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-03 13:37:34,710 INFO L158 Benchmark]: Toolchain (without parser) took 15373.05ms. Allocated memory was 196.1MB in the beginning and 293.6MB in the end (delta: 97.5MB). Free memory was 152.7MB in the beginning and 167.2MB in the end (delta: -14.5MB). Peak memory consumption was 166.2MB. Max. memory is 8.0GB. [2024-11-03 13:37:34,710 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-03 13:37:34,710 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.96ms. Allocated memory is still 196.1MB. Free memory was 152.7MB in the beginning and 134.3MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2024-11-03 13:37:34,710 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.34ms. Allocated memory is still 196.1MB. Free memory was 134.3MB in the beginning and 131.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-11-03 13:37:34,711 INFO L158 Benchmark]: Boogie Preprocessor took 54.03ms. Allocated memory is still 196.1MB. Free memory was 131.7MB in the beginning and 128.5MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-11-03 13:37:34,711 INFO L158 Benchmark]: RCFGBuilder took 732.97ms. Allocated memory is still 196.1MB. Free memory was 128.0MB in the beginning and 167.6MB in the end (delta: -39.6MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. [2024-11-03 13:37:34,711 INFO L158 Benchmark]: TraceAbstraction took 14171.89ms. Allocated memory was 196.1MB in the beginning and 293.6MB in the end (delta: 97.5MB). Free memory was 167.1MB in the beginning and 167.2MB in the end (delta: -112.5kB). Peak memory consumption was 179.7MB. Max. memory is 8.0GB. [2024-11-03 13:37:34,713 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 196.1MB. Free memory is still 154.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 360.96ms. Allocated memory is still 196.1MB. Free memory was 152.7MB in the beginning and 134.3MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.34ms. Allocated memory is still 196.1MB. Free memory was 134.3MB in the beginning and 131.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.03ms. Allocated memory is still 196.1MB. Free memory was 131.7MB in the beginning and 128.5MB in the end (delta: 3.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 732.97ms. Allocated memory is still 196.1MB. Free memory was 128.0MB in the beginning and 167.6MB in the end (delta: -39.6MB). Peak memory consumption was 43.2MB. Max. memory is 8.0GB. * TraceAbstraction took 14171.89ms. Allocated memory was 196.1MB in the beginning and 293.6MB in the end (delta: 97.5MB). Free memory was 167.1MB in the beginning and 167.2MB in the end (delta: -112.5kB). Peak memory consumption was 179.7MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 679]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 138 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.1s, OverallIterations: 19, TraceHistogramMax: 20, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2029 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2029 mSDsluCounter, 8092 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4229 mSDsCounter, 448 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4163 IncrementalHoareTripleChecker+Invalid, 4611 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 448 mSolverCounterUnsat, 3863 mSDtfsCounter, 4163 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9626 GetRequests, 9580 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3441occurred in iteration=13, InterpolantAutomatonStates: 82, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 19 MinimizatonAttempts, 3086 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 4822 NumberOfCodeBlocks, 4822 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 9606 ConstructedInterpolants, 0 QuantifiedInterpolants, 13507 SizeOfPredicates, 3 NumberOfNonLiveVariables, 5557 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 38 InterpolantComputations, 32 PerfectInterpolantSequences, 36574/36666 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: ((((((((((((((((((s__s3__tmp__next_state___0 == 8640) && (blastFlag != 4)) && (3 == s__state)) || (((blastFlag == 2) && (8528 == s__state)) && (0 == s__hit))) || (((8656 == s__state) && (blastFlag != 4)) && (0 != s__hit))) || ((((8448 == s__state) && (blastFlag != 4)) && (s__s3__tmp__next_state___0 == 3)) && (0 == s__hit))) || ((((((s__s3__tmp__next_state___0 != 8464) && (blastFlag == 2)) && (s__s3__tmp__next_state___0 != 8497)) && (s__s3__tmp__next_state___0 != 8496)) && (8497 != s__state)) && (0 == s__hit))) || (((blastFlag == 2) && (8512 == s__state)) && (0 == s__hit))) || (((blastFlag == 2) && (8544 == s__state)) && (0 == s__hit))) || (blastFlag == 1)) || (((s__s3__tmp__next_state___0 != 8464) && (blastFlag != 4)) && (8672 == s__state))) || ((blastFlag == 0) && (8464 == s__state))) || (((blastFlag == 2) && (8560 == s__state)) && (0 == s__hit))) || ((((8448 == s__state) && (s__s3__tmp__next_state___0 == 8640)) && (blastFlag != 4)) && (0 != s__hit))) || (((blastFlag != 4) && (8672 == s__state)) && (0 != s__hit))) || ((((s__s3__tmp__next_state___0 != 8497) && (s__s3__tmp__next_state___0 != 8496)) && (3 == s__state)) && (0 == s__hit))) || (((s__s3__tmp__next_state___0 != 8464) && (blastFlag == 2)) && (8656 == s__state))) || ((((s__s3__tmp__next_state___0 == 8640) && (blastFlag != 4)) && (8640 == s__state)) && (0 != s__hit))) RESULT: Ultimate proved your program to be correct! [2024-11-03 13:37:34,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...