/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 'z3 -smt2 -in SMTLIB2_COMPLIANT=true' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/s3_srvr_3a_alt.BV.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-356b6ba-m [2024-10-31 17:24:50,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 17:24:50,958 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 17:24:50,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 17:24:50,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 17:24:50,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 17:24:50,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 17:24:50,983 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 17:24:50,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 17:24:50,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 17:24:50,984 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 17:24:50,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 17:24:50,984 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 17:24:50,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 17:24:50,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 17:24:50,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 17:24:50,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 17:24:50,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 17:24:50,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 17:24:50,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 17:24:50,989 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 17:24:50,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 17:24:50,990 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 17:24:50,990 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 17:24:50,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 17:24:50,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 17:24:50,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 17:24:50,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 17:24:50,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 17:24:50,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 17:24:50,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 17:24:50,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 17:24:50,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 17:24:50,992 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 17:24:50,992 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 17:24:50,992 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 17:24:50,992 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 17:24:50,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 17:24:50,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 17:24:50,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 17:24:50,993 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 17:24:50,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:51,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 17:24:51,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 17:24:51,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 17:24:51,262 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 17:24:51,262 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 17:24:51,263 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2024-10-31 17:24:52,442 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 17:24:52,620 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 17:24:52,620 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2024-10-31 17:24:52,627 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b9ec1743/531e5eb8ace6444cbe4dee7332c7fa28/FLAG367726b57 [2024-10-31 17:24:52,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b9ec1743/531e5eb8ace6444cbe4dee7332c7fa28 [2024-10-31 17:24:52,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 17:24:52,640 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-31 17:24:52,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 17:24:52,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 17:24:52,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 17:24:52,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:52,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4daf1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52, skipping insertion in model container [2024-10-31 17:24:52,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:52,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 17:24:52,873 WARN L251 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_3a_alt.BV.c.cil.c[44628,44641] [2024-10-31 17:24:52,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 17:24:52,894 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 17:24:52,930 WARN L251 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_3a_alt.BV.c.cil.c[44628,44641] [2024-10-31 17:24:52,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 17:24:52,944 INFO L204 MainTranslator]: Completed translation [2024-10-31 17:24:52,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52 WrapperNode [2024-10-31 17:24:52,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 17:24:52,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 17:24:52,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 17:24:52,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 17:24:52,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:52,957 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:52,987 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 514 [2024-10-31 17:24:52,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 17:24:52,991 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 17:24:52,991 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 17:24:52,991 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 17:24:52,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:52,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,003 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,015 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]. [2024-10-31 17:24:53,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,037 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 17:24:53,047 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 17:24:53,047 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 17:24:53,047 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 17:24:53,047 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (1/1) ... [2024-10-31 17:24:53,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 17:24:53,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:53,084 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) [2024-10-31 17:24:53,085 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 [2024-10-31 17:24:53,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 17:24:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 17:24:53,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 17:24:53,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 17:24:53,173 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 17:24:53,174 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 17:24:53,190 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-31 17:24:53,615 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2024-10-31 17:24:53,616 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2024-10-31 17:24:53,654 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-10-31 17:24:53,654 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 17:24:53,668 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 17:24:53,668 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 17:24:53,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 05:24:53 BoogieIcfgContainer [2024-10-31 17:24:53,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 17:24:53,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 17:24:53,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 17:24:53,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 17:24:53,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 05:24:52" (1/3) ... [2024-10-31 17:24:53,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca8f186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 05:24:53, skipping insertion in model container [2024-10-31 17:24:53,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 05:24:52" (2/3) ... [2024-10-31 17:24:53,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca8f186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 05:24:53, skipping insertion in model container [2024-10-31 17:24:53,675 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 05:24:53" (3/3) ... [2024-10-31 17:24:53,676 INFO L112 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a_alt.BV.c.cil.c [2024-10-31 17:24:53,688 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 17:24:53,688 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 17:24:53,734 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 17:24:53,739 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;@29032af3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 17:24:53,740 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 17:24:53,744 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) [2024-10-31 17:24:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-31 17:24:53,750 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:53,751 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] [2024-10-31 17:24:53,752 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:53,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:53,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1632003015, now seen corresponding path program 1 times [2024-10-31 17:24:53,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:53,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954398115] [2024-10-31 17:24:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:53,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:53,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:53,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:53,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 17:24:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:53,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-31 17:24:53,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:24:53,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:24:53,949 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:53,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954398115] [2024-10-31 17:24:53,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1954398115] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:53,950 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:53,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199163159] [2024-10-31 17:24:53,952 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:53,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:53,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:53,980 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) [2024-10-31 17:24:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:54,163 INFO L93 Difference]: Finished difference Result 275 states and 473 transitions. [2024-10-31 17:24:54,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:54,167 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 [2024-10-31 17:24:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:54,173 INFO L225 Difference]: With dead ends: 275 [2024-10-31 17:24:54,173 INFO L226 Difference]: Without dead ends: 125 [2024-10-31 17:24:54,175 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 [2024-10-31 17:24:54,178 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 8 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:54,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 324 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 17:24:54,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-10-31 17:24:54,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-10-31 17:24:54,203 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) [2024-10-31 17:24:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 185 transitions. [2024-10-31 17:24:54,207 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 185 transitions. Word has length 44 [2024-10-31 17:24:54,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:54,208 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 185 transitions. [2024-10-31 17:24:54,208 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) [2024-10-31 17:24:54,208 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 185 transitions. [2024-10-31 17:24:54,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-31 17:24:54,210 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:54,210 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] [2024-10-31 17:24:54,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 17:24:54,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:54,415 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:54,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:54,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1722912794, now seen corresponding path program 1 times [2024-10-31 17:24:54,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:54,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482372379] [2024-10-31 17:24:54,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:54,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:54,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:54,418 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:54,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 17:24:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:54,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:54,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:24:54,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:54,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 17:24:54,576 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:54,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482372379] [2024-10-31 17:24:54,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1482372379] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:54,577 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:54,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:54,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527415553] [2024-10-31 17:24:54,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:54,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:54,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:54,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:54,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:54,581 INFO L87 Difference]: Start difference. First operand 125 states and 185 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-31 17:24:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:54,716 INFO L93 Difference]: Finished difference Result 252 states and 380 transitions. [2024-10-31 17:24:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:54,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 [2024-10-31 17:24:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:54,718 INFO L225 Difference]: With dead ends: 252 [2024-10-31 17:24:54,718 INFO L226 Difference]: Without dead ends: 146 [2024-10-31 17:24:54,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:54,720 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:54,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 255 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:24:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-10-31 17:24:54,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-10-31 17:24:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.4551724137931035) internal successors, (211), 145 states have internal predecessors, (211), 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) [2024-10-31 17:24:54,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 211 transitions. [2024-10-31 17:24:54,727 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 211 transitions. Word has length 60 [2024-10-31 17:24:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:54,727 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 211 transitions. [2024-10-31 17:24:54,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-10-31 17:24:54,728 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 211 transitions. [2024-10-31 17:24:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-31 17:24:54,729 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:54,729 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] [2024-10-31 17:24:54,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 17:24:54,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:54,930 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:54,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:54,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1797387181, now seen corresponding path program 1 times [2024-10-31 17:24:54,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:54,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731035631] [2024-10-31 17:24:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:54,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:54,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:54,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 17:24:54,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:54,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:55,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 17:24:55,043 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 17:24:55,078 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:55,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731035631] [2024-10-31 17:24:55,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [731035631] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:55,079 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:55,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:55,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916429287] [2024-10-31 17:24:55,079 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:55,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:55,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:55,081 INFO L87 Difference]: Start difference. First operand 146 states and 211 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-10-31 17:24:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:55,231 INFO L93 Difference]: Finished difference Result 297 states and 437 transitions. [2024-10-31 17:24:55,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:55,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 81 [2024-10-31 17:24:55,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:55,233 INFO L225 Difference]: With dead ends: 297 [2024-10-31 17:24:55,233 INFO L226 Difference]: Without dead ends: 170 [2024-10-31 17:24:55,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:55,235 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:55,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 268 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:24:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-31 17:24:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-10-31 17:24:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.4201183431952662) internal successors, (240), 169 states have internal predecessors, (240), 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) [2024-10-31 17:24:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 240 transitions. [2024-10-31 17:24:55,247 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 240 transitions. Word has length 81 [2024-10-31 17:24:55,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:55,248 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 240 transitions. [2024-10-31 17:24:55,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-10-31 17:24:55,248 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 240 transitions. [2024-10-31 17:24:55,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-31 17:24:55,250 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:55,252 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] [2024-10-31 17:24:55,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 17:24:55,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:55,453 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:55,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:55,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2045533675, now seen corresponding path program 1 times [2024-10-31 17:24:55,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:55,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56574363] [2024-10-31 17:24:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:55,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:55,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:55,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:55,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 17:24:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:55,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:55,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 17:24:55,596 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 17:24:55,649 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:55,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56574363] [2024-10-31 17:24:55,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [56574363] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:55,650 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:55,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:55,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732704144] [2024-10-31 17:24:55,650 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:55,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:55,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:55,652 INFO L87 Difference]: Start difference. First operand 170 states and 240 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-10-31 17:24:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:55,821 INFO L93 Difference]: Finished difference Result 362 states and 529 transitions. [2024-10-31 17:24:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:55,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 81 [2024-10-31 17:24:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:55,823 INFO L225 Difference]: With dead ends: 362 [2024-10-31 17:24:55,823 INFO L226 Difference]: Without dead ends: 211 [2024-10-31 17:24:55,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:55,825 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 10 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:55,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 255 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 17:24:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-10-31 17:24:55,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-10-31 17:24:55,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.361904761904762) internal successors, (286), 210 states have internal predecessors, (286), 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) [2024-10-31 17:24:55,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 286 transitions. [2024-10-31 17:24:55,833 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 286 transitions. Word has length 81 [2024-10-31 17:24:55,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:55,834 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 286 transitions. [2024-10-31 17:24:55,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-10-31 17:24:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 286 transitions. [2024-10-31 17:24:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-31 17:24:55,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:55,836 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2024-10-31 17:24:55,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 17:24:56,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:56,037 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:56,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:56,037 INFO L85 PathProgramCache]: Analyzing trace with hash 755662145, now seen corresponding path program 1 times [2024-10-31 17:24:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:56,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385249551] [2024-10-31 17:24:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:56,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:56,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:56,039 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:56,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 17:24:56,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:56,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:56,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-31 17:24:56,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-31 17:24:56,173 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:56,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385249551] [2024-10-31 17:24:56,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [385249551] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:56,173 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:56,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:56,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880168451] [2024-10-31 17:24:56,174 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:56,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:56,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:56,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:56,175 INFO L87 Difference]: Start difference. First operand 211 states and 286 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-10-31 17:24:56,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:56,290 INFO L93 Difference]: Finished difference Result 428 states and 590 transitions. [2024-10-31 17:24:56,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:56,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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 101 [2024-10-31 17:24:56,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:56,292 INFO L225 Difference]: With dead ends: 428 [2024-10-31 17:24:56,292 INFO L226 Difference]: Without dead ends: 236 [2024-10-31 17:24:56,292 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:56,293 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 9 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:56,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 270 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:24:56,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-10-31 17:24:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2024-10-31 17:24:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.3446808510638297) internal successors, (316), 235 states have internal predecessors, (316), 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) [2024-10-31 17:24:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 316 transitions. [2024-10-31 17:24:56,301 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 316 transitions. Word has length 101 [2024-10-31 17:24:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:56,302 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 316 transitions. [2024-10-31 17:24:56,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-10-31 17:24:56,302 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 316 transitions. [2024-10-31 17:24:56,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-31 17:24:56,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:56,303 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, 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] [2024-10-31 17:24:56,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 17:24:56,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:56,508 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:56,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:56,508 INFO L85 PathProgramCache]: Analyzing trace with hash -687746511, now seen corresponding path program 1 times [2024-10-31 17:24:56,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:56,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457362722] [2024-10-31 17:24:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:56,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:56,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:56,511 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:56,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-31 17:24:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:56,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:56,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 17:24:56,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-31 17:24:56,677 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457362722] [2024-10-31 17:24:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [457362722] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:56,677 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:56,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129659393] [2024-10-31 17:24:56,678 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:56,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:56,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:56,679 INFO L87 Difference]: Start difference. First operand 236 states and 316 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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) [2024-10-31 17:24:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:56,724 INFO L93 Difference]: Finished difference Result 666 states and 899 transitions. [2024-10-31 17:24:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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 121 [2024-10-31 17:24:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:56,726 INFO L225 Difference]: With dead ends: 666 [2024-10-31 17:24:56,726 INFO L226 Difference]: Without dead ends: 449 [2024-10-31 17:24:56,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:56,727 INFO L432 NwaCegarLoop]: 270 mSDtfsCounter, 113 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:56,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 433 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:24:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-10-31 17:24:56,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2024-10-31 17:24:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.3415178571428572) internal successors, (601), 448 states have internal predecessors, (601), 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) [2024-10-31 17:24:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 601 transitions. [2024-10-31 17:24:56,737 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 601 transitions. Word has length 121 [2024-10-31 17:24:56,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:56,738 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 601 transitions. [2024-10-31 17:24:56,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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) [2024-10-31 17:24:56,738 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 601 transitions. [2024-10-31 17:24:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-10-31 17:24:56,739 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:56,739 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, 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] [2024-10-31 17:24:56,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-31 17:24:56,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:56,940 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:56,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:56,940 INFO L85 PathProgramCache]: Analyzing trace with hash 209646767, now seen corresponding path program 1 times [2024-10-31 17:24:56,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:56,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973037840] [2024-10-31 17:24:56,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:56,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:56,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:56,942 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:56,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-31 17:24:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:57,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:57,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-31 17:24:57,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-31 17:24:57,118 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:57,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973037840] [2024-10-31 17:24:57,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1973037840] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:57,118 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:57,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 17:24:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182815313] [2024-10-31 17:24:57,118 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:57,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 17:24:57,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 17:24:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:24:57,119 INFO L87 Difference]: Start difference. First operand 449 states and 601 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-10-31 17:24:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:57,168 INFO L93 Difference]: Finished difference Result 1302 states and 1754 transitions. [2024-10-31 17:24:57,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 17:24:57,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 121 [2024-10-31 17:24:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:57,171 INFO L225 Difference]: With dead ends: 1302 [2024-10-31 17:24:57,171 INFO L226 Difference]: Without dead ends: 872 [2024-10-31 17:24:57,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:24:57,172 INFO L432 NwaCegarLoop]: 251 mSDtfsCounter, 297 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:57,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 561 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:24:57,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-10-31 17:24:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2024-10-31 17:24:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.3432835820895523) internal successors, (1170), 871 states have internal predecessors, (1170), 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) [2024-10-31 17:24:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1170 transitions. [2024-10-31 17:24:57,192 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1170 transitions. Word has length 121 [2024-10-31 17:24:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:57,192 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1170 transitions. [2024-10-31 17:24:57,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2024-10-31 17:24:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1170 transitions. [2024-10-31 17:24:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-10-31 17:24:57,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:57,195 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-31 17:24:57,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-31 17:24:57,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:57,397 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:57,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:57,398 INFO L85 PathProgramCache]: Analyzing trace with hash -247255522, now seen corresponding path program 1 times [2024-10-31 17:24:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:57,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121724180] [2024-10-31 17:24:57,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:57,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:57,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:57,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:57,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-31 17:24:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:57,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:57,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-31 17:24:57,541 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-31 17:24:57,595 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:57,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121724180] [2024-10-31 17:24:57,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2121724180] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:57,595 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:57,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 17:24:57,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152805153] [2024-10-31 17:24:57,595 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:57,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 17:24:57,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 17:24:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:24:57,596 INFO L87 Difference]: Start difference. First operand 872 states and 1170 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2024-10-31 17:24:57,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:57,820 INFO L93 Difference]: Finished difference Result 2017 states and 2829 transitions. [2024-10-31 17:24:57,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 17:24:57,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 [2024-10-31 17:24:57,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:57,824 INFO L225 Difference]: With dead ends: 2017 [2024-10-31 17:24:57,824 INFO L226 Difference]: Without dead ends: 1164 [2024-10-31 17:24:57,824 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 [2024-10-31 17:24:57,825 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 48 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:57,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 219 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 17:24:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-10-31 17:24:57,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1150. [2024-10-31 17:24:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.370757180156658) internal successors, (1575), 1149 states have internal predecessors, (1575), 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) [2024-10-31 17:24:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1575 transitions. [2024-10-31 17:24:57,845 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1575 transitions. Word has length 159 [2024-10-31 17:24:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:57,845 INFO L471 AbstractCegarLoop]: Abstraction has 1150 states and 1575 transitions. [2024-10-31 17:24:57,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2024-10-31 17:24:57,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1575 transitions. [2024-10-31 17:24:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-31 17:24:57,847 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:57,847 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2024-10-31 17:24:57,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-31 17:24:58,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:58,048 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:58,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:58,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1523776844, now seen corresponding path program 1 times [2024-10-31 17:24:58,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154042207] [2024-10-31 17:24:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:58,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:58,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:58,050 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:58,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-31 17:24:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:58,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:58,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:58,154 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-10-31 17:24:58,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:58,180 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-10-31 17:24:58,180 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:58,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154042207] [2024-10-31 17:24:58,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1154042207] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:58,181 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:58,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:58,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734133428] [2024-10-31 17:24:58,181 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:58,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:58,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:58,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:58,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:58,182 INFO L87 Difference]: Start difference. First operand 1150 states and 1575 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-31 17:24:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:58,213 INFO L93 Difference]: Finished difference Result 2305 states and 3157 transitions. [2024-10-31 17:24:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 166 [2024-10-31 17:24:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:58,217 INFO L225 Difference]: With dead ends: 2305 [2024-10-31 17:24:58,217 INFO L226 Difference]: Without dead ends: 1174 [2024-10-31 17:24:58,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:58,218 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 10 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 346 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 [2024-10-31 17:24:58,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 346 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:24:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2024-10-31 17:24:58,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2024-10-31 17:24:58,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 1.3674339300937766) internal successors, (1604), 1173 states have internal predecessors, (1604), 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) [2024-10-31 17:24:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1604 transitions. [2024-10-31 17:24:58,233 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1604 transitions. Word has length 166 [2024-10-31 17:24:58,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:58,234 INFO L471 AbstractCegarLoop]: Abstraction has 1174 states and 1604 transitions. [2024-10-31 17:24:58,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-10-31 17:24:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1604 transitions. [2024-10-31 17:24:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-10-31 17:24:58,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:58,235 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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] [2024-10-31 17:24:58,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-31 17:24:58,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:58,436 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:58,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:58,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1259129354, now seen corresponding path program 1 times [2024-10-31 17:24:58,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:58,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495059869] [2024-10-31 17:24:58,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:58,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:58,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:58,438 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:58,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-31 17:24:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:58,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:58,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-10-31 17:24:58,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-10-31 17:24:58,554 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:58,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495059869] [2024-10-31 17:24:58,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1495059869] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:58,554 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:58,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758639274] [2024-10-31 17:24:58,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:58,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:58,555 INFO L87 Difference]: Start difference. First operand 1174 states and 1604 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-10-31 17:24:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:58,586 INFO L93 Difference]: Finished difference Result 2331 states and 3188 transitions. [2024-10-31 17:24:58,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:58,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 166 [2024-10-31 17:24:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:58,590 INFO L225 Difference]: With dead ends: 2331 [2024-10-31 17:24:58,590 INFO L226 Difference]: Without dead ends: 1176 [2024-10-31 17:24:58,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:58,592 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 [2024-10-31 17:24:58,592 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] [2024-10-31 17:24:58,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-10-31 17:24:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1176. [2024-10-31 17:24:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 1.366808510638298) internal successors, (1606), 1175 states have internal predecessors, (1606), 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) [2024-10-31 17:24:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1606 transitions. [2024-10-31 17:24:58,609 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1606 transitions. Word has length 166 [2024-10-31 17:24:58,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:58,609 INFO L471 AbstractCegarLoop]: Abstraction has 1176 states and 1606 transitions. [2024-10-31 17:24:58,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-10-31 17:24:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1606 transitions. [2024-10-31 17:24:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2024-10-31 17:24:58,611 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:58,611 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2024-10-31 17:24:58,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-31 17:24:58,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:58,812 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:58,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:58,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1724564893, now seen corresponding path program 1 times [2024-10-31 17:24:58,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:58,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591985186] [2024-10-31 17:24:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:58,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:58,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:58,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:58,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 17:24:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:58,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:58,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-10-31 17:24:58,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-10-31 17:24:58,966 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591985186] [2024-10-31 17:24:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1591985186] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:58,966 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:58,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:24:58,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877292919] [2024-10-31 17:24:58,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:58,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:24:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:24:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:58,967 INFO L87 Difference]: Start difference. First operand 1176 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2024-10-31 17:24:59,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:59,077 INFO L93 Difference]: Finished difference Result 2455 states and 3399 transitions. [2024-10-31 17:24:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:24:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 202 [2024-10-31 17:24:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:59,083 INFO L225 Difference]: With dead ends: 2455 [2024-10-31 17:24:59,084 INFO L226 Difference]: Without dead ends: 1300 [2024-10-31 17:24:59,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:24:59,085 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 10 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:59,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 268 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:24:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2024-10-31 17:24:59,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2024-10-31 17:24:59,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 1.3471901462663587) internal successors, (1750), 1299 states have internal predecessors, (1750), 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) [2024-10-31 17:24:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1750 transitions. [2024-10-31 17:24:59,102 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1750 transitions. Word has length 202 [2024-10-31 17:24:59,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:59,102 INFO L471 AbstractCegarLoop]: Abstraction has 1300 states and 1750 transitions. [2024-10-31 17:24:59,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2024-10-31 17:24:59,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1750 transitions. [2024-10-31 17:24:59,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-10-31 17:24:59,104 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:59,104 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2024-10-31 17:24:59,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-31 17:24:59,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:59,305 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:59,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash 598072934, now seen corresponding path program 1 times [2024-10-31 17:24:59,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:59,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531458365] [2024-10-31 17:24:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:59,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:59,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:59,307 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:59,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-31 17:24:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:59,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:59,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:24:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2024-10-31 17:24:59,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:24:59,480 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2024-10-31 17:24:59,480 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:24:59,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531458365] [2024-10-31 17:24:59,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1531458365] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:24:59,480 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:24:59,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2024-10-31 17:24:59,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926024108] [2024-10-31 17:24:59,481 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:24:59,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 17:24:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:24:59,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 17:24:59,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:24:59,481 INFO L87 Difference]: Start difference. First operand 1300 states and 1750 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-10-31 17:24:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:24:59,675 INFO L93 Difference]: Finished difference Result 2647 states and 3669 transitions. [2024-10-31 17:24:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 17:24:59,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 229 [2024-10-31 17:24:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:24:59,678 INFO L225 Difference]: With dead ends: 2647 [2024-10-31 17:24:59,678 INFO L226 Difference]: Without dead ends: 1190 [2024-10-31 17:24:59,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:24:59,680 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 38 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 17:24:59,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 221 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 17:24:59,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2024-10-31 17:24:59,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1190. [2024-10-31 17:24:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 1189 states have (on average 1.3650126156433977) internal successors, (1623), 1189 states have internal predecessors, (1623), 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) [2024-10-31 17:24:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1623 transitions. [2024-10-31 17:24:59,695 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1623 transitions. Word has length 229 [2024-10-31 17:24:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:24:59,696 INFO L471 AbstractCegarLoop]: Abstraction has 1190 states and 1623 transitions. [2024-10-31 17:24:59,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2024-10-31 17:24:59,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1623 transitions. [2024-10-31 17:24:59,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-31 17:24:59,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:24:59,698 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2024-10-31 17:24:59,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-31 17:24:59,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:59,899 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:24:59,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:24:59,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1622703552, now seen corresponding path program 1 times [2024-10-31 17:24:59,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:24:59,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738215234] [2024-10-31 17:24:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:24:59,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:24:59,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:24:59,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:24:59,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-31 17:24:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:24:59,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:24:59,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:00,160 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-31 17:25:00,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-10-31 17:25:00,314 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:00,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738215234] [2024-10-31 17:25:00,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1738215234] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:25:00,315 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:25:00,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:25:00,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333149700] [2024-10-31 17:25:00,315 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:25:00,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:25:00,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:25:00,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:00,316 INFO L87 Difference]: Start difference. First operand 1190 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-10-31 17:25:00,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:00,340 INFO L93 Difference]: Finished difference Result 3319 states and 4579 transitions. [2024-10-31 17:25:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:25:00,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 [2024-10-31 17:25:00,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:00,344 INFO L225 Difference]: With dead ends: 3319 [2024-10-31 17:25:00,344 INFO L226 Difference]: Without dead ends: 1147 [2024-10-31 17:25:00,345 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 [2024-10-31 17:25:00,346 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 96 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:00,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 454 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:25:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2024-10-31 17:25:00,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2024-10-31 17:25:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 1146 states have (on average 1.369109947643979) internal successors, (1569), 1146 states have internal predecessors, (1569), 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) [2024-10-31 17:25:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1569 transitions. [2024-10-31 17:25:00,363 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1569 transitions. Word has length 269 [2024-10-31 17:25:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:00,363 INFO L471 AbstractCegarLoop]: Abstraction has 1147 states and 1569 transitions. [2024-10-31 17:25:00,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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) [2024-10-31 17:25:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1569 transitions. [2024-10-31 17:25:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2024-10-31 17:25:00,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:00,366 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2024-10-31 17:25:00,380 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-31 17:25:00,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:00,567 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:00,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 746936446, now seen corresponding path program 1 times [2024-10-31 17:25:00,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:00,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592848731] [2024-10-31 17:25:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:00,569 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:00,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-31 17:25:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:00,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:25:00,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:00,687 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-10-31 17:25:00,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 500 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-10-31 17:25:00,716 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:00,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592848731] [2024-10-31 17:25:00,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1592848731] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:25:00,716 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:25:00,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:25:00,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762993379] [2024-10-31 17:25:00,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:25:00,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:25:00,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:25:00,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:00,718 INFO L87 Difference]: Start difference. First operand 1147 states and 1569 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-10-31 17:25:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:00,825 INFO L93 Difference]: Finished difference Result 2354 states and 3245 transitions. [2024-10-31 17:25:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:25:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 315 [2024-10-31 17:25:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:00,831 INFO L225 Difference]: With dead ends: 2354 [2024-10-31 17:25:00,831 INFO L226 Difference]: Without dead ends: 1228 [2024-10-31 17:25:00,832 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:00,833 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:00,833 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 262 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:25:00,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2024-10-31 17:25:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1228. [2024-10-31 17:25:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 1227 states have (on average 1.3569682151589242) internal successors, (1665), 1227 states have internal predecessors, (1665), 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) [2024-10-31 17:25:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1665 transitions. [2024-10-31 17:25:00,847 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1665 transitions. Word has length 315 [2024-10-31 17:25:00,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:00,848 INFO L471 AbstractCegarLoop]: Abstraction has 1228 states and 1665 transitions. [2024-10-31 17:25:00,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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) [2024-10-31 17:25:00,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1665 transitions. [2024-10-31 17:25:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-10-31 17:25:00,850 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:00,850 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2024-10-31 17:25:00,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-31 17:25:01,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:01,051 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:01,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:01,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1865013778, now seen corresponding path program 1 times [2024-10-31 17:25:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:01,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335026686] [2024-10-31 17:25:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:01,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:01,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:01,053 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:01,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-31 17:25:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:01,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:25:01,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:01,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2024-10-31 17:25:01,181 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:01,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 642 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2024-10-31 17:25:01,223 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:01,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335026686] [2024-10-31 17:25:01,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1335026686] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:25:01,223 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:25:01,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:25:01,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473325967] [2024-10-31 17:25:01,224 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:25:01,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:25:01,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:01,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:25:01,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:01,225 INFO L87 Difference]: Start difference. First operand 1228 states and 1665 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2024-10-31 17:25:01,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:01,336 INFO L93 Difference]: Finished difference Result 2522 states and 3449 transitions. [2024-10-31 17:25:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:25:01,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 [2024-10-31 17:25:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:01,343 INFO L225 Difference]: With dead ends: 2522 [2024-10-31 17:25:01,343 INFO L226 Difference]: Without dead ends: 1315 [2024-10-31 17:25:01,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 673 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:01,346 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:01,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 262 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:25:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2024-10-31 17:25:01,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1315. [2024-10-31 17:25:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1315 states, 1314 states have (on average 1.3447488584474885) internal successors, (1767), 1314 states have internal predecessors, (1767), 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) [2024-10-31 17:25:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1767 transitions. [2024-10-31 17:25:01,362 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1767 transitions. Word has length 338 [2024-10-31 17:25:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:01,362 INFO L471 AbstractCegarLoop]: Abstraction has 1315 states and 1767 transitions. [2024-10-31 17:25:01,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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) [2024-10-31 17:25:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1767 transitions. [2024-10-31 17:25:01,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2024-10-31 17:25:01,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:01,366 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2024-10-31 17:25:01,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-31 17:25:01,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:01,571 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:01,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:01,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1876884711, now seen corresponding path program 1 times [2024-10-31 17:25:01,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:01,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969816158] [2024-10-31 17:25:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:01,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:01,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:01,573 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:01,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-31 17:25:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:01,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:25:01,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:01,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2024-10-31 17:25:01,735 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 699 proven. 0 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2024-10-31 17:25:01,798 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969816158] [2024-10-31 17:25:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1969816158] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:25:01,798 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:25:01,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:25:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29937239] [2024-10-31 17:25:01,799 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:25:01,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:25:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:25:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:01,800 INFO L87 Difference]: Start difference. First operand 1315 states and 1767 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-10-31 17:25:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:01,822 INFO L93 Difference]: Finished difference Result 3897 states and 5242 transitions. [2024-10-31 17:25:01,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:25:01,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 370 [2024-10-31 17:25:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:01,828 INFO L225 Difference]: With dead ends: 3897 [2024-10-31 17:25:01,828 INFO L226 Difference]: Without dead ends: 2603 [2024-10-31 17:25:01,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:01,830 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 121 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:01,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 366 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 17:25:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2024-10-31 17:25:01,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 2601. [2024-10-31 17:25:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2600 states have (on average 1.3434615384615385) internal successors, (3493), 2600 states have internal predecessors, (3493), 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) [2024-10-31 17:25:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3493 transitions. [2024-10-31 17:25:01,862 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3493 transitions. Word has length 370 [2024-10-31 17:25:01,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:01,862 INFO L471 AbstractCegarLoop]: Abstraction has 2601 states and 3493 transitions. [2024-10-31 17:25:01,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2024-10-31 17:25:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3493 transitions. [2024-10-31 17:25:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-10-31 17:25:01,865 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:01,866 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2024-10-31 17:25:01,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-31 17:25:02,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:02,066 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:02,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash -59651589, now seen corresponding path program 1 times [2024-10-31 17:25:02,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:02,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770418348] [2024-10-31 17:25:02,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:02,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:02,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:02,068 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:02,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-31 17:25:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:02,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 17:25:02,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-10-31 17:25:02,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 875 proven. 26 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2024-10-31 17:25:02,332 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:02,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770418348] [2024-10-31 17:25:02,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1770418348] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:25:02,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:25:02,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2024-10-31 17:25:02,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570735796] [2024-10-31 17:25:02,333 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:25:02,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 17:25:02,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:02,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 17:25:02,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 17:25:02,334 INFO L87 Difference]: Start difference. First operand 2601 states and 3493 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2024-10-31 17:25:02,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:02,546 INFO L93 Difference]: Finished difference Result 7467 states and 9907 transitions. [2024-10-31 17:25:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 17:25:02,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 371 [2024-10-31 17:25:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:02,560 INFO L225 Difference]: With dead ends: 7467 [2024-10-31 17:25:02,560 INFO L226 Difference]: Without dead ends: 4887 [2024-10-31 17:25:02,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 17:25:02,563 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 134 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:02,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 563 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 17:25:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4887 states. [2024-10-31 17:25:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4887 to 3243. [2024-10-31 17:25:02,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3243 states, 3242 states have (on average 1.3439235040098705) internal successors, (4357), 3242 states have internal predecessors, (4357), 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) [2024-10-31 17:25:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3243 states to 3243 states and 4357 transitions. [2024-10-31 17:25:02,613 INFO L78 Accepts]: Start accepts. Automaton has 3243 states and 4357 transitions. Word has length 371 [2024-10-31 17:25:02,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:02,613 INFO L471 AbstractCegarLoop]: Abstraction has 3243 states and 4357 transitions. [2024-10-31 17:25:02,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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) [2024-10-31 17:25:02,613 INFO L276 IsEmpty]: Start isEmpty. Operand 3243 states and 4357 transitions. [2024-10-31 17:25:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2024-10-31 17:25:02,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:02,617 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1] [2024-10-31 17:25:02,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-31 17:25:02,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:02,818 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:02,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:02,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1792598736, now seen corresponding path program 1 times [2024-10-31 17:25:02,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:02,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456076892] [2024-10-31 17:25:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:02,821 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:02,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-31 17:25:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:02,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:25:02,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2024-10-31 17:25:02,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2024-10-31 17:25:02,966 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:02,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456076892] [2024-10-31 17:25:02,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1456076892] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:25:02,966 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:25:02,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:25:02,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379871891] [2024-10-31 17:25:02,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:25:02,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:25:02,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:02,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:25:02,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:02,967 INFO L87 Difference]: Start difference. First operand 3243 states and 4357 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-10-31 17:25:03,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:03,122 INFO L93 Difference]: Finished difference Result 6705 states and 9049 transitions. [2024-10-31 17:25:03,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:25:03,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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 401 [2024-10-31 17:25:03,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:03,133 INFO L225 Difference]: With dead ends: 6705 [2024-10-31 17:25:03,133 INFO L226 Difference]: Without dead ends: 3483 [2024-10-31 17:25:03,135 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:03,136 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:03,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 264 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:25:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2024-10-31 17:25:03,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3363. [2024-10-31 17:25:03,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 3362 states have (on average 1.3405710886377156) internal successors, (4507), 3362 states have internal predecessors, (4507), 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) [2024-10-31 17:25:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4507 transitions. [2024-10-31 17:25:03,180 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4507 transitions. Word has length 401 [2024-10-31 17:25:03,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:03,180 INFO L471 AbstractCegarLoop]: Abstraction has 3363 states and 4507 transitions. [2024-10-31 17:25:03,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-10-31 17:25:03,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4507 transitions. [2024-10-31 17:25:03,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2024-10-31 17:25:03,183 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:03,184 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 10, 10, 9, 9, 8, 8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1] [2024-10-31 17:25:03,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-31 17:25:03,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:03,384 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:03,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash 571180815, now seen corresponding path program 1 times [2024-10-31 17:25:03,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:03,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456830809] [2024-10-31 17:25:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:03,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:03,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:03,386 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:03,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-31 17:25:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:03,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:25:03,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-10-31 17:25:03,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1670 backedges. 983 proven. 0 refuted. 0 times theorem prover too weak. 687 trivial. 0 not checked. [2024-10-31 17:25:03,558 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:03,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456830809] [2024-10-31 17:25:03,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [456830809] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:25:03,558 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:25:03,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:25:03,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788141129] [2024-10-31 17:25:03,559 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:25:03,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:25:03,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:25:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:03,560 INFO L87 Difference]: Start difference. First operand 3363 states and 4507 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) [2024-10-31 17:25:03,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:03,696 INFO L93 Difference]: Finished difference Result 7113 states and 9685 transitions. [2024-10-31 17:25:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:25:03,699 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 402 [2024-10-31 17:25:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:03,713 INFO L225 Difference]: With dead ends: 7113 [2024-10-31 17:25:03,713 INFO L226 Difference]: Without dead ends: 3771 [2024-10-31 17:25:03,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:03,717 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:03,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 262 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:25:03,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3771 states. [2024-10-31 17:25:03,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3771 to 3771. [2024-10-31 17:25:03,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3771 states, 3770 states have (on average 1.3196286472148542) internal successors, (4975), 3770 states have internal predecessors, (4975), 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) [2024-10-31 17:25:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3771 states to 3771 states and 4975 transitions. [2024-10-31 17:25:03,767 INFO L78 Accepts]: Start accepts. Automaton has 3771 states and 4975 transitions. Word has length 402 [2024-10-31 17:25:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:03,767 INFO L471 AbstractCegarLoop]: Abstraction has 3771 states and 4975 transitions. [2024-10-31 17:25:03,767 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) [2024-10-31 17:25:03,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3771 states and 4975 transitions. [2024-10-31 17:25:03,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-10-31 17:25:03,771 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:03,771 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 9, 9, 9, 7, 6, 6, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 17:25:03,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-31 17:25:03,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:03,972 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:03,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:03,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1646161403, now seen corresponding path program 1 times [2024-10-31 17:25:03,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:03,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638887580] [2024-10-31 17:25:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:03,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:03,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:03,974 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:03,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-31 17:25:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:04,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:25:04,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2024-10-31 17:25:04,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 1162 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2024-10-31 17:25:04,171 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:04,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638887580] [2024-10-31 17:25:04,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1638887580] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:25:04,171 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:25:04,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:25:04,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545210255] [2024-10-31 17:25:04,171 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:25:04,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:25:04,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:04,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:25:04,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:04,173 INFO L87 Difference]: Start difference. First operand 3771 states and 4975 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2024-10-31 17:25:04,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:04,305 INFO L93 Difference]: Finished difference Result 7509 states and 9907 transitions. [2024-10-31 17:25:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:25:04,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 433 [2024-10-31 17:25:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:04,317 INFO L225 Difference]: With dead ends: 7509 [2024-10-31 17:25:04,317 INFO L226 Difference]: Without dead ends: 3759 [2024-10-31 17:25:04,320 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 864 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:04,320 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 9 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:04,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 262 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:25:04,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2024-10-31 17:25:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3309. [2024-10-31 17:25:04,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3308 states have (on average 1.2681378476420797) internal successors, (4195), 3308 states have internal predecessors, (4195), 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) [2024-10-31 17:25:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4195 transitions. [2024-10-31 17:25:04,361 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4195 transitions. Word has length 433 [2024-10-31 17:25:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:04,361 INFO L471 AbstractCegarLoop]: Abstraction has 3309 states and 4195 transitions. [2024-10-31 17:25:04,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2024-10-31 17:25:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4195 transitions. [2024-10-31 17:25:04,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2024-10-31 17:25:04,365 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:04,365 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 12, 12, 11, 11, 10, 10, 10, 10, 8, 7, 7, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 17:25:04,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-31 17:25:04,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:04,566 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:04,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:04,566 INFO L85 PathProgramCache]: Analyzing trace with hash 912404788, now seen corresponding path program 1 times [2024-10-31 17:25:04,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:04,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002696371] [2024-10-31 17:25:04,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:04,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:04,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:04,568 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:04,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-31 17:25:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:04,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 17:25:04,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 1351 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-10-31 17:25:04,718 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:04,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2331 backedges. 1351 proven. 0 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-10-31 17:25:04,757 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:04,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002696371] [2024-10-31 17:25:04,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2002696371] provided 2 perfect and 0 imperfect interpolant sequences [2024-10-31 17:25:04,757 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-10-31 17:25:04,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-10-31 17:25:04,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657313619] [2024-10-31 17:25:04,757 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-10-31 17:25:04,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 17:25:04,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:04,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 17:25:04,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:04,759 INFO L87 Difference]: Start difference. First operand 3309 states and 4195 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-10-31 17:25:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:04,920 INFO L93 Difference]: Finished difference Result 6417 states and 8093 transitions. [2024-10-31 17:25:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 17:25:04,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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 466 [2024-10-31 17:25:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:04,927 INFO L225 Difference]: With dead ends: 6417 [2024-10-31 17:25:04,927 INFO L226 Difference]: Without dead ends: 3129 [2024-10-31 17:25:04,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 17:25:04,929 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 13 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:04,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 261 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 17:25:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3129 states. [2024-10-31 17:25:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3129 to 3117. [2024-10-31 17:25:04,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3116 states have (on average 1.2102053915275994) internal successors, (3771), 3116 states have internal predecessors, (3771), 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) [2024-10-31 17:25:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 3771 transitions. [2024-10-31 17:25:04,959 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 3771 transitions. Word has length 466 [2024-10-31 17:25:04,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:04,959 INFO L471 AbstractCegarLoop]: Abstraction has 3117 states and 3771 transitions. [2024-10-31 17:25:04,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 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) [2024-10-31 17:25:04,959 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 3771 transitions. [2024-10-31 17:25:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-10-31 17:25:04,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 17:25:04,963 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 13, 13, 12, 12, 11, 11, 11, 11, 9, 8, 8, 7, 7, 6, 6, 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, 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] [2024-10-31 17:25:04,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-10-31 17:25:05,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:05,163 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 17:25:05,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 17:25:05,164 INFO L85 PathProgramCache]: Analyzing trace with hash 325769247, now seen corresponding path program 1 times [2024-10-31 17:25:05,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-10-31 17:25:05,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111338512] [2024-10-31 17:25:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 17:25:05,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:05,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-31 17:25:05,165 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 17:25:05,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-31 17:25:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 17:25:05,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 17:25:05,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 17:25:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2024-10-31 17:25:05,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 17:25:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2727 backedges. 1308 proven. 26 refuted. 0 times theorem prover too weak. 1393 trivial. 0 not checked. [2024-10-31 17:25:05,406 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-10-31 17:25:05,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111338512] [2024-10-31 17:25:05,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1111338512] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 17:25:05,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 17:25:05,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-10-31 17:25:05,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479545154] [2024-10-31 17:25:05,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 17:25:05,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 17:25:05,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-10-31 17:25:05,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 17:25:05,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 17:25:05,407 INFO L87 Difference]: Start difference. First operand 3117 states and 3771 transitions. Second operand has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2024-10-31 17:25:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 17:25:05,662 INFO L93 Difference]: Finished difference Result 4438 states and 5392 transitions. [2024-10-31 17:25:05,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 17:25:05,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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 504 [2024-10-31 17:25:05,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 17:25:05,664 INFO L225 Difference]: With dead ends: 4438 [2024-10-31 17:25:05,664 INFO L226 Difference]: Without dead ends: 0 [2024-10-31 17:25:05,666 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 1005 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-10-31 17:25:05,667 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 154 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 17:25:05,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 488 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 17:25:05,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-31 17:25:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-31 17:25:05,667 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) [2024-10-31 17:25:05,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-31 17:25:05,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 504 [2024-10-31 17:25:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 17:25:05,668 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-31 17:25:05,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 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) [2024-10-31 17:25:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-31 17:25:05,668 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-31 17:25:05,670 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 17:25:05,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-31 17:25:05,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 17:25:05,877 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, 1, 1, 1] [2024-10-31 17:25:05,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-31 17:25:06,601 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 17:25:06,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 05:25:06 BoogieIcfgContainer [2024-10-31 17:25:06,615 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 17:25:06,616 INFO L158 Benchmark]: Toolchain (without parser) took 13975.75ms. Allocated memory was 216.0MB in the beginning and 420.5MB in the end (delta: 204.5MB). Free memory was 190.7MB in the beginning and 242.3MB in the end (delta: -51.6MB). Peak memory consumption was 209.5MB. Max. memory is 8.0GB. [2024-10-31 17:25:06,616 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory was 191.7MB in the beginning and 191.5MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. [2024-10-31 17:25:06,616 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.14ms. Allocated memory is still 216.0MB. Free memory was 190.2MB in the beginning and 171.9MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2024-10-31 17:25:06,616 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.61ms. Allocated memory is still 216.0MB. Free memory was 171.9MB in the beginning and 169.2MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-10-31 17:25:06,616 INFO L158 Benchmark]: Boogie Preprocessor took 54.85ms. Allocated memory is still 216.0MB. Free memory was 169.2MB in the beginning and 166.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2024-10-31 17:25:06,617 INFO L158 Benchmark]: RCFGBuilder took 622.61ms. Allocated memory is still 216.0MB. Free memory was 166.1MB in the beginning and 168.0MB in the end (delta: -1.9MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB. [2024-10-31 17:25:06,617 INFO L158 Benchmark]: TraceAbstraction took 12943.63ms. Allocated memory was 216.0MB in the beginning and 420.5MB in the end (delta: 204.5MB). Free memory was 167.5MB in the beginning and 242.3MB in the end (delta: -74.8MB). Peak memory consumption was 185.8MB. Max. memory is 8.0GB. [2024-10-31 17:25:06,618 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 216.0MB. Free memory was 191.7MB in the beginning and 191.5MB in the end (delta: 153.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.14ms. Allocated memory is still 216.0MB. Free memory was 190.2MB in the beginning and 171.9MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.61ms. Allocated memory is still 216.0MB. Free memory was 171.9MB in the beginning and 169.2MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 54.85ms. Allocated memory is still 216.0MB. Free memory was 169.2MB in the beginning and 166.1MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 622.61ms. Allocated memory is still 216.0MB. Free memory was 166.1MB in the beginning and 168.0MB in the end (delta: -1.9MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB. * TraceAbstraction took 12943.63ms. Allocated memory was 216.0MB in the beginning and 420.5MB in the end (delta: 204.5MB). Free memory was 167.5MB in the beginning and 242.3MB in the end (delta: -74.8MB). Peak memory consumption was 185.8MB. 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: 678]: 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: 12.2s, OverallIterations: 22, TraceHistogramMax: 16, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1130 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1130 mSDsluCounter, 7190 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2966 mSDsCounter, 367 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2350 IncrementalHoareTripleChecker+Invalid, 2717 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 367 mSolverCounterUnsat, 4224 mSDtfsCounter, 2350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10764 GetRequests, 10731 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3771occurred in iteration=19, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 2242 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 5400 NumberOfCodeBlocks, 5400 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 10756 ConstructedInterpolants, 0 QuantifiedInterpolants, 14719 SizeOfPredicates, 2 NumberOfNonLiveVariables, 6191 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 44 InterpolantComputations, 40 PerfectInterpolantSequences, 35446/35550 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: 109]: Loop Invariant Derived loop invariant: ((((((((((((((((((((blastFlag == 2) && (8466 == s__state)) && (s__s3__tmp__next_state___0 != 8640)) || ((blastFlag == 2) && (8512 == s__state))) || (((8448 == s__state) && (blastFlag == 2)) && (s__s3__tmp__next_state___0 == 8576))) || ((blastFlag != 4) && (0 != s__hit))) || ((blastFlag == 2) && (8560 == s__state))) || (((blastFlag == 2) && (s__s3__tmp__next_state___0 != 8640)) && (8592 == s__state))) || (((8448 == s__state) && (s__s3__tmp__next_state___0 == 3)) && (blastFlag == 3))) || ((blastFlag == 0) && (8464 == s__state))) || ((8672 == s__state) && (blastFlag == 3))) || ((blastFlag == 2) && (8640 == s__state))) || ((blastFlag == 1) && (8496 == s__state))) || (((blastFlag == 2) && (8608 == s__state)) && (s__s3__tmp__next_state___0 != 8640))) || (3 == s__state)) || ((blastFlag == 2) && (8544 == s__state))) || (((blastFlag == 2) && (s__s3__tmp__next_state___0 != 8640)) && (8496 == s__state))) || ((blastFlag == 2) && (8528 == s__state))) || (((blastFlag == 2) && (s__s3__tmp__next_state___0 == 8576)) && (8576 == s__state))) || ((blastFlag == 2) && (8656 == s__state))) RESULT: Ultimate proved your program to be correct! [2024-10-31 17:25:06,645 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...