/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-15.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 22:04:20,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 22:04:20,834 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 22:04:20,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 22:04:20,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 22:04:20,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 22:04:20,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 22:04:20,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 22:04:20,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 22:04:20,859 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 22:04:20,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 22:04:20,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 22:04:20,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 22:04:20,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 22:04:20,861 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 22:04:20,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 22:04:20,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 22:04:20,862 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 22:04:20,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 22:04:20,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 22:04:20,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 22:04:20,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 22:04:20,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 22:04:20,867 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 22:04:20,867 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 22:04:20,867 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 22:04:20,868 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 22:04:20,868 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 22:04:20,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 22:04:20,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 22:04:20,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 22:04:20,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 22:04:20,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:04:20,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 22:04:20,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 22:04:20,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 22:04:20,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 22:04:20,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 22:04:20,871 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 22:04:20,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 22:04:20,871 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 22:04:20,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 22:04:20,875 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 22:04:20,875 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 22:04:21,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 22:04:21,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 22:04:21,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 22:04:21,153 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 22:04:21,153 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 22:04:21,154 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-15.i [2023-12-20 22:04:22,323 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 22:04:22,531 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 22:04:22,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-15.i [2023-12-20 22:04:22,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8576a889/97db23c287324d73ae7df6f603331935/FLAGb294377cb [2023-12-20 22:04:22,553 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8576a889/97db23c287324d73ae7df6f603331935 [2023-12-20 22:04:22,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 22:04:22,556 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 22:04:22,557 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 22:04:22,557 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 22:04:22,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 22:04:22,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37a7db35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22, skipping insertion in model container [2023-12-20 22:04:22,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,597 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 22:04:22,743 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-15.i[916,929] [2023-12-20 22:04:22,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:04:22,783 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 22:04:22,794 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-15.i[916,929] [2023-12-20 22:04:22,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 22:04:22,827 INFO L206 MainTranslator]: Completed translation [2023-12-20 22:04:22,828 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22 WrapperNode [2023-12-20 22:04:22,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 22:04:22,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 22:04:22,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 22:04:22,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 22:04:22,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,839 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,861 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 109 [2023-12-20 22:04:22,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 22:04:22,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 22:04:22,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 22:04:22,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 22:04:22,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,874 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,885 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]. [2023-12-20 22:04:22,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,886 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,890 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,895 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,897 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 22:04:22,898 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 22:04:22,898 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 22:04:22,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 22:04:22,899 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (1/1) ... [2023-12-20 22:04:22,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 22:04:22,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:04:22,925 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) [2023-12-20 22:04:22,953 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 [2023-12-20 22:04:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 22:04:22,962 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 22:04:22,962 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 22:04:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 22:04:22,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 22:04:22,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 22:04:23,029 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 22:04:23,031 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 22:04:23,259 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 22:04:23,296 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 22:04:23,296 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 22:04:23,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:04:23 BoogieIcfgContainer [2023-12-20 22:04:23,296 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 22:04:23,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 22:04:23,299 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 22:04:23,302 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 22:04:23,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 10:04:22" (1/3) ... [2023-12-20 22:04:23,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e60b2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:04:23, skipping insertion in model container [2023-12-20 22:04:23,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 10:04:22" (2/3) ... [2023-12-20 22:04:23,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e60b2bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 10:04:23, skipping insertion in model container [2023-12-20 22:04:23,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 10:04:23" (3/3) ... [2023-12-20 22:04:23,304 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-15.i [2023-12-20 22:04:23,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 22:04:23,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 22:04:23,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 22:04:23,407 INFO L357 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, mHoare=true, 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;@464511ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 22:04:23,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 22:04:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-20 22:04:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 22:04:23,430 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:23,431 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:23,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:23,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1355226166, now seen corresponding path program 1 times [2023-12-20 22:04:23,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:23,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546644680] [2023-12-20 22:04:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:23,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:04:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:04:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:04:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:04:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:04:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:04:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:04:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:04:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:04:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:04:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:04:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:04:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:04:23,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:04:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:04:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:04:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:23,747 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:04:23,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:04:23,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546644680] [2023-12-20 22:04:23,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546644680] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:04:23,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:04:23,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 22:04:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337764960] [2023-12-20 22:04:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:04:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 22:04:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:04:23,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 22:04:23,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:04:23,785 INFO L87 Difference]: Start difference. First operand has 44 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 22:04:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:04:23,839 INFO L93 Difference]: Finished difference Result 85 states and 150 transitions. [2023-12-20 22:04:23,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 22:04:23,841 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2023-12-20 22:04:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:04:23,849 INFO L225 Difference]: With dead ends: 85 [2023-12-20 22:04:23,849 INFO L226 Difference]: Without dead ends: 42 [2023-12-20 22:04:23,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 22:04:23,855 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:04:23,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:04:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-12-20 22:04:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-12-20 22:04:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-20 22:04:23,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2023-12-20 22:04:23,915 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 62 transitions. Word has length 98 [2023-12-20 22:04:23,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:04:23,917 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 62 transitions. [2023-12-20 22:04:23,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 22:04:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 62 transitions. [2023-12-20 22:04:23,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 22:04:23,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:23,924 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:23,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 22:04:23,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:23,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash 549848010, now seen corresponding path program 1 times [2023-12-20 22:04:23,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:23,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372169742] [2023-12-20 22:04:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:23,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:04:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:04:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:04:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:04:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:04:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:04:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:04:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:04:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:04:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:04:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:04:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:04:24,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:04:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:04:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:04:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:04:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:04:24,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:04:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372169742] [2023-12-20 22:04:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372169742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:04:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:04:24,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 22:04:24,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709998925] [2023-12-20 22:04:24,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:04:24,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 22:04:24,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:04:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 22:04:24,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 22:04:24,541 INFO L87 Difference]: Start difference. First operand 42 states and 62 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:04:24,605 INFO L93 Difference]: Finished difference Result 95 states and 139 transitions. [2023-12-20 22:04:24,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 22:04:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-20 22:04:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:04:24,609 INFO L225 Difference]: With dead ends: 95 [2023-12-20 22:04:24,609 INFO L226 Difference]: Without dead ends: 54 [2023-12-20 22:04:24,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 22:04:24,612 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 11 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:04:24,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 168 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:04:24,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-20 22:04:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 45. [2023-12-20 22:04:24,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-20 22:04:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2023-12-20 22:04:24,637 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 98 [2023-12-20 22:04:24,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:04:24,642 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2023-12-20 22:04:24,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:24,642 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2023-12-20 22:04:24,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 22:04:24,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:24,644 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:24,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 22:04:24,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:24,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:24,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1515508746, now seen corresponding path program 1 times [2023-12-20 22:04:24,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:24,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969483176] [2023-12-20 22:04:24,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:24,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:04:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:04:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:04:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:04:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:04:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:04:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:04:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:04:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:04:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:04:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:04:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:04:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:04:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:04:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:04:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:04:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:24,822 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:04:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:04:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969483176] [2023-12-20 22:04:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969483176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:04:24,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:04:24,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:04:24,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429870942] [2023-12-20 22:04:24,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:04:24,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:04:24,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:04:24,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:04:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:04:24,830 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:24,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:04:24,877 INFO L93 Difference]: Finished difference Result 131 states and 191 transitions. [2023-12-20 22:04:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:04:24,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 98 [2023-12-20 22:04:24,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:04:24,882 INFO L225 Difference]: With dead ends: 131 [2023-12-20 22:04:24,882 INFO L226 Difference]: Without dead ends: 87 [2023-12-20 22:04:24,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:04:24,887 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 31 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:04:24,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 123 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:04:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-20 22:04:24,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2023-12-20 22:04:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:04:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 124 transitions. [2023-12-20 22:04:24,911 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 124 transitions. Word has length 98 [2023-12-20 22:04:24,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:04:24,912 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 124 transitions. [2023-12-20 22:04:24,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:24,912 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 124 transitions. [2023-12-20 22:04:24,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 22:04:24,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:24,918 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:24,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 22:04:24,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:24,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:24,919 INFO L85 PathProgramCache]: Analyzing trace with hash -543822701, now seen corresponding path program 1 times [2023-12-20 22:04:24,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:24,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249342452] [2023-12-20 22:04:24,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:04:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:04:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:04:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:04:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:04:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:04:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:04:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:04:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:04:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:04:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:04:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:04:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:04:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:04:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:04:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:04:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:04:30,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:04:30,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249342452] [2023-12-20 22:04:30,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249342452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:04:30,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:04:30,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 22:04:30,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198438435] [2023-12-20 22:04:30,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:04:30,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 22:04:30,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:04:30,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 22:04:30,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-20 22:04:30,864 INFO L87 Difference]: Start difference. First operand 84 states and 124 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:31,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:04:31,825 INFO L93 Difference]: Finished difference Result 102 states and 144 transitions. [2023-12-20 22:04:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 22:04:31,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-20 22:04:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:04:31,827 INFO L225 Difference]: With dead ends: 102 [2023-12-20 22:04:31,827 INFO L226 Difference]: Without dead ends: 100 [2023-12-20 22:04:31,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-20 22:04:31,828 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 28 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 22:04:31,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 195 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 22:04:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-20 22:04:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2023-12-20 22:04:31,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:04:31,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 131 transitions. [2023-12-20 22:04:31,840 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 131 transitions. Word has length 99 [2023-12-20 22:04:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:04:31,841 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 131 transitions. [2023-12-20 22:04:31,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 131 transitions. [2023-12-20 22:04:31,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 22:04:31,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:31,842 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:31,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 22:04:31,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:31,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:31,843 INFO L85 PathProgramCache]: Analyzing trace with hash 136235669, now seen corresponding path program 1 times [2023-12-20 22:04:31,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:31,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516425978] [2023-12-20 22:04:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:31,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:04:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:04:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:04:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:04:31,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:04:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:04:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:04:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:04:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:04:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:04:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:04:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:04:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:04:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:04:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:04:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:04:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:04:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:04:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516425978] [2023-12-20 22:04:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516425978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:04:31,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:04:31,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 22:04:31,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893452105] [2023-12-20 22:04:31,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:04:31,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 22:04:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:04:31,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 22:04:31,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:04:31,931 INFO L87 Difference]: Start difference. First operand 90 states and 131 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:31,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:04:31,958 INFO L93 Difference]: Finished difference Result 147 states and 210 transitions. [2023-12-20 22:04:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 22:04:31,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-20 22:04:31,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:04:31,962 INFO L225 Difference]: With dead ends: 147 [2023-12-20 22:04:31,962 INFO L226 Difference]: Without dead ends: 97 [2023-12-20 22:04:31,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 22:04:31,966 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 14 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 22:04:31,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 118 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 22:04:31,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-20 22:04:31,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2023-12-20 22:04:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:04:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 127 transitions. [2023-12-20 22:04:31,994 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 127 transitions. Word has length 99 [2023-12-20 22:04:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:04:31,994 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 127 transitions. [2023-12-20 22:04:31,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 127 transitions. [2023-12-20 22:04:31,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-20 22:04:31,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:31,996 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:31,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 22:04:31,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:31,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:31,998 INFO L85 PathProgramCache]: Analyzing trace with hash -673110957, now seen corresponding path program 1 times [2023-12-20 22:04:31,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:31,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936950538] [2023-12-20 22:04:31,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:31,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:04:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:04:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:04:32,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:04:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:04:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:04:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:04:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:04:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:04:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:04:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:04:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:04:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:04:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:04:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:04:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:04:32,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:04:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:04:32,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:04:32,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936950538] [2023-12-20 22:04:32,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936950538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:04:32,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:04:32,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 22:04:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912599027] [2023-12-20 22:04:32,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:04:32,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 22:04:32,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:04:32,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 22:04:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-20 22:04:32,919 INFO L87 Difference]: Start difference. First operand 88 states and 127 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:33,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:04:33,334 INFO L93 Difference]: Finished difference Result 99 states and 137 transitions. [2023-12-20 22:04:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-20 22:04:33,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 99 [2023-12-20 22:04:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:04:33,336 INFO L225 Difference]: With dead ends: 99 [2023-12-20 22:04:33,336 INFO L226 Difference]: Without dead ends: 97 [2023-12-20 22:04:33,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-20 22:04:33,337 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 48 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:04:33,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 236 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:04:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-20 22:04:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2023-12-20 22:04:33,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:04:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 130 transitions. [2023-12-20 22:04:33,346 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 130 transitions. Word has length 99 [2023-12-20 22:04:33,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:04:33,347 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 130 transitions. [2023-12-20 22:04:33,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:04:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 130 transitions. [2023-12-20 22:04:33,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 22:04:33,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:04:33,350 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:04:33,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 22:04:33,351 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:04:33,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:04:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash 81127969, now seen corresponding path program 1 times [2023-12-20 22:04:33,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:04:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133252130] [2023-12-20 22:04:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:04:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:04:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:05:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:05:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:05:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:05:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:05:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:05:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:05:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:05:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:05:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:05:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:05:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:05:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:29,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:05:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:05:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:05:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:30,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:05:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:05:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:05:30,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:05:30,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133252130] [2023-12-20 22:05:30,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133252130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:05:30,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:05:30,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-20 22:05:30,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530173038] [2023-12-20 22:05:30,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:05:30,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 22:05:30,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:05:30,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 22:05:30,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-20 22:05:30,097 INFO L87 Difference]: Start difference. First operand 91 states and 130 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-20 22:05:43,284 WARN L293 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 187 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:05:54,178 WARN L293 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 179 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-20 22:06:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:06:12,427 INFO L93 Difference]: Finished difference Result 117 states and 157 transitions. [2023-12-20 22:06:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 22:06:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 100 [2023-12-20 22:06:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:06:12,428 INFO L225 Difference]: With dead ends: 117 [2023-12-20 22:06:12,428 INFO L226 Difference]: Without dead ends: 115 [2023-12-20 22:06:12,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2023-12-20 22:06:12,429 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 171 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 22:06:12,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 312 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 22:06:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-20 22:06:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2023-12-20 22:06:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:06:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 137 transitions. [2023-12-20 22:06:12,439 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 137 transitions. Word has length 100 [2023-12-20 22:06:12,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:06:12,440 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 137 transitions. [2023-12-20 22:06:12,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 3 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-20 22:06:12,440 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 137 transitions. [2023-12-20 22:06:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 22:06:12,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:06:12,441 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:06:12,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 22:06:12,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:06:12,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:06:12,442 INFO L85 PathProgramCache]: Analyzing trace with hash 79280927, now seen corresponding path program 1 times [2023-12-20 22:06:12,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:06:12,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655095124] [2023-12-20 22:06:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:06:12,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:06:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:06:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:06:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:06:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:06:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:06:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:06:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:06:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:06:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:06:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:06:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:06:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:06:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:06:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:06:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:06:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:06:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:20,202 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:06:20,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:06:20,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655095124] [2023-12-20 22:06:20,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655095124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:06:20,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:06:20,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-20 22:06:20,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319895367] [2023-12-20 22:06:20,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:06:20,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 22:06:20,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:06:20,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 22:06:20,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-20 22:06:20,205 INFO L87 Difference]: Start difference. First operand 96 states and 137 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 22:06:21,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:06:21,856 INFO L93 Difference]: Finished difference Result 116 states and 158 transitions. [2023-12-20 22:06:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 22:06:21,857 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 100 [2023-12-20 22:06:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:06:21,858 INFO L225 Difference]: With dead ends: 116 [2023-12-20 22:06:21,858 INFO L226 Difference]: Without dead ends: 114 [2023-12-20 22:06:21,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-12-20 22:06:21,859 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 89 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 22:06:21,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 188 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 22:06:21,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-20 22:06:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2023-12-20 22:06:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 62 states have internal predecessors, (75), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:06:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2023-12-20 22:06:21,872 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 100 [2023-12-20 22:06:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:06:21,873 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2023-12-20 22:06:21,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 22:06:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2023-12-20 22:06:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 22:06:21,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:06:21,874 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:06:21,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 22:06:21,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:06:21,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:06:21,875 INFO L85 PathProgramCache]: Analyzing trace with hash 368159329, now seen corresponding path program 1 times [2023-12-20 22:06:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:06:21,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496927330] [2023-12-20 22:06:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:06:21,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:06:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:06:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:06:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:06:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:06:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:06:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:06:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:06:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:06:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:06:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:06:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:06:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:06:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:06:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:06:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:06:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:06:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:06:22,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:06:22,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496927330] [2023-12-20 22:06:22,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496927330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:06:22,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:06:22,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 22:06:22,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480380340] [2023-12-20 22:06:22,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:06:22,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 22:06:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:06:22,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 22:06:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 22:06:22,816 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:06:23,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:06:23,191 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2023-12-20 22:06:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 22:06:23,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 100 [2023-12-20 22:06:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:06:23,192 INFO L225 Difference]: With dead ends: 109 [2023-12-20 22:06:23,192 INFO L226 Difference]: Without dead ends: 107 [2023-12-20 22:06:23,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-12-20 22:06:23,193 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 51 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 22:06:23,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 214 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 22:06:23,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-20 22:06:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2023-12-20 22:06:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 62 states have internal predecessors, (75), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:06:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2023-12-20 22:06:23,207 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 100 [2023-12-20 22:06:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:06:23,207 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2023-12-20 22:06:23,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:06:23,207 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2023-12-20 22:06:23,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-20 22:06:23,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:06:23,208 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:06:23,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 22:06:23,209 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:06:23,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:06:23,209 INFO L85 PathProgramCache]: Analyzing trace with hash 366312287, now seen corresponding path program 1 times [2023-12-20 22:06:23,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:06:23,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553476938] [2023-12-20 22:06:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:06:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:06:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:06:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:06:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:06:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:06:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:06:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:06:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:06:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:06:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:06:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:06:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:06:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:06:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:06:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:06:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:06:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:06:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2023-12-20 22:06:24,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:06:24,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553476938] [2023-12-20 22:06:24,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553476938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:06:24,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:06:24,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-20 22:06:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457714432] [2023-12-20 22:06:24,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:06:24,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 22:06:24,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:06:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 22:06:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-20 22:06:24,389 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:06:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:06:24,912 INFO L93 Difference]: Finished difference Result 105 states and 146 transitions. [2023-12-20 22:06:24,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 22:06:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 100 [2023-12-20 22:06:24,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:06:24,914 INFO L225 Difference]: With dead ends: 105 [2023-12-20 22:06:24,914 INFO L226 Difference]: Without dead ends: 103 [2023-12-20 22:06:24,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-20 22:06:24,915 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 53 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 22:06:24,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 228 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 22:06:24,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-12-20 22:06:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2023-12-20 22:06:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:06:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 135 transitions. [2023-12-20 22:06:24,926 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 135 transitions. Word has length 100 [2023-12-20 22:06:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:06:24,927 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 135 transitions. [2023-12-20 22:06:24,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:06:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 135 transitions. [2023-12-20 22:06:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-20 22:06:24,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:06:24,929 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:06:24,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 22:06:24,929 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:06:24,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:06:24,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1088490459, now seen corresponding path program 1 times [2023-12-20 22:06:24,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:06:24,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545255676] [2023-12-20 22:06:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:06:24,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:06:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:06:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:06:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:06:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:06:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:06:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:06:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:06:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:06:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:06:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:06:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:06:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:06:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:06:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:06:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:06:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:06:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 22:06:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 22:06:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-20 22:06:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-20 22:06:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 22:06:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 22:06:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 22:06:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 22:06:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 22:06:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-20 22:06:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 22:06:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 22:06:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-20 22:06:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-20 22:06:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 22:06:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 22:06:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2010 trivial. 0 not checked. [2023-12-20 22:06:26,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:06:26,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545255676] [2023-12-20 22:06:26,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545255676] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 22:06:26,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 22:06:26,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 22:06:26,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585381109] [2023-12-20 22:06:26,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 22:06:26,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 22:06:26,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 22:06:26,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 22:06:26,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 22:06:26,115 INFO L87 Difference]: Start difference. First operand 94 states and 135 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:06:26,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 22:06:26,289 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2023-12-20 22:06:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 22:06:26,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 196 [2023-12-20 22:06:26,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 22:06:26,291 INFO L225 Difference]: With dead ends: 109 [2023-12-20 22:06:26,291 INFO L226 Difference]: Without dead ends: 107 [2023-12-20 22:06:26,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-12-20 22:06:26,292 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 17 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 22:06:26,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 215 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 22:06:26,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-20 22:06:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 94. [2023-12-20 22:06:26,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 59 states have internal predecessors, (71), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-12-20 22:06:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 135 transitions. [2023-12-20 22:06:26,304 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 135 transitions. Word has length 196 [2023-12-20 22:06:26,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 22:06:26,305 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 135 transitions. [2023-12-20 22:06:26,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 22:06:26,305 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 135 transitions. [2023-12-20 22:06:26,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-20 22:06:26,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 22:06:26,307 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:06:26,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 22:06:26,307 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 22:06:26,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 22:06:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash 207292312, now seen corresponding path program 1 times [2023-12-20 22:06:26,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 22:06:26,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349998297] [2023-12-20 22:06:26,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:06:26,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 22:06:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-20 22:06:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-20 22:06:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-20 22:06:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-20 22:06:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-20 22:06:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 22:06:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 22:06:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 22:06:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 22:06:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-20 22:06:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 22:06:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 22:06:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 22:06:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 22:06:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 22:06:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 22:06:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 22:06:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 22:06:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-20 22:06:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-20 22:06:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 22:06:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 22:06:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 22:06:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 22:06:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 22:06:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-20 22:06:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 22:06:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 22:06:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-20 22:06:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-20 22:06:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 22:06:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 22:06:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2023-12-20 22:06:27,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 22:06:27,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349998297] [2023-12-20 22:06:27,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349998297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 22:06:27,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550842932] [2023-12-20 22:06:27,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 22:06:27,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 22:06:27,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 22:06:27,748 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) [2023-12-20 22:06:27,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 22:06:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 22:06:27,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 22:06:27,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-20 22:18:28,602 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 22:18:28,607 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 22:18:28,607 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 22:18:28,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 22:18:28,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-20 22:18:28,803 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 198 with TraceHistMax 32,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-30-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. [2023-12-20 22:18:28,808 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 22:18:28,810 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 22:18:28,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 10:18:28 BoogieIcfgContainer [2023-12-20 22:18:28,812 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 22:18:28,813 INFO L158 Benchmark]: Toolchain (without parser) took 846256.95ms. Allocated memory was 192.9MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 141.5MB in the beginning and 5.2GB in the end (delta: -5.0GB). Peak memory consumption was 5.4GB. Max. memory is 8.0GB. [2023-12-20 22:18:28,813 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 192.9MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 22:18:28,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.41ms. Allocated memory is still 192.9MB. Free memory was 141.5MB in the beginning and 129.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-20 22:18:28,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.50ms. Allocated memory is still 192.9MB. Free memory was 129.1MB in the beginning and 127.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 22:18:28,814 INFO L158 Benchmark]: Boogie Preprocessor took 35.23ms. Allocated memory is still 192.9MB. Free memory was 127.1MB in the beginning and 124.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-20 22:18:28,814 INFO L158 Benchmark]: RCFGBuilder took 398.77ms. Allocated memory is still 192.9MB. Free memory was 124.7MB in the beginning and 108.2MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-12-20 22:18:28,814 INFO L158 Benchmark]: TraceAbstraction took 845513.90ms. Allocated memory was 192.9MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 107.5MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 5.3GB. Max. memory is 8.0GB. [2023-12-20 22:18:28,815 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 192.9MB. Free memory is still 146.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 271.41ms. Allocated memory is still 192.9MB. Free memory was 141.5MB in the beginning and 129.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.50ms. Allocated memory is still 192.9MB. Free memory was 129.1MB in the beginning and 127.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.23ms. Allocated memory is still 192.9MB. Free memory was 127.1MB in the beginning and 124.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 398.77ms. Allocated memory is still 192.9MB. Free memory was 124.7MB in the beginning and 108.2MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 845513.90ms. Allocated memory was 192.9MB in the beginning and 7.3GB in the end (delta: 7.1GB). Free memory was 107.5MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 5.3GB. 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 - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 198 with TraceHistMax 32,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-30-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 845.4s, OverallIterations: 12, TraceHistogramMax: 32, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 46.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 513 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 513 mSDsluCounter, 2056 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1372 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1229 IncrementalHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 684 mSDtfsCounter, 1229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 523 GetRequests, 420 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 58.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=8, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 105 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 75.2s InterpolantComputationTime, 1187 NumberOfCodeBlocks, 1187 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1176 ConstructedInterpolants, 0 QuantifiedInterpolants, 10963 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 6816/6816 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown