/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 16:57:47,538 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 16:57:47,601 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 16:57:47,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 16:57:47,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 16:57:47,626 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 16:57:47,626 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 16:57:47,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 16:57:47,627 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 16:57:47,630 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 16:57:47,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 16:57:47,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 16:57:47,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 16:57:47,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 16:57:47,632 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 16:57:47,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 16:57:47,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 16:57:47,633 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 16:57:47,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 16:57:47,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 16:57:47,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 16:57:47,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 16:57:47,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 16:57:47,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 16:57:47,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 16:57:47,635 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 16:57:47,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 16:57:47,635 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 16:57:47,635 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 16:57:47,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 16:57:47,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 16:57:47,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 16:57:47,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 16:57:47,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 16:57:47,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 16:57:47,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 16:57:47,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 16:57:47,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 16:57:47,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 16:57:47,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 16:57:47,637 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 16:57:47,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 16:57:47,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 16:57:47,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 16:57:47,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 16:57:47,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 16:57:47,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 16:57:47,837 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 16:57:47,837 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 16:57:47,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i [2023-12-19 16:57:48,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 16:57:49,167 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 16:57:49,168 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i [2023-12-19 16:57:49,179 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866a5916f/a88236417e304ddda97a595771433751/FLAG5a468e7a7 [2023-12-19 16:57:49,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/866a5916f/a88236417e304ddda97a595771433751 [2023-12-19 16:57:49,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 16:57:49,193 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 16:57:49,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 16:57:49,195 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 16:57:49,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 16:57:49,199 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,200 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e128c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49, skipping insertion in model container [2023-12-19 16:57:49,200 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,238 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 16:57:49,494 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2023-12-19 16:57:49,499 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2023-12-19 16:57:49,499 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2023-12-19 16:57:49,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 16:57:49,527 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 16:57:49,558 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2023-12-19 16:57:49,559 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2023-12-19 16:57:49,559 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2023-12-19 16:57:49,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 16:57:49,606 INFO L206 MainTranslator]: Completed translation [2023-12-19 16:57:49,607 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49 WrapperNode [2023-12-19 16:57:49,607 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 16:57:49,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 16:57:49,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 16:57:49,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 16:57:49,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,642 INFO L138 Inliner]: procedures = 142, calls = 62, calls flagged for inlining = 15, calls inlined = 14, statements flattened = 186 [2023-12-19 16:57:49,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 16:57:49,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 16:57:49,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 16:57:49,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 16:57:49,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,683 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 4]. The 7 writes are split as follows [0, 7]. [2023-12-19 16:57:49,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 16:57:49,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 16:57:49,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 16:57:49,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 16:57:49,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (1/1) ... [2023-12-19 16:57:49,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 16:57:49,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:57:49,726 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) [2023-12-19 16:57:49,740 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 [2023-12-19 16:57:49,760 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-12-19 16:57:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-12-19 16:57:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-12-19 16:57:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-12-19 16:57:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-19 16:57:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 16:57:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-19 16:57:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-19 16:57:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-12-19 16:57:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-12-19 16:57:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-19 16:57:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-19 16:57:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-19 16:57:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-19 16:57:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-19 16:57:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 16:57:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-19 16:57:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-12-19 16:57:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-12-19 16:57:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 16:57:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 16:57:49,897 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 16:57:49,899 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 16:57:50,062 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 16:57:50,103 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 16:57:50,104 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-12-19 16:57:50,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:57:50 BoogieIcfgContainer [2023-12-19 16:57:50,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 16:57:50,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 16:57:50,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 16:57:50,108 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 16:57:50,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:57:49" (1/3) ... [2023-12-19 16:57:50,108 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f237623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:57:50, skipping insertion in model container [2023-12-19 16:57:50,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:57:49" (2/3) ... [2023-12-19 16:57:50,109 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f237623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:57:50, skipping insertion in model container [2023-12-19 16:57:50,109 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:57:50" (3/3) ... [2023-12-19 16:57:50,110 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2023-12-19 16:57:50,121 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 16:57:50,121 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-19 16:57:50,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 16:57:50,165 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;@1a3afb67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 16:57:50,166 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-19 16:57:50,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 40 states have (on average 1.5) internal successors, (60), 43 states have internal predecessors, (60), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:57:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 16:57:50,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:57:50,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:57:50,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:57:50,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:57:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash 16347161, now seen corresponding path program 1 times [2023-12-19 16:57:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:57:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357354858] [2023-12-19 16:57:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:57:50,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:57:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 16:57:50,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:57:50,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357354858] [2023-12-19 16:57:50,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357354858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:57:50,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:57:50,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 16:57:50,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65883374] [2023-12-19 16:57:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:57:50,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 16:57:50,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:57:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 16:57:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 16:57:50,379 INFO L87 Difference]: Start difference. First operand has 56 states, 40 states have (on average 1.5) internal successors, (60), 43 states have internal predecessors, (60), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 16:57:50,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:57:50,434 INFO L93 Difference]: Finished difference Result 111 states and 156 transitions. [2023-12-19 16:57:50,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 16:57:50,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-19 16:57:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:57:50,441 INFO L225 Difference]: With dead ends: 111 [2023-12-19 16:57:50,441 INFO L226 Difference]: Without dead ends: 54 [2023-12-19 16:57:50,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 16:57:50,447 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 16:57:50,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 16:57:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-12-19 16:57:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-12-19 16:57:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:57:50,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2023-12-19 16:57:50,479 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 9 [2023-12-19 16:57:50,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:57:50,480 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2023-12-19 16:57:50,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 16:57:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2023-12-19 16:57:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-19 16:57:50,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:57:50,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:57:50,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 16:57:50,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:57:50,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:57:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1510923330, now seen corresponding path program 1 times [2023-12-19 16:57:50,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:57:50,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117163163] [2023-12-19 16:57:50,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:57:50,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:57:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:50,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 16:57:50,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:57:50,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117163163] [2023-12-19 16:57:50,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117163163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:57:50,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:57:50,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 16:57:50,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753230544] [2023-12-19 16:57:50,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:57:50,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 16:57:50,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:57:50,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 16:57:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 16:57:50,647 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 16:57:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:57:50,810 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2023-12-19 16:57:50,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 16:57:50,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-12-19 16:57:50,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:57:50,813 INFO L225 Difference]: With dead ends: 101 [2023-12-19 16:57:50,813 INFO L226 Difference]: Without dead ends: 97 [2023-12-19 16:57:50,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:57:50,814 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:57:50,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 127 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:57:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-19 16:57:50,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2023-12-19 16:57:50,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 62 states have (on average 1.3064516129032258) internal successors, (81), 64 states have internal predecessors, (81), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-19 16:57:50,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2023-12-19 16:57:50,825 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 9 [2023-12-19 16:57:50,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:57:50,825 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2023-12-19 16:57:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 16:57:50,825 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2023-12-19 16:57:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-19 16:57:50,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:57:50,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:57:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 16:57:50,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:57:50,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:57:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1591337207, now seen corresponding path program 1 times [2023-12-19 16:57:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:57:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530992796] [2023-12-19 16:57:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:57:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:57:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-12-19 16:57:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 16:57:50,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:57:50,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530992796] [2023-12-19 16:57:50,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530992796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:57:50,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:57:50,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 16:57:50,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38561912] [2023-12-19 16:57:50,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:57:50,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 16:57:50,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:57:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 16:57:50,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 16:57:50,903 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 16:57:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:57:51,030 INFO L93 Difference]: Finished difference Result 141 states and 174 transitions. [2023-12-19 16:57:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 16:57:51,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-12-19 16:57:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:57:51,033 INFO L225 Difference]: With dead ends: 141 [2023-12-19 16:57:51,033 INFO L226 Difference]: Without dead ends: 65 [2023-12-19 16:57:51,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 16:57:51,036 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:57:51,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 135 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:57:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-19 16:57:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2023-12-19 16:57:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 46 states have internal predecessors, (53), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-19 16:57:51,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-12-19 16:57:51,049 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 13 [2023-12-19 16:57:51,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:57:51,049 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-12-19 16:57:51,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-19 16:57:51,049 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-12-19 16:57:51,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-19 16:57:51,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:57:51,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:57:51,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 16:57:51,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:57:51,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:57:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1651958428, now seen corresponding path program 1 times [2023-12-19 16:57:51,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:57:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42699980] [2023-12-19 16:57:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:57:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:57:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:51,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:57:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:57:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:57:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 16:57:51,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:57:51,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42699980] [2023-12-19 16:57:51,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42699980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:57:51,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:57:51,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-19 16:57:51,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423409277] [2023-12-19 16:57:51,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:57:51,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-19 16:57:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:57:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-19 16:57:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-19 16:57:51,708 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 14 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 16:57:52,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:57:52,330 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2023-12-19 16:57:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-19 16:57:52,331 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2023-12-19 16:57:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:57:52,332 INFO L225 Difference]: With dead ends: 157 [2023-12-19 16:57:52,332 INFO L226 Difference]: Without dead ends: 135 [2023-12-19 16:57:52,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2023-12-19 16:57:52,333 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 239 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 16:57:52,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 288 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 16:57:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-12-19 16:57:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 92. [2023-12-19 16:57:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 73 states have internal predecessors, (88), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-19 16:57:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2023-12-19 16:57:52,351 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 24 [2023-12-19 16:57:52,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:57:52,351 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2023-12-19 16:57:52,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-19 16:57:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2023-12-19 16:57:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 16:57:52,352 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:57:52,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:57:52,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 16:57:52,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:57:52,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:57:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash -349519591, now seen corresponding path program 1 times [2023-12-19 16:57:52,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:57:52,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311849566] [2023-12-19 16:57:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:57:52,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:57:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:57:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:52,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:57:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:52,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:57:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:52,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 16:57:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 16:57:52,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:57:52,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311849566] [2023-12-19 16:57:52,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311849566] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 16:57:52,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 16:57:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-19 16:57:52,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605656417] [2023-12-19 16:57:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 16:57:52,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-19 16:57:52,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:57:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-19 16:57:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 16:57:52,462 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-19 16:57:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:57:52,613 INFO L93 Difference]: Finished difference Result 102 states and 129 transitions. [2023-12-19 16:57:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 16:57:52,614 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2023-12-19 16:57:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:57:52,615 INFO L225 Difference]: With dead ends: 102 [2023-12-19 16:57:52,615 INFO L226 Difference]: Without dead ends: 100 [2023-12-19 16:57:52,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-19 16:57:52,617 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 23 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 16:57:52,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 165 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 16:57:52,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-19 16:57:52,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-19 16:57:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 79 states have internal predecessors, (94), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (19), 13 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-19 16:57:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 126 transitions. [2023-12-19 16:57:52,639 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 126 transitions. Word has length 28 [2023-12-19 16:57:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:57:52,639 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 126 transitions. [2023-12-19 16:57:52,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-19 16:57:52,641 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 126 transitions. [2023-12-19 16:57:52,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-19 16:57:52,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:57:52,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:57:52,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 16:57:52,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:57:52,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:57:52,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1225083714, now seen corresponding path program 1 times [2023-12-19 16:57:52,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:57:52,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693324472] [2023-12-19 16:57:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:57:52,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:57:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:53,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:57:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:53,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:57:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:53,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:57:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 16:57:53,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 16:57:53,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 16:57:53,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693324472] [2023-12-19 16:57:53,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693324472] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 16:57:53,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401399498] [2023-12-19 16:57:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:57:53,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 16:57:53,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 16:57:53,368 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) [2023-12-19 16:57:53,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 16:57:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:57:53,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 76 conjunts are in the unsatisfiable core [2023-12-19 16:57:53,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 16:57:53,742 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-19 16:57:53,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-12-19 16:57:54,253 INFO L349 Elim1Store]: treesize reduction 13, result has 56.7 percent of original size [2023-12-19 16:57:54,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 87 [2023-12-19 16:57:54,288 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 16:57:54,299 INFO L349 Elim1Store]: treesize reduction 25, result has 26.5 percent of original size [2023-12-19 16:57:54,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 101 [2023-12-19 16:57:54,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2023-12-19 16:57:54,318 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-12-19 16:57:54,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2023-12-19 16:57:54,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-12-19 16:57:54,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 16:57:54,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2023-12-19 16:57:54,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-12-19 16:57:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 16:57:54,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 16:57:54,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401399498] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 16:57:54,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 16:57:54,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2023-12-19 16:57:54,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123159170] [2023-12-19 16:57:54,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 16:57:54,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-19 16:57:54,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 16:57:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-19 16:57:54,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=926, Unknown=10, NotChecked=0, Total=1056 [2023-12-19 16:57:54,965 INFO L87 Difference]: Start difference. First operand 100 states and 126 transitions. Second operand has 30 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 23 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:57:59,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 16:58:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 16:58:01,130 INFO L93 Difference]: Finished difference Result 265 states and 346 transitions. [2023-12-19 16:58:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-19 16:58:01,131 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 23 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 28 [2023-12-19 16:58:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 16:58:01,132 INFO L225 Difference]: With dead ends: 265 [2023-12-19 16:58:01,132 INFO L226 Difference]: Without dead ends: 179 [2023-12-19 16:58:01,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=433, Invalid=2850, Unknown=23, NotChecked=0, Total=3306 [2023-12-19 16:58:01,134 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 229 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 87 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-12-19 16:58:01,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 441 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1085 Invalid, 14 Unknown, 0 Unchecked, 5.2s Time] [2023-12-19 16:58:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-19 16:58:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 142. [2023-12-19 16:58:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 108 states have (on average 1.2685185185185186) internal successors, (137), 112 states have internal predecessors, (137), 18 states have call successors, (18), 10 states have call predecessors, (18), 13 states have return successors, (25), 19 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-19 16:58:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 180 transitions. [2023-12-19 16:58:01,147 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 180 transitions. Word has length 28 [2023-12-19 16:58:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 16:58:01,147 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 180 transitions. [2023-12-19 16:58:01,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 23 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-19 16:58:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 180 transitions. [2023-12-19 16:58:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-19 16:58:01,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 16:58:01,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 16:58:01,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 16:58:01,354 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,SelfDestructingSolverStorable5 [2023-12-19 16:58:01,355 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 16:58:01,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 16:58:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash 708305632, now seen corresponding path program 2 times [2023-12-19 16:58:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 16:58:01,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146732217] [2023-12-19 16:58:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 16:58:01,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 16:58:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:58:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 16:58:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:58:02,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 16:58:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:58:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:58:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:58:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-19 16:58:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:58:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-12-19 16:58:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 16:58:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 16:58:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:07:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-19 17:07:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:07:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 17:07:42,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:07:42,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146732217] [2023-12-19 17:07:42,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146732217] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:07:42,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75549364] [2023-12-19 17:07:42,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-19 17:07:42,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:07:42,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:07:42,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:07:42,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 17:07:42,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-19 17:07:42,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-19 17:07:42,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 129 conjunts are in the unsatisfiable core [2023-12-19 17:07:42,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:07:42,720 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2023-12-19 17:07:42,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2023-12-19 17:07:43,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 59 [2023-12-19 17:07:43,330 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-12-19 17:07:43,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 154 treesize of output 110 [2023-12-19 17:07:43,365 INFO L349 Elim1Store]: treesize reduction 63, result has 32.3 percent of original size [2023-12-19 17:07:43,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 33 [2023-12-19 17:07:43,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-12-19 17:07:52,111 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-12-19 17:07:52,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-12-19 17:07:58,833 INFO L349 Elim1Store]: treesize reduction 147, result has 29.7 percent of original size [2023-12-19 17:07:58,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 80 treesize of output 157 [2023-12-19 17:07:58,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-12-19 17:07:58,866 INFO L349 Elim1Store]: treesize reduction 62, result has 7.5 percent of original size [2023-12-19 17:07:58,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 211 treesize of output 153 [2023-12-19 17:07:58,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:07:58,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 150 [2023-12-19 17:07:58,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-19 17:07:58,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-19 17:07:59,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-19 17:07:59,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 108 [2023-12-19 17:07:59,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-19 17:07:59,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 17 [2023-12-19 17:07:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 17:07:59,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:07:59,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75549364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:07:59,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-19 17:07:59,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 47 [2023-12-19 17:07:59,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524910801] [2023-12-19 17:07:59,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-19 17:07:59,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-19 17:07:59,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:07:59,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-19 17:07:59,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2208, Unknown=28, NotChecked=0, Total=2450 [2023-12-19 17:07:59,814 INFO L87 Difference]: Start difference. First operand 142 states and 180 transitions. Second operand has 47 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 36 states have internal predecessors, (55), 14 states have call successors, (14), 8 states have call predecessors, (14), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 17:08:04,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:08:08,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:08:20,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:08:24,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:08:28,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:08:32,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:08:36,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:08:52,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:08:56,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:09:01,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:09:06,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-19 17:09:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:09:31,447 INFO L93 Difference]: Finished difference Result 256 states and 326 transitions. [2023-12-19 17:09:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-19 17:09:31,447 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 36 states have internal predecessors, (55), 14 states have call successors, (14), 8 states have call predecessors, (14), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) Word has length 43 [2023-12-19 17:09:31,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:09:31,448 INFO L225 Difference]: With dead ends: 256 [2023-12-19 17:09:31,449 INFO L226 Difference]: Without dead ends: 170 [2023-12-19 17:09:31,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1422 ImplicationChecksByTransitivity, 58.7s TimeCoverageRelationStatistics Valid=545, Invalid=4793, Unknown=64, NotChecked=0, Total=5402 [2023-12-19 17:09:31,452 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 304 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 102 mSolverCounterUnsat, 78 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 78 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.9s IncrementalHoareTripleChecker+Time [2023-12-19 17:09:31,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 643 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1765 Invalid, 78 Unknown, 0 Unchecked, 51.9s Time] [2023-12-19 17:09:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-19 17:09:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 106. [2023-12-19 17:09:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 83 states have internal predecessors, (97), 14 states have call successors, (14), 9 states have call predecessors, (14), 11 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2023-12-19 17:09:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2023-12-19 17:09:31,464 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 43 [2023-12-19 17:09:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:09:31,464 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2023-12-19 17:09:31,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 36 states have internal predecessors, (55), 14 states have call successors, (14), 8 states have call predecessors, (14), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-19 17:09:31,464 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2023-12-19 17:09:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-19 17:09:31,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:09:31,465 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:09:31,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 17:09:31,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-19 17:09:31,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:09:31,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:09:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash 884473772, now seen corresponding path program 1 times [2023-12-19 17:09:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:09:31,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361243001] [2023-12-19 17:09:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:09:31,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:09:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 17:09:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 17:09:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:31,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 17:09:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 17:09:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 17:09:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 17:09:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-19 17:09:31,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:09:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361243001] [2023-12-19 17:09:31,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361243001] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:09:31,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231980678] [2023-12-19 17:09:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:09:31,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:09:31,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:09:31,786 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:09:31,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 17:09:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:31,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-19 17:09:31,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:09:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 17:09:31,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 17:09:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231980678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 17:09:31,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 17:09:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-19 17:09:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871409368] [2023-12-19 17:09:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 17:09:31,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 17:09:31,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:09:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 17:09:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 17:09:31,941 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-19 17:09:31,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:09:31,983 INFO L93 Difference]: Finished difference Result 198 states and 244 transitions. [2023-12-19 17:09:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 17:09:31,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2023-12-19 17:09:31,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:09:31,984 INFO L225 Difference]: With dead ends: 198 [2023-12-19 17:09:31,984 INFO L226 Difference]: Without dead ends: 112 [2023-12-19 17:09:31,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-19 17:09:31,985 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 17:09:31,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 17:09:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-19 17:09:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-19 17:09:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 87 states have internal predecessors, (102), 14 states have call successors, (14), 9 states have call predecessors, (14), 12 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2023-12-19 17:09:32,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2023-12-19 17:09:32,000 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 49 [2023-12-19 17:09:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:09:32,000 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2023-12-19 17:09:32,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-19 17:09:32,001 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2023-12-19 17:09:32,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-19 17:09:32,004 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:09:32,005 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:09:32,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 17:09:32,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:09:32,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:09:32,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:09:32,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1880069205, now seen corresponding path program 1 times [2023-12-19 17:09:32,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:09:32,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905109109] [2023-12-19 17:09:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:09:32,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:09:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 17:09:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 17:09:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 17:09:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:32,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 17:09:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:32,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 17:09:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:32,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-19 17:09:32,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-19 17:09:32,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 17:09:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905109109] [2023-12-19 17:09:32,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905109109] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 17:09:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372618144] [2023-12-19 17:09:32,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:09:32,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:09:32,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 17:09:32,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 17:09:32,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 17:09:32,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:32,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-19 17:09:32,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 17:09:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-19 17:09:32,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 17:09:33,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-12-19 17:09:33,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-12-19 17:09:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 17:09:33,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372618144] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 17:09:33,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 17:09:33,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-12-19 17:09:33,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417306213] [2023-12-19 17:09:33,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 17:09:33,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-19 17:09:33,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 17:09:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-19 17:09:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-19 17:09:33,120 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 20 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 5 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-19 17:09:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 17:09:33,782 INFO L93 Difference]: Finished difference Result 249 states and 302 transitions. [2023-12-19 17:09:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-19 17:09:33,782 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 5 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 49 [2023-12-19 17:09:33,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 17:09:33,783 INFO L225 Difference]: With dead ends: 249 [2023-12-19 17:09:33,783 INFO L226 Difference]: Without dead ends: 147 [2023-12-19 17:09:33,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 17:09:33,784 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 186 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 17:09:33,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 292 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 17:09:33,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-12-19 17:09:33,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 109. [2023-12-19 17:09:33,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 84 states have internal predecessors, (96), 13 states have call successors, (13), 10 states have call predecessors, (13), 12 states have return successors, (19), 14 states have call predecessors, (19), 13 states have call successors, (19) [2023-12-19 17:09:33,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2023-12-19 17:09:33,796 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 128 transitions. Word has length 49 [2023-12-19 17:09:33,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 17:09:33,796 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 128 transitions. [2023-12-19 17:09:33,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.055555555555555) internal successors, (73), 17 states have internal predecessors, (73), 5 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-19 17:09:33,797 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 128 transitions. [2023-12-19 17:09:33,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-19 17:09:33,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 17:09:33,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 17:09:33,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-19 17:09:34,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 17:09:34,004 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 17:09:34,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 17:09:34,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1906874739, now seen corresponding path program 1 times [2023-12-19 17:09:34,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 17:09:34,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600344136] [2023-12-19 17:09:34,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 17:09:34,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 17:09:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-19 17:09:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:35,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-19 17:09:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 17:09:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-12-19 17:09:35,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:35,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-12-19 17:09:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:35,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-19 17:09:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-19 17:09:35,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 17:09:36,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-19 17:09:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-19 17:11:04,272 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 [2023-12-19 17:11:05,475 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-19 17:11:05,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown