/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 12:31:47,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 12:31:47,709 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 12:31:47,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 12:31:47,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 12:31:47,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 12:31:47,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 12:31:47,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 12:31:47,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 12:31:47,737 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 12:31:47,737 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 12:31:47,737 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 12:31:47,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 12:31:47,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 12:31:47,738 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 12:31:47,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 12:31:47,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 12:31:47,739 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 12:31:47,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 12:31:47,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 12:31:47,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 12:31:47,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 12:31:47,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 12:31:47,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 12:31:47,740 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 12:31:47,740 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 12:31:47,740 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 12:31:47,740 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 12:31:47,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 12:31:47,741 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 12:31:47,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 12:31:47,742 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 12:31:47,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:31:47,742 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 12:31:47,742 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 12:31:47,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 12:31:47,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 12:31:47,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 12:31:47,743 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 12:31:47,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 12:31:47,743 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 12:31:47,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 12:31:47,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 12:31:47,744 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-20 12:31:47,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 12:31:47,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 12:31:47,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 12:31:47,904 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 12:31:47,904 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 12:31:47,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2023-12-20 12:31:48,937 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 12:31:49,325 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 12:31:49,326 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2023-12-20 12:31:49,350 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0a4e937/e87ae3b5715d4932b9d27287a8924dc4/FLAGebc343642 [2023-12-20 12:31:49,361 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5f0a4e937/e87ae3b5715d4932b9d27287a8924dc4 [2023-12-20 12:31:49,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 12:31:49,363 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 12:31:49,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 12:31:49,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 12:31:49,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 12:31:49,369 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:31:49" (1/1) ... [2023-12-20 12:31:49,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@711d3c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:49, skipping insertion in model container [2023-12-20 12:31:49,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:31:49" (1/1) ... [2023-12-20 12:31:49,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 12:31:49,715 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2023-12-20 12:31:49,767 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2023-12-20 12:31:50,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:31:50,326 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 12:31:50,354 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[6354,6367] [2023-12-20 12:31:50,367 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c[13290,13303] [2023-12-20 12:31:50,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 12:31:50,664 INFO L206 MainTranslator]: Completed translation [2023-12-20 12:31:50,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50 WrapperNode [2023-12-20 12:31:50,664 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 12:31:50,665 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 12:31:50,665 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 12:31:50,665 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 12:31:50,669 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:50,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:50,922 INFO L138 Inliner]: procedures = 33, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 4980 [2023-12-20 12:31:50,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 12:31:50,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 12:31:50,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 12:31:50,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 12:31:50,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:50,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,214 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 12:31:51,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,215 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,317 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,331 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,375 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 12:31:51,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 12:31:51,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 12:31:51,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 12:31:51,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (1/1) ... [2023-12-20 12:31:51,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 12:31:51,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:31:51,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 12:31:51,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 12:31:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 12:31:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 12:31:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 12:31:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 12:31:51,558 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 12:31:51,559 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 12:31:54,409 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 12:31:54,445 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 12:31:54,446 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-20 12:31:54,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:31:54 BoogieIcfgContainer [2023-12-20 12:31:54,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 12:31:54,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 12:31:54,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 12:31:54,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 12:31:54,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:31:49" (1/3) ... [2023-12-20 12:31:54,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef940cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:31:54, skipping insertion in model container [2023-12-20 12:31:54,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:31:50" (2/3) ... [2023-12-20 12:31:54,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef940cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:31:54, skipping insertion in model container [2023-12-20 12:31:54,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:31:54" (3/3) ... [2023-12-20 12:31:54,451 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals+Problem12_label05.c [2023-12-20 12:31:54,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 12:31:54,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 12:31:54,501 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 12:31:54,506 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;@32137965, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 12:31:54,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 12:31:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 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) [2023-12-20 12:31:54,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:31:54,516 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:54,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:54,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:54,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1841440842, now seen corresponding path program 1 times [2023-12-20 12:31:54,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:54,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868642820] [2023-12-20 12:31:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:54,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:54,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:54,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868642820] [2023-12-20 12:31:54,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868642820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:54,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:54,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 12:31:54,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745326762] [2023-12-20 12:31:54,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:54,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 12:31:54,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:54,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 12:31:54,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 12:31:54,660 INFO L87 Difference]: Start difference. First operand has 807 states, 804 states have (on average 1.9800995024875623) internal successors, (1592), 806 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2023-12-20 12:31:54,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:54,721 INFO L93 Difference]: Finished difference Result 1594 states and 3146 transitions. [2023-12-20 12:31:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 12:31:54,723 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2023-12-20 12:31:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:54,749 INFO L225 Difference]: With dead ends: 1594 [2023-12-20 12:31:54,749 INFO L226 Difference]: Without dead ends: 803 [2023-12-20 12:31:54,753 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 [2023-12-20 12:31:54,755 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:54,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1521 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2023-12-20 12:31:54,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2023-12-20 12:31:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.898876404494382) internal successors, (1521), 802 states have internal predecessors, (1521), 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) [2023-12-20 12:31:54,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1521 transitions. [2023-12-20 12:31:54,801 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1521 transitions. Word has length 17 [2023-12-20 12:31:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:54,801 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1521 transitions. [2023-12-20 12:31:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2023-12-20 12:31:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1521 transitions. [2023-12-20 12:31:54,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-20 12:31:54,802 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:54,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:54,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 12:31:54,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:54,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:54,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1254634828, now seen corresponding path program 1 times [2023-12-20 12:31:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998208524] [2023-12-20 12:31:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:54,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:54,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:54,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998208524] [2023-12-20 12:31:54,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998208524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:54,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:54,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:31:54,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559941194] [2023-12-20 12:31:54,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:54,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:31:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:54,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:31:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:31:54,891 INFO L87 Difference]: Start difference. First operand 803 states and 1521 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-12-20 12:31:54,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:54,996 INFO L93 Difference]: Finished difference Result 864 states and 1616 transitions. [2023-12-20 12:31:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:31:55,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-12-20 12:31:55,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:55,015 INFO L225 Difference]: With dead ends: 864 [2023-12-20 12:31:55,015 INFO L226 Difference]: Without dead ends: 832 [2023-12-20 12:31:55,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:31:55,016 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 45 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 4527 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:55,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 4527 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2023-12-20 12:31:55,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 803. [2023-12-20 12:31:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 801 states have (on average 1.8789013732833957) internal successors, (1505), 802 states have internal predecessors, (1505), 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) [2023-12-20 12:31:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1505 transitions. [2023-12-20 12:31:55,032 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1505 transitions. Word has length 17 [2023-12-20 12:31:55,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:55,032 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1505 transitions. [2023-12-20 12:31:55,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-12-20 12:31:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1505 transitions. [2023-12-20 12:31:55,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-20 12:31:55,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:55,034 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, 1, 1, 1, 1] [2023-12-20 12:31:55,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 12:31:55,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:55,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:55,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1671741616, now seen corresponding path program 1 times [2023-12-20 12:31:55,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:55,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194175320] [2023-12-20 12:31:55,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:55,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:55,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:55,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194175320] [2023-12-20 12:31:55,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194175320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:55,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:55,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518781638] [2023-12-20 12:31:55,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:55,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:55,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:55,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:55,186 INFO L87 Difference]: Start difference. First operand 803 states and 1505 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-12-20 12:31:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:55,303 INFO L93 Difference]: Finished difference Result 977 states and 1781 transitions. [2023-12-20 12:31:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 12:31:55,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 32 [2023-12-20 12:31:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:55,307 INFO L225 Difference]: With dead ends: 977 [2023-12-20 12:31:55,307 INFO L226 Difference]: Without dead ends: 948 [2023-12-20 12:31:55,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 12:31:55,308 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 4578 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4578 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:55,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4578 Valid, 1841 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 12:31:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2023-12-20 12:31:55,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 830. [2023-12-20 12:31:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8695652173913044) internal successors, (1548), 829 states have internal predecessors, (1548), 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) [2023-12-20 12:31:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1548 transitions. [2023-12-20 12:31:55,331 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1548 transitions. Word has length 32 [2023-12-20 12:31:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:55,332 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1548 transitions. [2023-12-20 12:31:55,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-12-20 12:31:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1548 transitions. [2023-12-20 12:31:55,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:31:55,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:55,333 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, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:55,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 12:31:55,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:55,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:55,334 INFO L85 PathProgramCache]: Analyzing trace with hash -349537184, now seen corresponding path program 1 times [2023-12-20 12:31:55,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:55,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166911708] [2023-12-20 12:31:55,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:55,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:55,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:55,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166911708] [2023-12-20 12:31:55,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166911708] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:55,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:55,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:55,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435363503] [2023-12-20 12:31:55,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:55,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:55,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:55,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:55,425 INFO L87 Difference]: Start difference. First operand 830 states and 1548 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-12-20 12:31:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:55,479 INFO L93 Difference]: Finished difference Result 931 states and 1707 transitions. [2023-12-20 12:31:55,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:55,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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 34 [2023-12-20 12:31:55,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:55,484 INFO L225 Difference]: With dead ends: 931 [2023-12-20 12:31:55,484 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 12:31:55,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:55,490 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 1464 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:55,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 1540 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:55,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 12:31:55,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-20 12:31:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8530424799081515) internal successors, (1614), 872 states have internal predecessors, (1614), 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) [2023-12-20 12:31:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1614 transitions. [2023-12-20 12:31:55,522 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1614 transitions. Word has length 34 [2023-12-20 12:31:55,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:55,523 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1614 transitions. [2023-12-20 12:31:55,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-12-20 12:31:55,523 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1614 transitions. [2023-12-20 12:31:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 12:31:55,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:55,528 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, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:55,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 12:31:55,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:55,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash -347392232, now seen corresponding path program 1 times [2023-12-20 12:31:55,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:55,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638091457] [2023-12-20 12:31:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:55,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:55,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638091457] [2023-12-20 12:31:55,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638091457] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:55,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:55,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711213675] [2023-12-20 12:31:55,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:55,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:55,765 INFO L87 Difference]: Start difference. First operand 873 states and 1614 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2023-12-20 12:31:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:55,882 INFO L93 Difference]: Finished difference Result 974 states and 1770 transitions. [2023-12-20 12:31:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:31:55,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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 34 [2023-12-20 12:31:55,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:55,885 INFO L225 Difference]: With dead ends: 974 [2023-12-20 12:31:55,886 INFO L226 Difference]: Without dead ends: 875 [2023-12-20 12:31:55,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 12:31:55,890 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 4411 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4411 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:55,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4411 Valid, 1579 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-12-20 12:31:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 873. [2023-12-20 12:31:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8507462686567164) internal successors, (1612), 872 states have internal predecessors, (1612), 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) [2023-12-20 12:31:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1612 transitions. [2023-12-20 12:31:55,923 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1612 transitions. Word has length 34 [2023-12-20 12:31:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:55,923 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1612 transitions. [2023-12-20 12:31:55,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2023-12-20 12:31:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1612 transitions. [2023-12-20 12:31:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-20 12:31:55,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:55,933 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:55,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 12:31:55,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:55,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:55,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1987359035, now seen corresponding path program 1 times [2023-12-20 12:31:55,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:55,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070406368] [2023-12-20 12:31:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:55,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:56,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:56,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070406368] [2023-12-20 12:31:56,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070406368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:56,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:56,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 12:31:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752971030] [2023-12-20 12:31:56,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:56,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:31:56,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:56,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:31:56,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:31:56,122 INFO L87 Difference]: Start difference. First operand 873 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2023-12-20 12:31:56,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:56,162 INFO L93 Difference]: Finished difference Result 881 states and 1621 transitions. [2023-12-20 12:31:56,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:31:56,163 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), 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 35 [2023-12-20 12:31:56,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:56,167 INFO L225 Difference]: With dead ends: 881 [2023-12-20 12:31:56,167 INFO L226 Difference]: Without dead ends: 879 [2023-12-20 12:31:56,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:31:56,168 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4495 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:56,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4495 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:56,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2023-12-20 12:31:56,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2023-12-20 12:31:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.8457142857142856) internal successors, (1615), 876 states have internal predecessors, (1615), 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) [2023-12-20 12:31:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1615 transitions. [2023-12-20 12:31:56,189 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1615 transitions. Word has length 35 [2023-12-20 12:31:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:56,190 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1615 transitions. [2023-12-20 12:31:56,190 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), 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) [2023-12-20 12:31:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1615 transitions. [2023-12-20 12:31:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:31:56,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:56,191 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:56,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 12:31:56,191 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:56,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:56,191 INFO L85 PathProgramCache]: Analyzing trace with hash 177158552, now seen corresponding path program 1 times [2023-12-20 12:31:56,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:56,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20959866] [2023-12-20 12:31:56,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:56,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:56,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:56,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20959866] [2023-12-20 12:31:56,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20959866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:56,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:56,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:56,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499234124] [2023-12-20 12:31:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:56,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:56,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:56,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:56,228 INFO L87 Difference]: Start difference. First operand 877 states and 1615 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:31:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:56,250 INFO L93 Difference]: Finished difference Result 991 states and 1788 transitions. [2023-12-20 12:31:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2023-12-20 12:31:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:56,254 INFO L225 Difference]: With dead ends: 991 [2023-12-20 12:31:56,254 INFO L226 Difference]: Without dead ends: 931 [2023-12-20 12:31:56,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:56,255 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1474 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:56,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2023-12-20 12:31:56,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 929. [2023-12-20 12:31:56,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 927 states have (on average 1.825242718446602) internal successors, (1692), 928 states have internal predecessors, (1692), 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) [2023-12-20 12:31:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1692 transitions. [2023-12-20 12:31:56,271 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1692 transitions. Word has length 36 [2023-12-20 12:31:56,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:56,271 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1692 transitions. [2023-12-20 12:31:56,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:31:56,271 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1692 transitions. [2023-12-20 12:31:56,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:31:56,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:56,272 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:56,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 12:31:56,272 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:56,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash -448497512, now seen corresponding path program 1 times [2023-12-20 12:31:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:56,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134749124] [2023-12-20 12:31:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:56,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:56,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:56,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134749124] [2023-12-20 12:31:56,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134749124] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:56,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:56,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:56,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867766407] [2023-12-20 12:31:56,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:56,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:56,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:56,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:56,302 INFO L87 Difference]: Start difference. First operand 929 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:31:56,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:56,325 INFO L93 Difference]: Finished difference Result 1211 states and 2112 transitions. [2023-12-20 12:31:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:56,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2023-12-20 12:31:56,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:56,329 INFO L225 Difference]: With dead ends: 1211 [2023-12-20 12:31:56,329 INFO L226 Difference]: Without dead ends: 1058 [2023-12-20 12:31:56,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:56,331 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1472 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:56,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2023-12-20 12:31:56,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 1056. [2023-12-20 12:31:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 1054 states have (on average 1.777988614800759) internal successors, (1874), 1055 states have internal predecessors, (1874), 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) [2023-12-20 12:31:56,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1874 transitions. [2023-12-20 12:31:56,351 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1874 transitions. Word has length 36 [2023-12-20 12:31:56,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:56,352 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1874 transitions. [2023-12-20 12:31:56,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:31:56,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1874 transitions. [2023-12-20 12:31:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-20 12:31:56,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:56,353 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:56,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 12:31:56,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:56,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:56,354 INFO L85 PathProgramCache]: Analyzing trace with hash 440235928, now seen corresponding path program 1 times [2023-12-20 12:31:56,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:56,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392386645] [2023-12-20 12:31:56,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:56,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:56,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:56,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:56,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392386645] [2023-12-20 12:31:56,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392386645] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:56,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066688212] [2023-12-20 12:31:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:56,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:56,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:56,396 INFO L87 Difference]: Start difference. First operand 1056 states and 1874 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:31:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:56,425 INFO L93 Difference]: Finished difference Result 1568 states and 2616 transitions. [2023-12-20 12:31:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:56,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36 [2023-12-20 12:31:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:56,432 INFO L225 Difference]: With dead ends: 1568 [2023-12-20 12:31:56,432 INFO L226 Difference]: Without dead ends: 1288 [2023-12-20 12:31:56,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:56,434 INFO L413 NwaCegarLoop]: 1532 mSDtfsCounter, 1470 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:56,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 1586 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:56,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-20 12:31:56,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-20 12:31:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1284 states have (on average 1.705607476635514) internal successors, (2190), 1285 states have internal predecessors, (2190), 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) [2023-12-20 12:31:56,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 2190 transitions. [2023-12-20 12:31:56,465 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 2190 transitions. Word has length 36 [2023-12-20 12:31:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:56,465 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 2190 transitions. [2023-12-20 12:31:56,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2023-12-20 12:31:56,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 2190 transitions. [2023-12-20 12:31:56,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:31:56,466 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:56,466 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 12:31:56,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:56,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1612908441, now seen corresponding path program 1 times [2023-12-20 12:31:56,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:56,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779037465] [2023-12-20 12:31:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:56,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:56,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:31:56,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:56,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779037465] [2023-12-20 12:31:56,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779037465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:56,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:56,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:56,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261870658] [2023-12-20 12:31:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:56,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:56,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:56,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:56,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:56,582 INFO L87 Difference]: Start difference. First operand 1286 states and 2190 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2023-12-20 12:31:56,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:56,673 INFO L93 Difference]: Finished difference Result 2794 states and 4342 transitions. [2023-12-20 12:31:56,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:31:56,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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 50 [2023-12-20 12:31:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:56,680 INFO L225 Difference]: With dead ends: 2794 [2023-12-20 12:31:56,681 INFO L226 Difference]: Without dead ends: 2424 [2023-12-20 12:31:56,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:31:56,682 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 3031 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:56,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3153 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:56,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2023-12-20 12:31:56,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1726. [2023-12-20 12:31:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1724 states have (on average 1.6299303944315546) internal successors, (2810), 1725 states have internal predecessors, (2810), 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) [2023-12-20 12:31:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2810 transitions. [2023-12-20 12:31:56,718 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2810 transitions. Word has length 50 [2023-12-20 12:31:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:56,718 INFO L495 AbstractCegarLoop]: Abstraction has 1726 states and 2810 transitions. [2023-12-20 12:31:56,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 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) [2023-12-20 12:31:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2810 transitions. [2023-12-20 12:31:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:31:56,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:56,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 12:31:56,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:56,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2056402791, now seen corresponding path program 1 times [2023-12-20 12:31:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389868630] [2023-12-20 12:31:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 12:31:56,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:56,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389868630] [2023-12-20 12:31:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389868630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:56,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:56,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:56,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596692128] [2023-12-20 12:31:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:56,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:56,786 INFO L87 Difference]: Start difference. First operand 1726 states and 2810 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-12-20 12:31:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:56,865 INFO L93 Difference]: Finished difference Result 3302 states and 5062 transitions. [2023-12-20 12:31:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:31:56,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 50 [2023-12-20 12:31:56,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:56,872 INFO L225 Difference]: With dead ends: 3302 [2023-12-20 12:31:56,872 INFO L226 Difference]: Without dead ends: 2792 [2023-12-20 12:31:56,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:31:56,873 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3035 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3035 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:56,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3035 Valid, 3130 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:56,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2023-12-20 12:31:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2418. [2023-12-20 12:31:56,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5653973509933774) internal successors, (3782), 2417 states have internal predecessors, (3782), 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) [2023-12-20 12:31:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3782 transitions. [2023-12-20 12:31:56,918 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3782 transitions. Word has length 50 [2023-12-20 12:31:56,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:56,918 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3782 transitions. [2023-12-20 12:31:56,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-12-20 12:31:56,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3782 transitions. [2023-12-20 12:31:56,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 12:31:56,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:56,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:56,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 12:31:56,919 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:56,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1349831065, now seen corresponding path program 1 times [2023-12-20 12:31:56,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:56,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759297570] [2023-12-20 12:31:56,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:56,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-20 12:31:56,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:56,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759297570] [2023-12-20 12:31:56,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759297570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:56,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:56,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 12:31:56,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090283193] [2023-12-20 12:31:56,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 12:31:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 12:31:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 12:31:56,973 INFO L87 Difference]: Start difference. First operand 2418 states and 3782 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-12-20 12:31:57,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:57,058 INFO L93 Difference]: Finished difference Result 3810 states and 5778 transitions. [2023-12-20 12:31:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 12:31:57,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 50 [2023-12-20 12:31:57,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:57,067 INFO L225 Difference]: With dead ends: 3810 [2023-12-20 12:31:57,067 INFO L226 Difference]: Without dead ends: 3300 [2023-12-20 12:31:57,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 12:31:57,068 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 3041 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:31:57,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3134 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:57,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3300 states. [2023-12-20 12:31:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3300 to 2926. [2023-12-20 12:31:57,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5383036935704515) internal successors, (4498), 2925 states have internal predecessors, (4498), 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) [2023-12-20 12:31:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4498 transitions. [2023-12-20 12:31:57,122 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4498 transitions. Word has length 50 [2023-12-20 12:31:57,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:57,122 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4498 transitions. [2023-12-20 12:31:57,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2023-12-20 12:31:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4498 transitions. [2023-12-20 12:31:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 12:31:57,123 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:57,123 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:57,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 12:31:57,123 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:57,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1978344379, now seen corresponding path program 1 times [2023-12-20 12:31:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309723944] [2023-12-20 12:31:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:57,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:57,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309723944] [2023-12-20 12:31:57,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309723944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:57,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:57,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:57,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3630708] [2023-12-20 12:31:57,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:57,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:57,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:57,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:57,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:57,183 INFO L87 Difference]: Start difference. First operand 2926 states and 4498 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-12-20 12:31:57,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:57,227 INFO L93 Difference]: Finished difference Result 5078 states and 7536 transitions. [2023-12-20 12:31:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:57,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2023-12-20 12:31:57,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:57,235 INFO L225 Difference]: With dead ends: 5078 [2023-12-20 12:31:57,235 INFO L226 Difference]: Without dead ends: 2928 [2023-12-20 12:31:57,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:57,238 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 29 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3011 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 [2023-12-20 12:31:57,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3011 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:57,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2928 states. [2023-12-20 12:31:57,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2928 to 2926. [2023-12-20 12:31:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2926 states, 2924 states have (on average 1.5212038303693571) internal successors, (4448), 2925 states have internal predecessors, (4448), 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) [2023-12-20 12:31:57,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2926 states to 2926 states and 4448 transitions. [2023-12-20 12:31:57,305 INFO L78 Accepts]: Start accepts. Automaton has 2926 states and 4448 transitions. Word has length 51 [2023-12-20 12:31:57,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:57,305 INFO L495 AbstractCegarLoop]: Abstraction has 2926 states and 4448 transitions. [2023-12-20 12:31:57,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2023-12-20 12:31:57,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2926 states and 4448 transitions. [2023-12-20 12:31:57,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 12:31:57,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:57,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:57,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 12:31:57,307 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:57,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:57,307 INFO L85 PathProgramCache]: Analyzing trace with hash 396658031, now seen corresponding path program 1 times [2023-12-20 12:31:57,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:57,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315135044] [2023-12-20 12:31:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:57,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:57,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:57,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315135044] [2023-12-20 12:31:57,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315135044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:57,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:57,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:57,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130010471] [2023-12-20 12:31:57,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:57,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:57,397 INFO L87 Difference]: Start difference. First operand 2926 states and 4448 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-12-20 12:31:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:57,427 INFO L93 Difference]: Finished difference Result 3772 states and 5635 transitions. [2023-12-20 12:31:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:57,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2023-12-20 12:31:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:57,431 INFO L225 Difference]: With dead ends: 3772 [2023-12-20 12:31:57,431 INFO L226 Difference]: Without dead ends: 1622 [2023-12-20 12:31:57,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:57,433 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 23 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3008 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 [2023-12-20 12:31:57,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3008 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2023-12-20 12:31:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1615. [2023-12-20 12:31:57,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.6261624302541848) internal successors, (2623), 1614 states have internal predecessors, (2623), 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) [2023-12-20 12:31:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2623 transitions. [2023-12-20 12:31:57,458 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2623 transitions. Word has length 52 [2023-12-20 12:31:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:57,458 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2623 transitions. [2023-12-20 12:31:57,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2023-12-20 12:31:57,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2623 transitions. [2023-12-20 12:31:57,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 12:31:57,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:57,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:57,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 12:31:57,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:57,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:57,460 INFO L85 PathProgramCache]: Analyzing trace with hash -230503927, now seen corresponding path program 1 times [2023-12-20 12:31:57,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:57,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867210013] [2023-12-20 12:31:57,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:57,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:57,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:57,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867210013] [2023-12-20 12:31:57,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867210013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:31:57,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:31:57,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:31:57,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132349367] [2023-12-20 12:31:57,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:31:57,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 12:31:57,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:57,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 12:31:57,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:57,509 INFO L87 Difference]: Start difference. First operand 1615 states and 2623 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-12-20 12:31:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:31:57,532 INFO L93 Difference]: Finished difference Result 2033 states and 3201 transitions. [2023-12-20 12:31:57,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 12:31:57,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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 53 [2023-12-20 12:31:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:31:57,535 INFO L225 Difference]: With dead ends: 2033 [2023-12-20 12:31:57,535 INFO L226 Difference]: Without dead ends: 1203 [2023-12-20 12:31:57,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 12:31:57,536 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 25 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2987 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 [2023-12-20 12:31:57,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2987 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 12:31:57,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2023-12-20 12:31:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2023-12-20 12:31:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1199 states have (on average 1.6997497914929107) internal successors, (2038), 1200 states have internal predecessors, (2038), 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) [2023-12-20 12:31:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 2038 transitions. [2023-12-20 12:31:57,552 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 2038 transitions. Word has length 53 [2023-12-20 12:31:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:31:57,552 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 2038 transitions. [2023-12-20 12:31:57,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 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) [2023-12-20 12:31:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 2038 transitions. [2023-12-20 12:31:57,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 12:31:57,553 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:31:57,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:31:57,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 12:31:57,553 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:31:57,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:31:57,554 INFO L85 PathProgramCache]: Analyzing trace with hash 796015063, now seen corresponding path program 1 times [2023-12-20 12:31:57,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:31:57,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565312011] [2023-12-20 12:31:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:57,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:31:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:31:58,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:31:58,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565312011] [2023-12-20 12:31:58,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565312011] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:31:58,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889304514] [2023-12-20 12:31:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:31:58,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:31:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:31:58,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:31:58,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 12:31:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:31:58,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 12:31:58,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:31:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:31:58,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:31:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 12:31:58,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889304514] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:31:58,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:31:58,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-20 12:31:58,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268532812] [2023-12-20 12:31:58,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:31:58,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 12:31:58,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:31:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 12:31:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-20 12:31:58,932 INFO L87 Difference]: Start difference. First operand 1201 states and 2038 transitions. Second operand has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 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) [2023-12-20 12:32:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:00,429 INFO L93 Difference]: Finished difference Result 3300 states and 4790 transitions. [2023-12-20 12:32:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-20 12:32:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 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 55 [2023-12-20 12:32:00,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:00,434 INFO L225 Difference]: With dead ends: 3300 [2023-12-20 12:32:00,435 INFO L226 Difference]: Without dead ends: 2884 [2023-12-20 12:32:00,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=504, Invalid=2148, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:32:00,436 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 17138 mSDsluCounter, 6163 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17138 SdHoareTripleChecker+Valid, 7654 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:00,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17138 Valid, 7654 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 12:32:00,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2023-12-20 12:32:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2672. [2023-12-20 12:32:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2670 states have (on average 1.4576779026217228) internal successors, (3892), 2671 states have internal predecessors, (3892), 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) [2023-12-20 12:32:00,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 3892 transitions. [2023-12-20 12:32:00,488 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 3892 transitions. Word has length 55 [2023-12-20 12:32:00,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:00,488 INFO L495 AbstractCegarLoop]: Abstraction has 2672 states and 3892 transitions. [2023-12-20 12:32:00,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.38888888888889) internal successors, (151), 18 states have internal predecessors, (151), 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) [2023-12-20 12:32:00,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 3892 transitions. [2023-12-20 12:32:00,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:32:00,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:00,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:00,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 12:32:00,694 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,SelfDestructingSolverStorable15 [2023-12-20 12:32:00,694 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:00,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:00,695 INFO L85 PathProgramCache]: Analyzing trace with hash -315121631, now seen corresponding path program 1 times [2023-12-20 12:32:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:00,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282546959] [2023-12-20 12:32:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:00,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:01,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282546959] [2023-12-20 12:32:01,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282546959] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:01,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822121193] [2023-12-20 12:32:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:01,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:01,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:01,066 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) [2023-12-20 12:32:01,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 12:32:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:01,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:32:01,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:01,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:01,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:32:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:02,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822121193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:32:02,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:32:02,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-20 12:32:02,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475313714] [2023-12-20 12:32:02,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:32:02,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 12:32:02,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:02,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 12:32:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-20 12:32:02,297 INFO L87 Difference]: Start difference. First operand 2672 states and 3892 transitions. Second operand has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 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) [2023-12-20 12:32:02,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:02,795 INFO L93 Difference]: Finished difference Result 6001 states and 8124 transitions. [2023-12-20 12:32:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-20 12:32:02,795 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 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 56 [2023-12-20 12:32:02,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:02,806 INFO L225 Difference]: With dead ends: 6001 [2023-12-20 12:32:02,807 INFO L226 Difference]: Without dead ends: 4422 [2023-12-20 12:32:02,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=354, Invalid=1206, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 12:32:02,810 INFO L413 NwaCegarLoop]: 1485 mSDtfsCounter, 14772 mSDsluCounter, 7535 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14772 SdHoareTripleChecker+Valid, 9020 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:02,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14772 Valid, 9020 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:32:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2023-12-20 12:32:02,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4212. [2023-12-20 12:32:02,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4212 states, 4210 states have (on average 1.3888361045130642) internal successors, (5847), 4211 states have internal predecessors, (5847), 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) [2023-12-20 12:32:02,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5847 transitions. [2023-12-20 12:32:02,901 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5847 transitions. Word has length 56 [2023-12-20 12:32:02,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:02,901 INFO L495 AbstractCegarLoop]: Abstraction has 4212 states and 5847 transitions. [2023-12-20 12:32:02,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.142857142857143) internal successors, (144), 28 states have internal predecessors, (144), 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) [2023-12-20 12:32:02,902 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5847 transitions. [2023-12-20 12:32:02,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:32:02,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:02,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:02,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 12:32:03,109 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,SelfDestructingSolverStorable16 [2023-12-20 12:32:03,109 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:03,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2010436385, now seen corresponding path program 1 times [2023-12-20 12:32:03,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:03,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052169641] [2023-12-20 12:32:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:03,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:03,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:03,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052169641] [2023-12-20 12:32:03,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052169641] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:03,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110615881] [2023-12-20 12:32:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:03,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:03,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:03,363 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) [2023-12-20 12:32:03,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 12:32:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:03,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:32:03,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:03,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:32:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110615881] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:32:04,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:32:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 12:32:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998640302] [2023-12-20 12:32:04,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:32:04,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 12:32:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 12:32:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-12-20 12:32:04,373 INFO L87 Difference]: Start difference. First operand 4212 states and 5847 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:04,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:04,981 INFO L93 Difference]: Finished difference Result 7561 states and 10123 transitions. [2023-12-20 12:32:04,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:32:04,982 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 12:32:04,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:04,988 INFO L225 Difference]: With dead ends: 7561 [2023-12-20 12:32:04,989 INFO L226 Difference]: Without dead ends: 4560 [2023-12-20 12:32:04,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 12:32:04,993 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 14987 mSDsluCounter, 6169 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14987 SdHoareTripleChecker+Valid, 7662 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:04,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14987 Valid, 7662 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:32:04,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2023-12-20 12:32:05,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4272. [2023-12-20 12:32:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 4270 states have (on average 1.3740046838407494) internal successors, (5867), 4271 states have internal predecessors, (5867), 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) [2023-12-20 12:32:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 5867 transitions. [2023-12-20 12:32:05,078 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 5867 transitions. Word has length 56 [2023-12-20 12:32:05,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:05,078 INFO L495 AbstractCegarLoop]: Abstraction has 4272 states and 5867 transitions. [2023-12-20 12:32:05,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:05,078 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 5867 transitions. [2023-12-20 12:32:05,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 12:32:05,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:05,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:05,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 12:32:05,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-20 12:32:05,284 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:05,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1055635935, now seen corresponding path program 1 times [2023-12-20 12:32:05,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:05,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813436766] [2023-12-20 12:32:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:05,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:05,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:05,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813436766] [2023-12-20 12:32:05,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813436766] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:05,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384721557] [2023-12-20 12:32:05,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:05,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:05,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:05,507 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) [2023-12-20 12:32:05,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 12:32:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:05,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:32:05,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:06,071 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:32:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:06,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384721557] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:32:06,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:32:06,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-12-20 12:32:06,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926617394] [2023-12-20 12:32:06,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:32:06,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 12:32:06,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:06,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 12:32:06,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-12-20 12:32:06,613 INFO L87 Difference]: Start difference. First operand 4272 states and 5867 transitions. Second operand has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:07,190 INFO L93 Difference]: Finished difference Result 10853 states and 14150 transitions. [2023-12-20 12:32:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 12:32:07,190 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-12-20 12:32:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:07,201 INFO L225 Difference]: With dead ends: 10853 [2023-12-20 12:32:07,202 INFO L226 Difference]: Without dead ends: 8091 [2023-12-20 12:32:07,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1412, Unknown=0, NotChecked=0, Total=1892 [2023-12-20 12:32:07,206 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 17972 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17972 SdHoareTripleChecker+Valid, 9080 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:07,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17972 Valid, 9080 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 12:32:07,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8091 states. [2023-12-20 12:32:07,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8091 to 7571. [2023-12-20 12:32:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7571 states, 7569 states have (on average 1.3065134099616857) internal successors, (9889), 7570 states have internal predecessors, (9889), 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) [2023-12-20 12:32:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7571 states to 7571 states and 9889 transitions. [2023-12-20 12:32:07,378 INFO L78 Accepts]: Start accepts. Automaton has 7571 states and 9889 transitions. Word has length 56 [2023-12-20 12:32:07,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:07,378 INFO L495 AbstractCegarLoop]: Abstraction has 7571 states and 9889 transitions. [2023-12-20 12:32:07,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.241379310344827) internal successors, (152), 29 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:07,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7571 states and 9889 transitions. [2023-12-20 12:32:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-20 12:32:07,380 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:07,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:07,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 12:32:07,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:07,589 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:07,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:07,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1773329579, now seen corresponding path program 1 times [2023-12-20 12:32:07,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:07,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583334048] [2023-12-20 12:32:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:07,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:08,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:08,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583334048] [2023-12-20 12:32:08,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583334048] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:08,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056742785] [2023-12-20 12:32:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:08,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:08,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:08,180 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:32:08,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 12:32:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:08,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-20 12:32:08,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:10,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:32:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:12,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056742785] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:32:12,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:32:12,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 22] total 49 [2023-12-20 12:32:12,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862319205] [2023-12-20 12:32:12,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:32:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-20 12:32:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:32:12,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-20 12:32:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1982, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:32:12,366 INFO L87 Difference]: Start difference. First operand 7571 states and 9889 transitions. Second operand has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:32:58,079 INFO L93 Difference]: Finished difference Result 17190 states and 21838 transitions. [2023-12-20 12:32:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-12-20 12:32:58,080 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-20 12:32:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:32:58,126 INFO L225 Difference]: With dead ends: 17190 [2023-12-20 12:32:58,126 INFO L226 Difference]: Without dead ends: 12104 [2023-12-20 12:32:58,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22446 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=10024, Invalid=43106, Unknown=0, NotChecked=0, Total=53130 [2023-12-20 12:32:58,152 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 11159 mSDsluCounter, 20517 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11159 SdHoareTripleChecker+Valid, 22020 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:32:58,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11159 Valid, 22020 Invalid, 2497 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-20 12:32:58,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12104 states. [2023-12-20 12:32:58,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12104 to 6837. [2023-12-20 12:32:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6837 states, 6835 states have (on average 1.319824433065106) internal successors, (9021), 6836 states have internal predecessors, (9021), 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) [2023-12-20 12:32:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6837 states to 6837 states and 9021 transitions. [2023-12-20 12:32:58,557 INFO L78 Accepts]: Start accepts. Automaton has 6837 states and 9021 transitions. Word has length 57 [2023-12-20 12:32:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:32:58,557 INFO L495 AbstractCegarLoop]: Abstraction has 6837 states and 9021 transitions. [2023-12-20 12:32:58,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.183673469387755) internal successors, (156), 49 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:32:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 6837 states and 9021 transitions. [2023-12-20 12:32:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:32:58,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:32:58,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:32:58,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-20 12:32:58,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:58,764 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:32:58,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:32:58,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1279123741, now seen corresponding path program 1 times [2023-12-20 12:32:58,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:32:58,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145000470] [2023-12-20 12:32:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:58,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:32:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:59,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:32:59,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145000470] [2023-12-20 12:32:59,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145000470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:32:59,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489664619] [2023-12-20 12:32:59,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:32:59,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:32:59,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:32:59,109 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:32:59,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 12:32:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:32:59,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-20 12:32:59,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:32:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:32:59,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:00,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489664619] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:00,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:00,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-12-20 12:33:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317568600] [2023-12-20 12:33:00,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:00,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 12:33:00,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 12:33:00,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-12-20 12:33:00,470 INFO L87 Difference]: Start difference. First operand 6837 states and 9021 transitions. Second operand has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 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) [2023-12-20 12:33:02,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:02,492 INFO L93 Difference]: Finished difference Result 13362 states and 17256 transitions. [2023-12-20 12:33:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 12:33:02,492 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 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 59 [2023-12-20 12:33:02,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:02,505 INFO L225 Difference]: With dead ends: 13362 [2023-12-20 12:33:02,505 INFO L226 Difference]: Without dead ends: 10528 [2023-12-20 12:33:02,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=793, Invalid=2867, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 12:33:02,515 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 15173 mSDsluCounter, 13588 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15173 SdHoareTripleChecker+Valid, 15084 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:02,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15173 Valid, 15084 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 12:33:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10528 states. [2023-12-20 12:33:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10528 to 5271. [2023-12-20 12:33:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5271 states, 5269 states have (on average 1.3437084835832227) internal successors, (7080), 5270 states have internal predecessors, (7080), 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) [2023-12-20 12:33:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 7080 transitions. [2023-12-20 12:33:02,773 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 7080 transitions. Word has length 59 [2023-12-20 12:33:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:02,773 INFO L495 AbstractCegarLoop]: Abstraction has 5271 states and 7080 transitions. [2023-12-20 12:33:02,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.5) internal successors, (144), 32 states have internal predecessors, (144), 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) [2023-12-20 12:33:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 7080 transitions. [2023-12-20 12:33:02,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-20 12:33:02,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:02,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:33:02,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 12:33:02,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:02,980 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:02,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1979944703, now seen corresponding path program 1 times [2023-12-20 12:33:02,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:02,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659105713] [2023-12-20 12:33:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:02,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659105713] [2023-12-20 12:33:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659105713] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 12:33:03,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 12:33:03,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 12:33:03,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270415166] [2023-12-20 12:33:03,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 12:33:03,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 12:33:03,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:03,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 12:33:03,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 12:33:03,070 INFO L87 Difference]: Start difference. First operand 5271 states and 7080 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-12-20 12:33:07,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:33:07,893 INFO L93 Difference]: Finished difference Result 7526 states and 11389 transitions. [2023-12-20 12:33:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 12:33:07,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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 59 [2023-12-20 12:33:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:33:07,903 INFO L225 Difference]: With dead ends: 7526 [2023-12-20 12:33:07,903 INFO L226 Difference]: Without dead ends: 6773 [2023-12-20 12:33:07,916 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 [2023-12-20 12:33:07,918 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 2332 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 6402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-20 12:33:07,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2332 Valid, 774 Invalid, 6402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-20 12:33:07,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2023-12-20 12:33:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2023-12-20 12:33:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6771 states have (on average 1.3374686161571407) internal successors, (9056), 6772 states have internal predecessors, (9056), 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) [2023-12-20 12:33:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 9056 transitions. [2023-12-20 12:33:08,156 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 9056 transitions. Word has length 59 [2023-12-20 12:33:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:33:08,156 INFO L495 AbstractCegarLoop]: Abstraction has 6773 states and 9056 transitions. [2023-12-20 12:33:08,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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) [2023-12-20 12:33:08,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 9056 transitions. [2023-12-20 12:33:08,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-20 12:33:08,157 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:33:08,157 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-12-20 12:33:08,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 12:33:08,158 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:33:08,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:33:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1433091509, now seen corresponding path program 1 times [2023-12-20 12:33:08,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:33:08,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535834896] [2023-12-20 12:33:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:08,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:33:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:08,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:33:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535834896] [2023-12-20 12:33:08,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535834896] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:33:08,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927790489] [2023-12-20 12:33:08,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:33:08,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:33:08,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:33:08,860 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:33:08,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 12:33:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:33:08,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 12:33:08,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:33:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:11,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:33:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:33:16,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927790489] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:33:16,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:33:16,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 26, 25] total 65 [2023-12-20 12:33:16,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023835369] [2023-12-20 12:33:16,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:33:16,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-20 12:33:16,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:33:16,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-20 12:33:16,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=3821, Unknown=0, NotChecked=0, Total=4160 [2023-12-20 12:33:16,774 INFO L87 Difference]: Start difference. First operand 6773 states and 9056 transitions. Second operand has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 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) [2023-12-20 12:33:33,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:37,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:41,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:45,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:49,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:55,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:33:57,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:01,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:05,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:09,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:13,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:17,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:22,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:34:23,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-12-20 12:37:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:37:21,035 INFO L93 Difference]: Finished difference Result 15883 states and 20334 transitions. [2023-12-20 12:37:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 244 states. [2023-12-20 12:37:21,036 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 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 93 [2023-12-20 12:37:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:37:21,048 INFO L225 Difference]: With dead ends: 15883 [2023-12-20 12:37:21,049 INFO L226 Difference]: Without dead ends: 14113 [2023-12-20 12:37:21,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34445 ImplicationChecksByTransitivity, 178.7s TimeCoverageRelationStatistics Valid=12357, Invalid=81584, Unknown=1, NotChecked=0, Total=93942 [2023-12-20 12:37:21,056 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 42543 mSDsluCounter, 36134 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 392 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42543 SdHoareTripleChecker+Valid, 37694 SdHoareTripleChecker+Invalid, 3915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:37:21,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42543 Valid, 37694 Invalid, 3915 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [392 Valid, 3511 Invalid, 12 Unknown, 0 Unchecked, 67.5s Time] [2023-12-20 12:37:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14113 states. [2023-12-20 12:37:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14113 to 9303. [2023-12-20 12:37:21,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9301 states have (on average 1.3143747984087732) internal successors, (12225), 9302 states have internal predecessors, (12225), 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) [2023-12-20 12:37:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 12225 transitions. [2023-12-20 12:37:21,575 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 12225 transitions. Word has length 93 [2023-12-20 12:37:21,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:37:21,575 INFO L495 AbstractCegarLoop]: Abstraction has 9303 states and 12225 transitions. [2023-12-20 12:37:21,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 4.030769230769231) internal successors, (262), 65 states have internal predecessors, (262), 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) [2023-12-20 12:37:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 12225 transitions. [2023-12-20 12:37:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 12:37:21,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:37:21,577 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:37:21,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 12:37:21,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:37:21,783 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:37:21,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:37:21,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1314319299, now seen corresponding path program 1 times [2023-12-20 12:37:21,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:37:21,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610406928] [2023-12-20 12:37:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:37:21,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:37:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:37:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:37:22,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610406928] [2023-12-20 12:37:22,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610406928] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:37:22,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797852487] [2023-12-20 12:37:22,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:37:22,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:37:22,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:37:22,436 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:37:22,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 12:37:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:37:22,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:37:22,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:37:23,616 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:23,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:37:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:25,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797852487] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:37:25,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:37:25,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-12-20 12:37:25,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237377332] [2023-12-20 12:37:25,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:37:25,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 12:37:25,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:37:25,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 12:37:25,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-12-20 12:37:25,952 INFO L87 Difference]: Start difference. First operand 9303 states and 12225 transitions. Second operand has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 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) [2023-12-20 12:37:28,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:37:28,129 INFO L93 Difference]: Finished difference Result 14328 states and 18593 transitions. [2023-12-20 12:37:28,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 12:37:28,130 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 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 94 [2023-12-20 12:37:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:37:28,138 INFO L225 Difference]: With dead ends: 14328 [2023-12-20 12:37:28,138 INFO L226 Difference]: Without dead ends: 9639 [2023-12-20 12:37:28,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2023-12-20 12:37:28,150 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 12008 mSDsluCounter, 8941 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12008 SdHoareTripleChecker+Valid, 10441 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:37:28,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12008 Valid, 10441 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:37:28,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9639 states. [2023-12-20 12:37:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9639 to 9303. [2023-12-20 12:37:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9303 states, 9301 states have (on average 1.3030856897107839) internal successors, (12120), 9302 states have internal predecessors, (12120), 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) [2023-12-20 12:37:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9303 states to 9303 states and 12120 transitions. [2023-12-20 12:37:28,676 INFO L78 Accepts]: Start accepts. Automaton has 9303 states and 12120 transitions. Word has length 94 [2023-12-20 12:37:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:37:28,676 INFO L495 AbstractCegarLoop]: Abstraction has 9303 states and 12120 transitions. [2023-12-20 12:37:28,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.407407407407407) internal successors, (200), 26 states have internal predecessors, (200), 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) [2023-12-20 12:37:28,676 INFO L276 IsEmpty]: Start isEmpty. Operand 9303 states and 12120 transitions. [2023-12-20 12:37:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 12:37:28,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:37:28,678 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:37:28,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 12:37:28,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-20 12:37:28,884 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:37:28,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:37:28,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1500044763, now seen corresponding path program 1 times [2023-12-20 12:37:28,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:37:28,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662038592] [2023-12-20 12:37:28,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:37:28,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:37:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:37:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:29,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:37:29,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662038592] [2023-12-20 12:37:29,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662038592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:37:29,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328061744] [2023-12-20 12:37:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:37:29,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:37:29,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:37:29,817 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:37:29,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 12:37:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:37:29,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-20 12:37:29,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:37:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:32,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:37:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 31 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:36,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328061744] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:37:36,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:37:36,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 17] total 52 [2023-12-20 12:37:36,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624900967] [2023-12-20 12:37:36,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:37:36,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-20 12:37:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:37:36,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-20 12:37:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=2344, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 12:37:36,665 INFO L87 Difference]: Start difference. First operand 9303 states and 12120 transitions. Second operand has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:37:53,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:37:53,801 INFO L93 Difference]: Finished difference Result 21300 states and 26983 transitions. [2023-12-20 12:37:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-12-20 12:37:53,802 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-20 12:37:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:37:53,815 INFO L225 Difference]: With dead ends: 21300 [2023-12-20 12:37:53,815 INFO L226 Difference]: Without dead ends: 15875 [2023-12-20 12:37:53,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4083 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=3070, Invalid=12182, Unknown=0, NotChecked=0, Total=15252 [2023-12-20 12:37:53,821 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 16874 mSDsluCounter, 27286 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16874 SdHoareTripleChecker+Valid, 28815 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:37:53,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16874 Valid, 28815 Invalid, 1527 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 12:37:53,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15875 states. [2023-12-20 12:37:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15875 to 14763. [2023-12-20 12:37:54,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14763 states, 14761 states have (on average 1.2774202289817762) internal successors, (18856), 14762 states have internal predecessors, (18856), 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) [2023-12-20 12:37:54,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14763 states to 14763 states and 18856 transitions. [2023-12-20 12:37:54,972 INFO L78 Accepts]: Start accepts. Automaton has 14763 states and 18856 transitions. Word has length 94 [2023-12-20 12:37:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:37:54,972 INFO L495 AbstractCegarLoop]: Abstraction has 14763 states and 18856 transitions. [2023-12-20 12:37:54,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.75) internal successors, (247), 52 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 12:37:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 14763 states and 18856 transitions. [2023-12-20 12:37:54,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:37:54,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:37:54,974 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:37:54,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 12:37:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-20 12:37:55,179 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:37:55,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:37:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1178918401, now seen corresponding path program 1 times [2023-12-20 12:37:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:37:55,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532799385] [2023-12-20 12:37:55,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:37:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:37:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:37:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:37:56,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:37:56,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532799385] [2023-12-20 12:37:56,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532799385] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:37:56,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247821277] [2023-12-20 12:37:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:37:56,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:37:56,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:37:56,416 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:37:56,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 12:37:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:37:56,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-20 12:37:56,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:38:00,075 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 54 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-20 12:38:00,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:38:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 12:38:05,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247821277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:38:05,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:38:05,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 22] total 58 [2023-12-20 12:38:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016636847] [2023-12-20 12:38:05,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:38:05,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-20 12:38:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:38:05,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-20 12:38:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=3050, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 12:38:05,121 INFO L87 Difference]: Start difference. First operand 14763 states and 18856 transitions. Second operand has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 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) [2023-12-20 12:38:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:38:50,790 INFO L93 Difference]: Finished difference Result 26816 states and 33605 transitions. [2023-12-20 12:38:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-20 12:38:50,791 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 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 95 [2023-12-20 12:38:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:38:50,808 INFO L225 Difference]: With dead ends: 26816 [2023-12-20 12:38:50,808 INFO L226 Difference]: Without dead ends: 20170 [2023-12-20 12:38:50,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12235 ImplicationChecksByTransitivity, 41.6s TimeCoverageRelationStatistics Valid=5990, Invalid=34210, Unknown=0, NotChecked=0, Total=40200 [2023-12-20 12:38:50,816 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 34574 mSDsluCounter, 36588 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34574 SdHoareTripleChecker+Valid, 38165 SdHoareTripleChecker+Invalid, 4279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:38:50,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34574 Valid, 38165 Invalid, 4279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [161 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-12-20 12:38:50,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20170 states. [2023-12-20 12:38:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20170 to 17372. [2023-12-20 12:38:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17372 states, 17370 states have (on average 1.2686816350028784) internal successors, (22037), 17371 states have internal predecessors, (22037), 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) [2023-12-20 12:38:52,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17372 states to 17372 states and 22037 transitions. [2023-12-20 12:38:52,223 INFO L78 Accepts]: Start accepts. Automaton has 17372 states and 22037 transitions. Word has length 95 [2023-12-20 12:38:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:38:52,223 INFO L495 AbstractCegarLoop]: Abstraction has 17372 states and 22037 transitions. [2023-12-20 12:38:52,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 4.051724137931035) internal successors, (235), 58 states have internal predecessors, (235), 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) [2023-12-20 12:38:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 17372 states and 22037 transitions. [2023-12-20 12:38:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 12:38:52,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:38:52,225 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:38:52,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-20 12:38:52,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-20 12:38:52,430 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:38:52,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:38:52,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2104979989, now seen corresponding path program 1 times [2023-12-20 12:38:52,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:38:52,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656435430] [2023-12-20 12:38:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:38:52,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:38:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:38:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:53,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:38:53,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656435430] [2023-12-20 12:38:53,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656435430] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:38:53,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529222705] [2023-12-20 12:38:53,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:38:53,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:38:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:38:53,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:38:53,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 12:38:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:38:53,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 12:38:53,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:38:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:54,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:38:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:38:56,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529222705] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:38:56,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:38:56,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-12-20 12:38:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104351125] [2023-12-20 12:38:56,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:38:56,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-20 12:38:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:38:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-20 12:38:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2023-12-20 12:38:56,099 INFO L87 Difference]: Start difference. First operand 17372 states and 22037 transitions. Second operand has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 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) [2023-12-20 12:38:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:38:58,783 INFO L93 Difference]: Finished difference Result 28995 states and 36527 transitions. [2023-12-20 12:38:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 12:38:58,783 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 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 95 [2023-12-20 12:38:58,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:38:58,799 INFO L225 Difference]: With dead ends: 28995 [2023-12-20 12:38:58,799 INFO L226 Difference]: Without dead ends: 17494 [2023-12-20 12:38:58,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2023-12-20 12:38:58,806 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 17735 mSDsluCounter, 9060 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17735 SdHoareTripleChecker+Valid, 10563 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:38:58,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17735 Valid, 10563 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 12:38:58,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17494 states. [2023-12-20 12:39:00,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17494 to 17364. [2023-12-20 12:39:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17364 states, 17362 states have (on average 1.2512383365971662) internal successors, (21724), 17363 states have internal predecessors, (21724), 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) [2023-12-20 12:39:00,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17364 states to 17364 states and 21724 transitions. [2023-12-20 12:39:00,270 INFO L78 Accepts]: Start accepts. Automaton has 17364 states and 21724 transitions. Word has length 95 [2023-12-20 12:39:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:39:00,270 INFO L495 AbstractCegarLoop]: Abstraction has 17364 states and 21724 transitions. [2023-12-20 12:39:00,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.153846153846153) internal successors, (212), 25 states have internal predecessors, (212), 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) [2023-12-20 12:39:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 17364 states and 21724 transitions. [2023-12-20 12:39:00,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 12:39:00,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:39:00,272 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:39:00,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 12:39:00,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-20 12:39:00,477 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:39:00,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:39:00,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1976078083, now seen corresponding path program 1 times [2023-12-20 12:39:00,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:39:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425476540] [2023-12-20 12:39:00,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:39:00,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:39:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:39:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:01,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:39:01,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425476540] [2023-12-20 12:39:01,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425476540] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:39:01,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819311438] [2023-12-20 12:39:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:39:01,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:39:01,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:39:01,995 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:39:01,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 12:39:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:39:02,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-20 12:39:02,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:39:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:07,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:39:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:39:13,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819311438] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:39:13,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:39:13,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 24] total 66 [2023-12-20 12:39:13,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446450528] [2023-12-20 12:39:13,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:39:13,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 12:39:13,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:39:13,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 12:39:13,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=3942, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 12:39:13,340 INFO L87 Difference]: Start difference. First operand 17364 states and 21724 transitions. Second operand has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 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) [2023-12-20 12:39:59,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:39:59,005 INFO L93 Difference]: Finished difference Result 29166 states and 36001 transitions. [2023-12-20 12:39:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-12-20 12:39:59,006 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 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 96 [2023-12-20 12:39:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:39:59,024 INFO L225 Difference]: With dead ends: 29166 [2023-12-20 12:39:59,024 INFO L226 Difference]: Without dead ends: 23052 [2023-12-20 12:39:59,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14098 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=7178, Invalid=41884, Unknown=0, NotChecked=0, Total=49062 [2023-12-20 12:39:59,034 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 27581 mSDsluCounter, 29031 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27581 SdHoareTripleChecker+Valid, 30557 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-20 12:39:59,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27581 Valid, 30557 Invalid, 2159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [184 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-20 12:39:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23052 states. [2023-12-20 12:40:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23052 to 17098. [2023-12-20 12:40:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17098 states, 17096 states have (on average 1.2512283575105287) internal successors, (21391), 17097 states have internal predecessors, (21391), 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) [2023-12-20 12:40:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17098 states to 17098 states and 21391 transitions. [2023-12-20 12:40:00,658 INFO L78 Accepts]: Start accepts. Automaton has 17098 states and 21391 transitions. Word has length 96 [2023-12-20 12:40:00,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:40:00,658 INFO L495 AbstractCegarLoop]: Abstraction has 17098 states and 21391 transitions. [2023-12-20 12:40:00,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.9545454545454546) internal successors, (261), 66 states have internal predecessors, (261), 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) [2023-12-20 12:40:00,659 INFO L276 IsEmpty]: Start isEmpty. Operand 17098 states and 21391 transitions. [2023-12-20 12:40:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-20 12:40:00,660 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:40:00,660 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:40:00,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 12:40:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 12:40:00,865 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:40:00,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:40:00,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1749146369, now seen corresponding path program 1 times [2023-12-20 12:40:00,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:40:00,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157068799] [2023-12-20 12:40:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:00,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:40:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:02,729 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:02,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:40:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157068799] [2023-12-20 12:40:02,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157068799] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:40:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604693022] [2023-12-20 12:40:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:40:02,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:40:02,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:40:02,730 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:40:02,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 12:40:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:40:02,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-20 12:40:02,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:40:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:08,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:40:14,563 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 37 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:40:14,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604693022] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:40:14,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:40:14,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22, 21] total 66 [2023-12-20 12:40:14,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763343543] [2023-12-20 12:40:14,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:40:14,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-20 12:40:14,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:40:14,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-20 12:40:14,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=332, Invalid=3958, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 12:40:14,565 INFO L87 Difference]: Start difference. First operand 17098 states and 21391 transitions. Second operand has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 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) [2023-12-20 12:42:02,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:42:02,706 INFO L93 Difference]: Finished difference Result 27289 states and 33650 transitions. [2023-12-20 12:42:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-20 12:42:02,706 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 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 96 [2023-12-20 12:42:02,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:42:02,725 INFO L225 Difference]: With dead ends: 27289 [2023-12-20 12:42:02,726 INFO L226 Difference]: Without dead ends: 24423 [2023-12-20 12:42:02,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31193 ImplicationChecksByTransitivity, 103.6s TimeCoverageRelationStatistics Valid=11193, Invalid=77909, Unknown=0, NotChecked=0, Total=89102 [2023-12-20 12:42:02,732 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 26275 mSDsluCounter, 31950 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26275 SdHoareTripleChecker+Valid, 33525 SdHoareTripleChecker+Invalid, 3314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-12-20 12:42:02,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26275 Valid, 33525 Invalid, 3314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-12-20 12:42:02,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2023-12-20 12:42:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 18319. [2023-12-20 12:42:04,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18319 states, 18317 states have (on average 1.2478571818529236) internal successors, (22857), 18318 states have internal predecessors, (22857), 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) [2023-12-20 12:42:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18319 states to 18319 states and 22857 transitions. [2023-12-20 12:42:04,589 INFO L78 Accepts]: Start accepts. Automaton has 18319 states and 22857 transitions. Word has length 96 [2023-12-20 12:42:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:42:04,589 INFO L495 AbstractCegarLoop]: Abstraction has 18319 states and 22857 transitions. [2023-12-20 12:42:04,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.803030303030303) internal successors, (251), 66 states have internal predecessors, (251), 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) [2023-12-20 12:42:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 18319 states and 22857 transitions. [2023-12-20 12:42:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:42:04,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:42:04,590 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:42:04,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 12:42:04,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 12:42:04,795 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:42:04,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:42:04,795 INFO L85 PathProgramCache]: Analyzing trace with hash 890945219, now seen corresponding path program 1 times [2023-12-20 12:42:04,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:42:04,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603360905] [2023-12-20 12:42:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:04,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:42:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:05,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:42:05,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603360905] [2023-12-20 12:42:05,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603360905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:42:05,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918541590] [2023-12-20 12:42:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:05,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:05,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:42:05,874 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:42:05,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 12:42:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:05,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 12:42:05,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:42:08,187 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:08,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:42:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 29 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918541590] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:42:12,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:42:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 54 [2023-12-20 12:42:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536222689] [2023-12-20 12:42:12,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:42:12,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-12-20 12:42:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:42:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-12-20 12:42:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2592, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 12:42:12,802 INFO L87 Difference]: Start difference. First operand 18319 states and 22857 transitions. Second operand has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 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) [2023-12-20 12:42:37,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:42:37,367 INFO L93 Difference]: Finished difference Result 30831 states and 38054 transitions. [2023-12-20 12:42:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-20 12:42:37,367 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 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 97 [2023-12-20 12:42:37,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:42:37,391 INFO L225 Difference]: With dead ends: 30831 [2023-12-20 12:42:37,391 INFO L226 Difference]: Without dead ends: 25705 [2023-12-20 12:42:37,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7024 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=4131, Invalid=19739, Unknown=0, NotChecked=0, Total=23870 [2023-12-20 12:42:37,398 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 18350 mSDsluCounter, 24234 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18350 SdHoareTripleChecker+Valid, 25814 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-12-20 12:42:37,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18350 Valid, 25814 Invalid, 2778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [140 Valid, 2638 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-20 12:42:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25705 states. [2023-12-20 12:42:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25705 to 18257. [2023-12-20 12:42:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18257 states, 18255 states have (on average 1.247658175842235) internal successors, (22776), 18256 states have internal predecessors, (22776), 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) [2023-12-20 12:42:39,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18257 states to 18257 states and 22776 transitions. [2023-12-20 12:42:39,430 INFO L78 Accepts]: Start accepts. Automaton has 18257 states and 22776 transitions. Word has length 97 [2023-12-20 12:42:39,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:42:39,430 INFO L495 AbstractCegarLoop]: Abstraction has 18257 states and 22776 transitions. [2023-12-20 12:42:39,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 4.833333333333333) internal successors, (261), 54 states have internal predecessors, (261), 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) [2023-12-20 12:42:39,431 INFO L276 IsEmpty]: Start isEmpty. Operand 18257 states and 22776 transitions. [2023-12-20 12:42:39,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:42:39,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:42:39,432 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:42:39,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-20 12:42:39,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:39,637 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:42:39,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:42:39,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2100564577, now seen corresponding path program 1 times [2023-12-20 12:42:39,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:42:39,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414129277] [2023-12-20 12:42:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:39,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:42:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:41,046 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 19 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:41,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:42:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414129277] [2023-12-20 12:42:41,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414129277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:42:41,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936012555] [2023-12-20 12:42:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:42:41,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:42:41,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:42:41,069 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:42:41,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 12:42:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:42:41,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:42:41,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:42:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:43,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:42:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 20 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:42:45,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936012555] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:42:45,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:42:45,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16, 15] total 49 [2023-12-20 12:42:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812160988] [2023-12-20 12:42:45,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:42:45,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-20 12:42:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:42:45,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-20 12:42:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=2149, Unknown=0, NotChecked=0, Total=2352 [2023-12-20 12:42:45,647 INFO L87 Difference]: Start difference. First operand 18257 states and 22776 transitions. Second operand has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 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) [2023-12-20 12:43:18,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:43:18,677 INFO L93 Difference]: Finished difference Result 50156 states and 61319 transitions. [2023-12-20 12:43:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2023-12-20 12:43:18,677 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 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 97 [2023-12-20 12:43:18,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:43:18,710 INFO L225 Difference]: With dead ends: 50156 [2023-12-20 12:43:18,711 INFO L226 Difference]: Without dead ends: 37165 [2023-12-20 12:43:18,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21135 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=8690, Invalid=46770, Unknown=0, NotChecked=0, Total=55460 [2023-12-20 12:43:18,719 INFO L413 NwaCegarLoop]: 1631 mSDtfsCounter, 31917 mSDsluCounter, 20370 mSDsCounter, 0 mSdLazyCounter, 4961 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31917 SdHoareTripleChecker+Valid, 22001 SdHoareTripleChecker+Invalid, 5105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 4961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:43:18,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31917 Valid, 22001 Invalid, 5105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [144 Valid, 4961 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-20 12:43:18,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37165 states. [2023-12-20 12:43:21,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37165 to 25663. [2023-12-20 12:43:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25663 states, 25661 states have (on average 1.2411831183508046) internal successors, (31850), 25662 states have internal predecessors, (31850), 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) [2023-12-20 12:43:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25663 states to 25663 states and 31850 transitions. [2023-12-20 12:43:21,700 INFO L78 Accepts]: Start accepts. Automaton has 25663 states and 31850 transitions. Word has length 97 [2023-12-20 12:43:21,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:43:21,700 INFO L495 AbstractCegarLoop]: Abstraction has 25663 states and 31850 transitions. [2023-12-20 12:43:21,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.326530612244898) internal successors, (261), 49 states have internal predecessors, (261), 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) [2023-12-20 12:43:21,701 INFO L276 IsEmpty]: Start isEmpty. Operand 25663 states and 31850 transitions. [2023-12-20 12:43:21,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:43:21,702 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:43:21,702 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:43:21,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-20 12:43:21,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:21,906 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:43:21,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:43:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash -346107173, now seen corresponding path program 1 times [2023-12-20 12:43:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:43:21,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172221853] [2023-12-20 12:43:21,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:21,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:43:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 42 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:22,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:43:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172221853] [2023-12-20 12:43:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172221853] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:43:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225533285] [2023-12-20 12:43:22,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:22,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:43:22,588 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:43:22,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 12:43:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:22,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:43:22,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:43:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 48 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:24,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:43:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 41 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:26,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225533285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:43:26,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:43:26,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 41 [2023-12-20 12:43:26,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874990970] [2023-12-20 12:43:26,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:43:26,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 12:43:26,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:43:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 12:43:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 12:43:26,545 INFO L87 Difference]: Start difference. First operand 25663 states and 31850 transitions. Second operand has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 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) [2023-12-20 12:43:42,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:43:42,180 INFO L93 Difference]: Finished difference Result 67306 states and 82991 transitions. [2023-12-20 12:43:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-20 12:43:42,181 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 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 97 [2023-12-20 12:43:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:43:42,233 INFO L225 Difference]: With dead ends: 67306 [2023-12-20 12:43:42,233 INFO L226 Difference]: Without dead ends: 50864 [2023-12-20 12:43:42,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2788 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=2317, Invalid=9455, Unknown=0, NotChecked=0, Total=11772 [2023-12-20 12:43:42,242 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 24963 mSDsluCounter, 23622 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24963 SdHoareTripleChecker+Valid, 25176 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 12:43:42,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24963 Valid, 25176 Invalid, 1986 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [110 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 12:43:42,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50864 states. [2023-12-20 12:43:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50864 to 33175. [2023-12-20 12:43:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33175 states, 33173 states have (on average 1.2390498296807644) internal successors, (41103), 33174 states have internal predecessors, (41103), 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) [2023-12-20 12:43:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33175 states to 33175 states and 41103 transitions. [2023-12-20 12:43:46,488 INFO L78 Accepts]: Start accepts. Automaton has 33175 states and 41103 transitions. Word has length 97 [2023-12-20 12:43:46,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:43:46,489 INFO L495 AbstractCegarLoop]: Abstraction has 33175 states and 41103 transitions. [2023-12-20 12:43:46,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.365853658536586) internal successors, (261), 41 states have internal predecessors, (261), 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) [2023-12-20 12:43:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 33175 states and 41103 transitions. [2023-12-20 12:43:46,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 12:43:46,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:43:46,490 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:43:46,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 12:43:46,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:46,695 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:43:46,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:43:46,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1728393669, now seen corresponding path program 1 times [2023-12-20 12:43:46,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:43:46,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286349956] [2023-12-20 12:43:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:46,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:43:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:47,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:43:47,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286349956] [2023-12-20 12:43:47,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286349956] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:43:47,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350217326] [2023-12-20 12:43:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:43:47,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:43:47,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:43:47,275 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:43:47,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 12:43:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:43:47,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 12:43:47,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:43:49,032 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:49,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:43:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:43:51,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350217326] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:43:51,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:43:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 41 [2023-12-20 12:43:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456286856] [2023-12-20 12:43:51,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:43:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-20 12:43:51,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:43:51,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-20 12:43:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2023-12-20 12:43:51,439 INFO L87 Difference]: Start difference. First operand 33175 states and 41103 transitions. Second operand has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 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) [2023-12-20 12:44:09,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 12:44:09,297 INFO L93 Difference]: Finished difference Result 69577 states and 85777 transitions. [2023-12-20 12:44:09,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-12-20 12:44:09,298 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 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 97 [2023-12-20 12:44:09,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 12:44:09,350 INFO L225 Difference]: With dead ends: 69577 [2023-12-20 12:44:09,350 INFO L226 Difference]: Without dead ends: 54139 [2023-12-20 12:44:09,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4474 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=2871, Invalid=12135, Unknown=0, NotChecked=0, Total=15006 [2023-12-20 12:44:09,360 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 30157 mSDsluCounter, 16763 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30157 SdHoareTripleChecker+Valid, 18312 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:44:09,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30157 Valid, 18312 Invalid, 2277 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 12:44:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54139 states. [2023-12-20 12:44:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54139 to 37232. [2023-12-20 12:44:14,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37232 states, 37230 states have (on average 1.236153639538007) internal successors, (46022), 37231 states have internal predecessors, (46022), 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) [2023-12-20 12:44:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37232 states to 37232 states and 46022 transitions. [2023-12-20 12:44:14,325 INFO L78 Accepts]: Start accepts. Automaton has 37232 states and 46022 transitions. Word has length 97 [2023-12-20 12:44:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 12:44:14,325 INFO L495 AbstractCegarLoop]: Abstraction has 37232 states and 46022 transitions. [2023-12-20 12:44:14,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.219512195121951) internal successors, (255), 41 states have internal predecessors, (255), 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) [2023-12-20 12:44:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 37232 states and 46022 transitions. [2023-12-20 12:44:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-20 12:44:14,326 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 12:44:14,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:44:14,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-20 12:44:14,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:44:14,531 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 12:44:14,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 12:44:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 595655367, now seen corresponding path program 1 times [2023-12-20 12:44:14,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 12:44:14,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211762395] [2023-12-20 12:44:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:44:14,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 12:44:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:44:16,091 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 12:44:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211762395] [2023-12-20 12:44:16,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211762395] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 12:44:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695151708] [2023-12-20 12:44:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 12:44:16,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:44:16,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 12:44:16,093 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 12:44:16,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 12:44:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 12:44:16,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-20 12:44:16,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 12:44:21,255 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:21,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 12:44:29,977 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 29 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 12:44:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695151708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 12:44:29,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 12:44:29,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 69 [2023-12-20 12:44:29,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395371415] [2023-12-20 12:44:29,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 12:44:29,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-12-20 12:44:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 12:44:29,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-12-20 12:44:29,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=517, Invalid=4175, Unknown=0, NotChecked=0, Total=4692 [2023-12-20 12:44:29,979 INFO L87 Difference]: Start difference. First operand 37232 states and 46022 transitions. Second operand has 69 states, 69 states have (on average 3.8260869565217392) internal successors, (264), 69 states have internal predecessors, (264), 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) Received shutdown request... [2023-12-20 12:46:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 229 states. [2023-12-20 12:46:02,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 149 SyntacticMatches, 2 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30265 ImplicationChecksByTransitivity, 86.8s TimeCoverageRelationStatistics Valid=12559, Invalid=71251, Unknown=0, NotChecked=0, Total=83810 [2023-12-20 12:46:02,042 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 7849 mSDsluCounter, 11300 mSDsCounter, 0 mSdLazyCounter, 3589 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7849 SdHoareTripleChecker+Valid, 11767 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 3589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-12-20 12:46:02,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7849 Valid, 11767 Invalid, 3785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 3589 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-12-20 12:46:02,043 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-20 12:46:02,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 12:46:02,066 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:46:02,066 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 12:46:02,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 12:46:02,249 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (37232states) and FLOYD_HOARE automaton (currently 229 states, 69 states before enhancement),while ReachableStatesComputation was computing reachable states (48466 states constructed, input type IntersectNwa). [2023-12-20 12:46:02,253 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-20 12:46:02,255 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 12:46:02,257 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 12:46:02,258 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 12:46:02 BoogieIcfgContainer [2023-12-20 12:46:02,258 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 12:46:02,258 INFO L158 Benchmark]: Toolchain (without parser) took 852895.02ms. Allocated memory was 226.5MB in the beginning and 2.1GB in the end (delta: 1.8GB). Free memory was 159.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-20 12:46:02,258 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 226.5MB. Free memory is still 171.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 12:46:02,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1299.03ms. Allocated memory was 226.5MB in the beginning and 378.5MB in the end (delta: 152.0MB). Free memory was 159.7MB in the beginning and 254.1MB in the end (delta: -94.4MB). Peak memory consumption was 110.1MB. Max. memory is 8.0GB. [2023-12-20 12:46:02,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 257.54ms. Allocated memory is still 378.5MB. Free memory was 254.1MB in the beginning and 182.2MB in the end (delta: 71.8MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2023-12-20 12:46:02,259 INFO L158 Benchmark]: Boogie Preprocessor took 493.14ms. Allocated memory is still 378.5MB. Free memory was 182.2MB in the beginning and 261.9MB in the end (delta: -79.7MB). Peak memory consumption was 70.8MB. Max. memory is 8.0GB. [2023-12-20 12:46:02,259 INFO L158 Benchmark]: RCFGBuilder took 3028.88ms. Allocated memory was 378.5MB in the beginning and 717.2MB in the end (delta: 338.7MB). Free memory was 261.9MB in the beginning and 398.4MB in the end (delta: -136.5MB). Peak memory consumption was 204.3MB. Max. memory is 8.0GB. [2023-12-20 12:46:02,259 INFO L158 Benchmark]: TraceAbstraction took 847810.59ms. Allocated memory was 717.2MB in the beginning and 2.1GB in the end (delta: 1.4GB). Free memory was 397.9MB in the beginning and 1.3GB in the end (delta: -929.9MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-20 12:46:02,260 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 226.5MB. Free memory is still 171.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1299.03ms. Allocated memory was 226.5MB in the beginning and 378.5MB in the end (delta: 152.0MB). Free memory was 159.7MB in the beginning and 254.1MB in the end (delta: -94.4MB). Peak memory consumption was 110.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 257.54ms. Allocated memory is still 378.5MB. Free memory was 254.1MB in the beginning and 182.2MB in the end (delta: 71.8MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 493.14ms. Allocated memory is still 378.5MB. Free memory was 182.2MB in the beginning and 261.9MB in the end (delta: -79.7MB). Peak memory consumption was 70.8MB. Max. memory is 8.0GB. * RCFGBuilder took 3028.88ms. Allocated memory was 378.5MB in the beginning and 717.2MB in the end (delta: 338.7MB). Free memory was 261.9MB in the beginning and 398.4MB in the end (delta: -136.5MB). Peak memory consumption was 204.3MB. Max. memory is 8.0GB. * TraceAbstraction took 847810.59ms. Allocated memory was 717.2MB in the beginning and 2.1GB in the end (delta: 1.4GB). Free memory was 397.9MB in the beginning and 1.3GB in the end (delta: -929.9MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 290]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 290). Cancelled while NwaCegarLoop was constructing difference of abstraction (37232states) and FLOYD_HOARE automaton (currently 229 states, 69 states before enhancement),while ReachableStatesComputation was computing reachable states (48466 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 485]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 485). Cancelled while NwaCegarLoop was constructing difference of abstraction (37232states) and FLOYD_HOARE automaton (currently 229 states, 69 states before enhancement),while ReachableStatesComputation was computing reachable states (48466 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 807 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 847.8s, OverallIterations: 34, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 706.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 408458 SdHoareTripleChecker+Valid, 123.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 408458 mSDsluCounter, 402798 SdHoareTripleChecker+Invalid, 116.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 352741 mSDsCounter, 3426 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40421 IncrementalHoareTripleChecker+Invalid, 43859 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3426 mSolverCounterUnsat, 50057 mSDtfsCounter, 40421 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5145 GetRequests, 2505 SyntacticMatches, 11 SemanticMatches, 2629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187408 ImplicationChecksByTransitivity, 589.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37232occurred in iteration=33, InterpolantAutomatonStates: 1730, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 24.5s AutomataMinimizationTime, 33 MinimizatonAttempts, 88160 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 110.5s InterpolantComputationTime, 3618 NumberOfCodeBlocks, 3618 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 5036 ConstructedInterpolants, 4 QuantifiedInterpolants, 110012 SizeOfPredicates, 162 NumberOfNonLiveVariables, 6828 ConjunctsInSsa, 512 ConjunctsInUnsatCore, 70 InterpolantComputations, 16 PerfectInterpolantSequences, 1320/3384 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown