/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 00:39:59,996 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 00:40:00,058 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-19 00:40:00,078 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 00:40:00,078 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 00:40:00,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 00:40:00,098 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 00:40:00,098 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 00:40:00,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 00:40:00,099 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 00:40:00,099 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 00:40:00,099 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 00:40:00,100 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 00:40:00,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 00:40:00,112 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 00:40:00,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 00:40:00,113 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 00:40:00,113 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 00:40:00,113 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 00:40:00,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 00:40:00,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 00:40:00,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 00:40:00,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 00:40:00,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 00:40:00,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 00:40:00,115 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 00:40:00,115 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 00:40:00,115 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 00:40:00,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 00:40:00,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 00:40:00,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 00:40:00,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 00:40:00,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:40:00,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 00:40:00,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 00:40:00,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 00:40:00,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 00:40:00,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 00:40:00,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 00:40:00,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 00:40:00,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 00:40:00,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 00:40:00,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 00:40:00,117 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 00:40:00,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 00:40:00,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 00:40:00,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 00:40:00,319 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 00:40:00,319 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 00:40:00,320 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-19 00:40:01,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 00:40:01,720 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 00:40:01,721 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-19 00:40:01,747 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ca5a29f/08f17df5f0b74a0584f13c123c1cefa6/FLAGba63ec4fb [2023-12-19 00:40:01,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ca5a29f/08f17df5f0b74a0584f13c123c1cefa6 [2023-12-19 00:40:01,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 00:40:01,762 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 00:40:01,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 00:40:01,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 00:40:01,769 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 00:40:01,770 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:40:01" (1/1) ... [2023-12-19 00:40:01,770 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675144bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:01, skipping insertion in model container [2023-12-19 00:40:01,771 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 12:40:01" (1/1) ... [2023-12-19 00:40:01,886 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 00:40:02,157 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.5_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[11742,11755] [2023-12-19 00:40:02,214 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.5_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[18803,18816] [2023-12-19 00:40:02,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:40:02,688 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 00:40:02,717 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.5_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[11742,11755] [2023-12-19 00:40:02,729 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.5_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[18803,18816] [2023-12-19 00:40:02,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 00:40:03,017 INFO L206 MainTranslator]: Completed translation [2023-12-19 00:40:03,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03 WrapperNode [2023-12-19 00:40:03,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 00:40:03,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 00:40:03,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 00:40:03,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 00:40:03,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,319 INFO L138 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5090 [2023-12-19 00:40:03,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 00:40:03,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 00:40:03,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 00:40:03,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 00:40:03,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,369 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,492 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]. [2023-12-19 00:40:03,492 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,492 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,581 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 00:40:03,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 00:40:03,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 00:40:03,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 00:40:03,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (1/1) ... [2023-12-19 00:40:03,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 00:40:03,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:40:03,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-19 00:40:03,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-19 00:40:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 00:40:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 00:40:03,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 00:40:03,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 00:40:03,991 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 00:40:03,992 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 00:40:06,984 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 00:40:07,042 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 00:40:07,042 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-19 00:40:07,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:40:07 BoogieIcfgContainer [2023-12-19 00:40:07,043 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 00:40:07,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 00:40:07,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 00:40:07,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 00:40:07,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 12:40:01" (1/3) ... [2023-12-19 00:40:07,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202dcfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:40:07, skipping insertion in model container [2023-12-19 00:40:07,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 12:40:03" (2/3) ... [2023-12-19 00:40:07,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202dcfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 12:40:07, skipping insertion in model container [2023-12-19 00:40:07,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 12:40:07" (3/3) ... [2023-12-19 00:40:07,049 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-12-19 00:40:07,064 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 00:40:07,064 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-19 00:40:07,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 00:40:07,120 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;@58915508, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 00:40:07,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-19 00:40:07,128 INFO L276 IsEmpty]: Start isEmpty. Operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:40:07,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:07,134 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] [2023-12-19 00:40:07,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:07,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:07,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1603356568, now seen corresponding path program 1 times [2023-12-19 00:40:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:07,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363326254] [2023-12-19 00:40:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:07,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:07,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363326254] [2023-12-19 00:40:07,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363326254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:07,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:07,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:40:07,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230474356] [2023-12-19 00:40:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:07,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 00:40:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 00:40:07,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:40:07,384 INFO L87 Difference]: Start difference. First operand has 834 states, 831 states have (on average 1.9759326113116726) internal successors, (1642), 833 states have internal predecessors, (1642), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:07,492 INFO L93 Difference]: Finished difference Result 1632 states and 3215 transitions. [2023-12-19 00:40:07,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 00:40:07,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:40:07,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:07,514 INFO L225 Difference]: With dead ends: 1632 [2023-12-19 00:40:07,514 INFO L226 Difference]: Without dead ends: 830 [2023-12-19 00:40:07,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 00:40:07,520 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:07,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1570 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-19 00:40:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-19 00:40:07,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8973429951690821) internal successors, (1571), 829 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:07,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1571 transitions. [2023-12-19 00:40:07,583 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1571 transitions. Word has length 21 [2023-12-19 00:40:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:07,584 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1571 transitions. [2023-12-19 00:40:07,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:07,584 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1571 transitions. [2023-12-19 00:40:07,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-19 00:40:07,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:07,585 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] [2023-12-19 00:40:07,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 00:40:07,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:07,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:07,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1103262826, now seen corresponding path program 1 times [2023-12-19 00:40:07,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:07,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047805619] [2023-12-19 00:40:07,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:07,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:07,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:07,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:07,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047805619] [2023-12-19 00:40:07,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047805619] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:07,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:07,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:40:07,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150506528] [2023-12-19 00:40:07,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:07,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:40:07,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:07,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:40:07,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:40:07,775 INFO L87 Difference]: Start difference. First operand 830 states and 1571 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:07,834 INFO L93 Difference]: Finished difference Result 874 states and 1640 transitions. [2023-12-19 00:40:07,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:40:07,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-19 00:40:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:07,838 INFO L225 Difference]: With dead ends: 874 [2023-12-19 00:40:07,838 INFO L226 Difference]: Without dead ends: 830 [2023-12-19 00:40:07,840 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 [2023-12-19 00:40:07,841 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 0 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4669 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:07,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4669 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-12-19 00:40:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-12-19 00:40:07,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 828 states have (on average 1.8599033816425121) internal successors, (1540), 829 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1540 transitions. [2023-12-19 00:40:07,874 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1540 transitions. Word has length 21 [2023-12-19 00:40:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:07,874 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1540 transitions. [2023-12-19 00:40:07,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1540 transitions. [2023-12-19 00:40:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-19 00:40:07,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:07,880 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] [2023-12-19 00:40:07,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 00:40:07,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:07,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:07,882 INFO L85 PathProgramCache]: Analyzing trace with hash 51546625, now seen corresponding path program 1 times [2023-12-19 00:40:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:07,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669514404] [2023-12-19 00:40:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:08,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:08,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669514404] [2023-12-19 00:40:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669514404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:08,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:08,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:40:08,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685225514] [2023-12-19 00:40:08,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:08,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:40:08,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:08,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:40:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:40:08,038 INFO L87 Difference]: Start difference. First operand 830 states and 1540 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2023-12-19 00:40:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:08,294 INFO L93 Difference]: Finished difference Result 1240 states and 2200 transitions. [2023-12-19 00:40:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-19 00:40:08,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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 [2023-12-19 00:40:08,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:08,298 INFO L225 Difference]: With dead ends: 1240 [2023-12-19 00:40:08,298 INFO L226 Difference]: Without dead ends: 1199 [2023-12-19 00:40:08,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-19 00:40:08,301 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 7933 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:08,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 2700 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:40:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2023-12-19 00:40:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 869. [2023-12-19 00:40:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.8489042675893888) internal successors, (1603), 868 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:08,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1603 transitions. [2023-12-19 00:40:08,321 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1603 transitions. Word has length 51 [2023-12-19 00:40:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:08,326 INFO L495 AbstractCegarLoop]: Abstraction has 869 states and 1603 transitions. [2023-12-19 00:40:08,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 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) [2023-12-19 00:40:08,326 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1603 transitions. [2023-12-19 00:40:08,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:40:08,329 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:08,329 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] [2023-12-19 00:40:08,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 00:40:08,330 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:08,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2145916561, now seen corresponding path program 1 times [2023-12-19 00:40:08,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:08,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504391805] [2023-12-19 00:40:08,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:08,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:08,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504391805] [2023-12-19 00:40:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504391805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:08,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:08,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542840424] [2023-12-19 00:40:08,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:08,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:08,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:08,437 INFO L87 Difference]: Start difference. First operand 869 states and 1603 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) [2023-12-19 00:40:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:08,469 INFO L93 Difference]: Finished difference Result 1018 states and 1842 transitions. [2023-12-19 00:40:08,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:08,470 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 [2023-12-19 00:40:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:08,472 INFO L225 Difference]: With dead ends: 1018 [2023-12-19 00:40:08,472 INFO L226 Difference]: Without dead ends: 938 [2023-12-19 00:40:08,473 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 [2023-12-19 00:40:08,474 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1480 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1595 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 [2023-12-19 00:40:08,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1595 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:08,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-19 00:40:08,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-19 00:40:08,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8297644539614561) internal successors, (1709), 935 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:08,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1709 transitions. [2023-12-19 00:40:08,493 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1709 transitions. Word has length 53 [2023-12-19 00:40:08,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:08,493 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1709 transitions. [2023-12-19 00:40:08,493 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) [2023-12-19 00:40:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1709 transitions. [2023-12-19 00:40:08,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-19 00:40:08,494 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:08,494 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] [2023-12-19 00:40:08,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 00:40:08,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:08,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2146905783, now seen corresponding path program 1 times [2023-12-19 00:40:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:08,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068518467] [2023-12-19 00:40:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:08,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:08,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:08,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068518467] [2023-12-19 00:40:08,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068518467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:08,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:08,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:40:08,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071790790] [2023-12-19 00:40:08,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:08,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:40:08,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:08,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:40:08,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:40:08,732 INFO L87 Difference]: Start difference. First operand 936 states and 1709 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2023-12-19 00:40:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:08,872 INFO L93 Difference]: Finished difference Result 1085 states and 1945 transitions. [2023-12-19 00:40:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:40:08,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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 [2023-12-19 00:40:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:08,876 INFO L225 Difference]: With dead ends: 1085 [2023-12-19 00:40:08,877 INFO L226 Difference]: Without dead ends: 938 [2023-12-19 00:40:08,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-19 00:40:08,881 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 2990 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:08,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 1775 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-12-19 00:40:08,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 936. [2023-12-19 00:40:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 936 states, 934 states have (on average 1.8276231263383298) internal successors, (1707), 935 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 936 states to 936 states and 1707 transitions. [2023-12-19 00:40:08,897 INFO L78 Accepts]: Start accepts. Automaton has 936 states and 1707 transitions. Word has length 53 [2023-12-19 00:40:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:08,898 INFO L495 AbstractCegarLoop]: Abstraction has 936 states and 1707 transitions. [2023-12-19 00:40:08,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 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) [2023-12-19 00:40:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 936 states and 1707 transitions. [2023-12-19 00:40:08,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-19 00:40:08,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:08,899 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] [2023-12-19 00:40:08,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 00:40:08,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:08,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:08,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2036322024, now seen corresponding path program 1 times [2023-12-19 00:40:08,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:08,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972114366] [2023-12-19 00:40:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:08,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972114366] [2023-12-19 00:40:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972114366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:09,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:09,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 00:40:09,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812811171] [2023-12-19 00:40:09,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:09,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:40:09,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:40:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:40:09,027 INFO L87 Difference]: Start difference. First operand 936 states and 1707 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:09,053 INFO L93 Difference]: Finished difference Result 944 states and 1716 transitions. [2023-12-19 00:40:09,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:40:09,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-19 00:40:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:09,057 INFO L225 Difference]: With dead ends: 944 [2023-12-19 00:40:09,057 INFO L226 Difference]: Without dead ends: 942 [2023-12-19 00:40:09,057 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 [2023-12-19 00:40:09,062 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 1 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4600 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 [2023-12-19 00:40:09,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4600 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-12-19 00:40:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 940. [2023-12-19 00:40:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.8230277185501067) internal successors, (1710), 939 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1710 transitions. [2023-12-19 00:40:09,080 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1710 transitions. Word has length 54 [2023-12-19 00:40:09,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:09,080 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1710 transitions. [2023-12-19 00:40:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1710 transitions. [2023-12-19 00:40:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:40:09,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:09,081 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] [2023-12-19 00:40:09,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-19 00:40:09,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:09,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1922958665, now seen corresponding path program 1 times [2023-12-19 00:40:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:09,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504113122] [2023-12-19 00:40:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:09,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504113122] [2023-12-19 00:40:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504113122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:09,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832062112] [2023-12-19 00:40:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:09,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:09,137 INFO L87 Difference]: Start difference. First operand 940 states and 1710 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:09,161 INFO L93 Difference]: Finished difference Result 1102 states and 1963 transitions. [2023-12-19 00:40:09,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:09,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-19 00:40:09,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:09,165 INFO L225 Difference]: With dead ends: 1102 [2023-12-19 00:40:09,165 INFO L226 Difference]: Without dead ends: 1018 [2023-12-19 00:40:09,167 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 [2023-12-19 00:40:09,168 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1494 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1653 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 [2023-12-19 00:40:09,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:09,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2023-12-19 00:40:09,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1016. [2023-12-19 00:40:09,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1014 states have (on average 1.801775147928994) internal successors, (1827), 1015 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 1827 transitions. [2023-12-19 00:40:09,183 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 1827 transitions. Word has length 55 [2023-12-19 00:40:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:09,183 INFO L495 AbstractCegarLoop]: Abstraction has 1016 states and 1827 transitions. [2023-12-19 00:40:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 1827 transitions. [2023-12-19 00:40:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:40:09,184 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:09,184 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] [2023-12-19 00:40:09,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 00:40:09,184 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:09,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1694319433, now seen corresponding path program 1 times [2023-12-19 00:40:09,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:09,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918736532] [2023-12-19 00:40:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:09,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:09,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918736532] [2023-12-19 00:40:09,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918736532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:09,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:09,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:09,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54504488] [2023-12-19 00:40:09,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:09,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:09,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:09,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:09,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:09,225 INFO L87 Difference]: Start difference. First operand 1016 states and 1827 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:09,249 INFO L93 Difference]: Finished difference Result 1442 states and 2487 transitions. [2023-12-19 00:40:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:09,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-19 00:40:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:09,254 INFO L225 Difference]: With dead ends: 1442 [2023-12-19 00:40:09,254 INFO L226 Difference]: Without dead ends: 1217 [2023-12-19 00:40:09,254 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 [2023-12-19 00:40:09,255 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 1490 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1653 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 [2023-12-19 00:40:09,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1653 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-12-19 00:40:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2023-12-19 00:40:09,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 1213 states have (on average 1.7551525144270403) internal successors, (2129), 1214 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 2129 transitions. [2023-12-19 00:40:09,273 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 2129 transitions. Word has length 55 [2023-12-19 00:40:09,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:09,274 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 2129 transitions. [2023-12-19 00:40:09,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 2129 transitions. [2023-12-19 00:40:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:40:09,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:09,275 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] [2023-12-19 00:40:09,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 00:40:09,275 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:09,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1068663369, now seen corresponding path program 1 times [2023-12-19 00:40:09,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:09,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596224148] [2023-12-19 00:40:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:09,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:09,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596224148] [2023-12-19 00:40:09,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596224148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:09,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:09,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:09,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611138774] [2023-12-19 00:40:09,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:09,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:09,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:09,317 INFO L87 Difference]: Start difference. First operand 1215 states and 2129 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:09,342 INFO L93 Difference]: Finished difference Result 2015 states and 3351 transitions. [2023-12-19 00:40:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:09,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-19 00:40:09,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:09,346 INFO L225 Difference]: With dead ends: 2015 [2023-12-19 00:40:09,347 INFO L226 Difference]: Without dead ends: 1591 [2023-12-19 00:40:09,347 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 [2023-12-19 00:40:09,349 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1488 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1655 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 [2023-12-19 00:40:09,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1655 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2023-12-19 00:40:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2023-12-19 00:40:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1587 states have (on average 1.6918714555765595) internal successors, (2685), 1588 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2685 transitions. [2023-12-19 00:40:09,412 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2685 transitions. Word has length 55 [2023-12-19 00:40:09,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:09,413 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2685 transitions. [2023-12-19 00:40:09,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2685 transitions. [2023-12-19 00:40:09,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:40:09,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:09,414 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] [2023-12-19 00:40:09,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 00:40:09,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:09,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:09,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1957396809, now seen corresponding path program 1 times [2023-12-19 00:40:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:09,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532389580] [2023-12-19 00:40:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:09,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532389580] [2023-12-19 00:40:09,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532389580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:09,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:09,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:09,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454768209] [2023-12-19 00:40:09,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:09,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:09,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:09,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:09,450 INFO L87 Difference]: Start difference. First operand 1589 states and 2685 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:09,486 INFO L93 Difference]: Finished difference Result 3089 states and 4935 transitions. [2023-12-19 00:40:09,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:09,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-19 00:40:09,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:09,493 INFO L225 Difference]: With dead ends: 3089 [2023-12-19 00:40:09,493 INFO L226 Difference]: Without dead ends: 2291 [2023-12-19 00:40:09,494 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 [2023-12-19 00:40:09,495 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 1486 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1657 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 [2023-12-19 00:40:09,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1657 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2023-12-19 00:40:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2289. [2023-12-19 00:40:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2287 states have (on average 1.6182772190642762) internal successors, (3701), 2288 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3701 transitions. [2023-12-19 00:40:09,542 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3701 transitions. Word has length 55 [2023-12-19 00:40:09,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:09,542 INFO L495 AbstractCegarLoop]: Abstraction has 2289 states and 3701 transitions. [2023-12-19 00:40:09,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3701 transitions. [2023-12-19 00:40:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-19 00:40:09,542 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:09,542 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] [2023-12-19 00:40:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 00:40:09,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:09,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:09,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1654375497, now seen corresponding path program 1 times [2023-12-19 00:40:09,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:09,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402415766] [2023-12-19 00:40:09,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:09,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:09,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:09,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402415766] [2023-12-19 00:40:09,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402415766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:09,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:09,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946798147] [2023-12-19 00:40:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:09,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:09,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:09,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:09,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:09,581 INFO L87 Difference]: Start difference. First operand 2289 states and 3701 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:09,628 INFO L93 Difference]: Finished difference Result 5093 states and 7815 transitions. [2023-12-19 00:40:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:09,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 [2023-12-19 00:40:09,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:09,637 INFO L225 Difference]: With dead ends: 5093 [2023-12-19 00:40:09,637 INFO L226 Difference]: Without dead ends: 3595 [2023-12-19 00:40:09,640 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 [2023-12-19 00:40:09,641 INFO L413 NwaCegarLoop]: 1589 mSDtfsCounter, 1492 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1659 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 [2023-12-19 00:40:09,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1659 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2023-12-19 00:40:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2023-12-19 00:40:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3591 states have (on average 1.5430242272347536) internal successors, (5541), 3592 states have internal predecessors, (5541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 5541 transitions. [2023-12-19 00:40:09,705 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 5541 transitions. Word has length 55 [2023-12-19 00:40:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:09,705 INFO L495 AbstractCegarLoop]: Abstraction has 3593 states and 5541 transitions. [2023-12-19 00:40:09,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 5541 transitions. [2023-12-19 00:40:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-19 00:40:09,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:09,706 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, 1] [2023-12-19 00:40:09,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 00:40:09,706 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:09,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:09,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2135574669, now seen corresponding path program 1 times [2023-12-19 00:40:09,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:09,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298119266] [2023-12-19 00:40:09,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:09,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:09,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:09,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298119266] [2023-12-19 00:40:09,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298119266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:09,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:09,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 00:40:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454612330] [2023-12-19 00:40:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:09,749 INFO L87 Difference]: Start difference. First operand 3593 states and 5541 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:12,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:12,670 INFO L93 Difference]: Finished difference Result 5097 states and 8414 transitions. [2023-12-19 00:40:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:12,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-12-19 00:40:12,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:12,681 INFO L225 Difference]: With dead ends: 5097 [2023-12-19 00:40:12,681 INFO L226 Difference]: Without dead ends: 4344 [2023-12-19 00:40:12,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:12,685 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 856 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2280 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:12,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 175 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2280 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 00:40:12,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2023-12-19 00:40:12,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4344. [2023-12-19 00:40:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4344 states, 4342 states have (on average 1.592814371257485) internal successors, (6916), 4343 states have internal predecessors, (6916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4344 states to 4344 states and 6916 transitions. [2023-12-19 00:40:12,759 INFO L78 Accepts]: Start accepts. Automaton has 4344 states and 6916 transitions. Word has length 60 [2023-12-19 00:40:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:12,760 INFO L495 AbstractCegarLoop]: Abstraction has 4344 states and 6916 transitions. [2023-12-19 00:40:12,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:12,760 INFO L276 IsEmpty]: Start isEmpty. Operand 4344 states and 6916 transitions. [2023-12-19 00:40:12,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:40:12,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:12,761 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:12,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 00:40:12,761 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:12,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:12,762 INFO L85 PathProgramCache]: Analyzing trace with hash 285878162, now seen corresponding path program 1 times [2023-12-19 00:40:12,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:12,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047619590] [2023-12-19 00:40:12,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:12,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:40:12,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:12,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047619590] [2023-12-19 00:40:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047619590] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:12,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:12,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:40:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669065683] [2023-12-19 00:40:12,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:12,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:40:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:40:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:40:12,868 INFO L87 Difference]: Start difference. First operand 4344 states and 6916 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:13,159 INFO L93 Difference]: Finished difference Result 18132 states and 26906 transitions. [2023-12-19 00:40:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:40:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 73 [2023-12-19 00:40:13,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:13,190 INFO L225 Difference]: With dead ends: 18132 [2023-12-19 00:40:13,190 INFO L226 Difference]: Without dead ends: 16146 [2023-12-19 00:40:13,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:40:13,197 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6293 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6293 SdHoareTripleChecker+Valid, 3541 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:13,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6293 Valid, 3541 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:40:13,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16146 states. [2023-12-19 00:40:13,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16146 to 6744. [2023-12-19 00:40:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6744 states, 6742 states have (on average 1.5360427172945714) internal successors, (10356), 6743 states have internal predecessors, (10356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:13,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6744 states to 6744 states and 10356 transitions. [2023-12-19 00:40:13,470 INFO L78 Accepts]: Start accepts. Automaton has 6744 states and 10356 transitions. Word has length 73 [2023-12-19 00:40:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:13,470 INFO L495 AbstractCegarLoop]: Abstraction has 6744 states and 10356 transitions. [2023-12-19 00:40:13,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6744 states and 10356 transitions. [2023-12-19 00:40:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:40:13,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:13,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:13,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-19 00:40:13,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:13,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash 57238930, now seen corresponding path program 1 times [2023-12-19 00:40:13,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:13,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60116557] [2023-12-19 00:40:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:13,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-19 00:40:13,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:13,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60116557] [2023-12-19 00:40:13,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60116557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:13,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:13,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:40:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702272085] [2023-12-19 00:40:13,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:13,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:40:13,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:40:13,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:40:13,581 INFO L87 Difference]: Start difference. First operand 6744 states and 10356 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:13,946 INFO L93 Difference]: Finished difference Result 20932 states and 30938 transitions. [2023-12-19 00:40:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:40:13,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 73 [2023-12-19 00:40:13,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:13,973 INFO L225 Difference]: With dead ends: 20932 [2023-12-19 00:40:13,973 INFO L226 Difference]: Without dead ends: 18130 [2023-12-19 00:40:13,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:40:13,982 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 6336 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6336 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:13,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6336 Valid, 3592 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:40:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18130 states. [2023-12-19 00:40:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18130 to 10536. [2023-12-19 00:40:14,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10534 states have (on average 1.49800645528764) internal successors, (15780), 10535 states have internal predecessors, (15780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:14,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15780 transitions. [2023-12-19 00:40:14,240 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15780 transitions. Word has length 73 [2023-12-19 00:40:14,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:14,241 INFO L495 AbstractCegarLoop]: Abstraction has 10536 states and 15780 transitions. [2023-12-19 00:40:14,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15780 transitions. [2023-12-19 00:40:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:40:14,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:14,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:14,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 00:40:14,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:14,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:14,243 INFO L85 PathProgramCache]: Analyzing trace with hash -568417134, now seen corresponding path program 1 times [2023-12-19 00:40:14,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756648936] [2023-12-19 00:40:14,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:14,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-19 00:40:14,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:14,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756648936] [2023-12-19 00:40:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756648936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:14,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:40:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233382855] [2023-12-19 00:40:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:14,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:40:14,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:40:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:40:14,345 INFO L87 Difference]: Start difference. First operand 10536 states and 15780 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:14,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:14,777 INFO L93 Difference]: Finished difference Result 23732 states and 34954 transitions. [2023-12-19 00:40:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:40:14,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 73 [2023-12-19 00:40:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:14,808 INFO L225 Difference]: With dead ends: 23732 [2023-12-19 00:40:14,808 INFO L226 Difference]: Without dead ends: 20930 [2023-12-19 00:40:14,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:40:14,818 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6381 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6381 SdHoareTripleChecker+Valid, 3555 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:14,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6381 Valid, 3555 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:40:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20930 states. [2023-12-19 00:40:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20930 to 13336. [2023-12-19 00:40:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13336 states, 13334 states have (on average 1.4846257687115645) internal successors, (19796), 13335 states have internal predecessors, (19796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13336 states to 13336 states and 19796 transitions. [2023-12-19 00:40:15,128 INFO L78 Accepts]: Start accepts. Automaton has 13336 states and 19796 transitions. Word has length 73 [2023-12-19 00:40:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:15,128 INFO L495 AbstractCegarLoop]: Abstraction has 13336 states and 19796 transitions. [2023-12-19 00:40:15,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 13336 states and 19796 transitions. [2023-12-19 00:40:15,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:40:15,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:15,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 00:40:15,131 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:15,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash 320316306, now seen corresponding path program 1 times [2023-12-19 00:40:15,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:15,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181218741] [2023-12-19 00:40:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:15,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-19 00:40:15,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:15,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181218741] [2023-12-19 00:40:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181218741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:15,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:15,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:40:15,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679591125] [2023-12-19 00:40:15,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:15,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:40:15,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:15,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:40:15,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:40:15,248 INFO L87 Difference]: Start difference. First operand 13336 states and 19796 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:15,642 INFO L93 Difference]: Finished difference Result 26532 states and 38970 transitions. [2023-12-19 00:40:15,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:40:15,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 73 [2023-12-19 00:40:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:15,672 INFO L225 Difference]: With dead ends: 26532 [2023-12-19 00:40:15,672 INFO L226 Difference]: Without dead ends: 23730 [2023-12-19 00:40:15,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:40:15,682 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 6341 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6341 SdHoareTripleChecker+Valid, 3577 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:15,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6341 Valid, 3577 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:40:15,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23730 states. [2023-12-19 00:40:15,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23730 to 16136. [2023-12-19 00:40:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16136 states, 16134 states have (on average 1.4758894260567745) internal successors, (23812), 16135 states have internal predecessors, (23812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16136 states to 16136 states and 23812 transitions. [2023-12-19 00:40:16,022 INFO L78 Accepts]: Start accepts. Automaton has 16136 states and 23812 transitions. Word has length 73 [2023-12-19 00:40:16,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:16,022 INFO L495 AbstractCegarLoop]: Abstraction has 16136 states and 23812 transitions. [2023-12-19 00:40:16,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:16,022 INFO L276 IsEmpty]: Start isEmpty. Operand 16136 states and 23812 transitions. [2023-12-19 00:40:16,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-19 00:40:16,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:16,026 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:16,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-19 00:40:16,026 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:16,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:16,027 INFO L85 PathProgramCache]: Analyzing trace with hash 17294994, now seen corresponding path program 1 times [2023-12-19 00:40:16,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:16,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129678841] [2023-12-19 00:40:16,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:16,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-19 00:40:16,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:16,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129678841] [2023-12-19 00:40:16,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129678841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:16,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:16,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-19 00:40:16,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29205583] [2023-12-19 00:40:16,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:16,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-19 00:40:16,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:16,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-19 00:40:16,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-19 00:40:16,135 INFO L87 Difference]: Start difference. First operand 16136 states and 23812 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:16,599 INFO L93 Difference]: Finished difference Result 29332 states and 42986 transitions. [2023-12-19 00:40:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-19 00:40:16,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 73 [2023-12-19 00:40:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:16,641 INFO L225 Difference]: With dead ends: 29332 [2023-12-19 00:40:16,641 INFO L226 Difference]: Without dead ends: 26530 [2023-12-19 00:40:16,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-19 00:40:16,652 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 6295 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6295 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:16,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6295 Valid, 3651 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-19 00:40:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26530 states. [2023-12-19 00:40:17,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26530 to 18936. [2023-12-19 00:40:17,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.469736981092215) internal successors, (27828), 18935 states have internal predecessors, (27828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27828 transitions. [2023-12-19 00:40:17,169 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27828 transitions. Word has length 73 [2023-12-19 00:40:17,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:17,169 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27828 transitions. [2023-12-19 00:40:17,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27828 transitions. [2023-12-19 00:40:17,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-19 00:40:17,171 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:17,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-19 00:40:17,172 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:17,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1436271534, now seen corresponding path program 1 times [2023-12-19 00:40:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039146473] [2023-12-19 00:40:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:17,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:17,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039146473] [2023-12-19 00:40:17,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039146473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:17,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:17,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:17,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929863833] [2023-12-19 00:40:17,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:17,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:17,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:17,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:17,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:17,236 INFO L87 Difference]: Start difference. First operand 18936 states and 27828 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:17,569 INFO L93 Difference]: Finished difference Result 36332 states and 52806 transitions. [2023-12-19 00:40:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:17,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-19 00:40:17,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:17,594 INFO L225 Difference]: With dead ends: 36332 [2023-12-19 00:40:17,594 INFO L226 Difference]: Without dead ends: 18938 [2023-12-19 00:40:17,610 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 [2023-12-19 00:40:17,610 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 45 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3097 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:17,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3097 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18938 states. [2023-12-19 00:40:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18938 to 18936. [2023-12-19 00:40:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18936 states, 18934 states have (on average 1.4541037287419456) internal successors, (27532), 18935 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18936 states to 18936 states and 27532 transitions. [2023-12-19 00:40:18,051 INFO L78 Accepts]: Start accepts. Automaton has 18936 states and 27532 transitions. Word has length 74 [2023-12-19 00:40:18,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:18,051 INFO L495 AbstractCegarLoop]: Abstraction has 18936 states and 27532 transitions. [2023-12-19 00:40:18,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 18936 states and 27532 transitions. [2023-12-19 00:40:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-19 00:40:18,053 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:18,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:18,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 00:40:18,053 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:18,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash -702984806, now seen corresponding path program 1 times [2023-12-19 00:40:18,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:18,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678754] [2023-12-19 00:40:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:18,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:18,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678754] [2023-12-19 00:40:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678754] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:18,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360899100] [2023-12-19 00:40:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:18,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:18,112 INFO L87 Difference]: Start difference. First operand 18936 states and 27532 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:18,243 INFO L93 Difference]: Finished difference Result 25406 states and 36809 transitions. [2023-12-19 00:40:18,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:18,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-12-19 00:40:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:18,253 INFO L225 Difference]: With dead ends: 25406 [2023-12-19 00:40:18,253 INFO L226 Difference]: Without dead ends: 8012 [2023-12-19 00:40:18,266 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 [2023-12-19 00:40:18,267 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 39 mSDsluCounter, 1525 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3094 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:18,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3094 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:18,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2023-12-19 00:40:18,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 8005. [2023-12-19 00:40:18,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8005 states, 8003 states have (on average 1.5015619142821441) internal successors, (12017), 8004 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8005 states to 8005 states and 12017 transitions. [2023-12-19 00:40:18,407 INFO L78 Accepts]: Start accepts. Automaton has 8005 states and 12017 transitions. Word has length 75 [2023-12-19 00:40:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:18,407 INFO L495 AbstractCegarLoop]: Abstraction has 8005 states and 12017 transitions. [2023-12-19 00:40:18,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 8005 states and 12017 transitions. [2023-12-19 00:40:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-19 00:40:18,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:18,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:18,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 00:40:18,409 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:18,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:18,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1790502652, now seen corresponding path program 1 times [2023-12-19 00:40:18,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:18,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919475354] [2023-12-19 00:40:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:18,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:18,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919475354] [2023-12-19 00:40:18,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919475354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:18,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:18,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:18,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358215246] [2023-12-19 00:40:18,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:18,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:18,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:18,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:18,468 INFO L87 Difference]: Start difference. First operand 8005 states and 12017 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:18,534 INFO L93 Difference]: Finished difference Result 11233 states and 16595 transitions. [2023-12-19 00:40:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:18,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-19 00:40:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:18,540 INFO L225 Difference]: With dead ends: 11233 [2023-12-19 00:40:18,540 INFO L226 Difference]: Without dead ends: 4783 [2023-12-19 00:40:18,545 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 [2023-12-19 00:40:18,546 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 41 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:18,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3073 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:18,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2023-12-19 00:40:18,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 4781. [2023-12-19 00:40:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4781 states, 4779 states have (on average 1.5461393596986817) internal successors, (7389), 4780 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4781 states to 4781 states and 7389 transitions. [2023-12-19 00:40:18,617 INFO L78 Accepts]: Start accepts. Automaton has 4781 states and 7389 transitions. Word has length 76 [2023-12-19 00:40:18,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:18,617 INFO L495 AbstractCegarLoop]: Abstraction has 4781 states and 7389 transitions. [2023-12-19 00:40:18,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4781 states and 7389 transitions. [2023-12-19 00:40:18,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-19 00:40:18,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:18,618 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:18,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 00:40:18,619 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:18,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:18,620 INFO L85 PathProgramCache]: Analyzing trace with hash -626519094, now seen corresponding path program 1 times [2023-12-19 00:40:18,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:18,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664592716] [2023-12-19 00:40:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:18,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:18,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:18,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664592716] [2023-12-19 00:40:18,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664592716] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:18,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:18,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:18,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182990388] [2023-12-19 00:40:18,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:18,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:18,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:18,687 INFO L87 Difference]: Start difference. First operand 4781 states and 7389 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:18,729 INFO L93 Difference]: Finished difference Result 6397 states and 9653 transitions. [2023-12-19 00:40:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:18,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-19 00:40:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:18,733 INFO L225 Difference]: With dead ends: 6397 [2023-12-19 00:40:18,733 INFO L226 Difference]: Without dead ends: 3171 [2023-12-19 00:40:18,737 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 [2023-12-19 00:40:18,737 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 38 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:18,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3058 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:18,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2023-12-19 00:40:18,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3169. [2023-12-19 00:40:18,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3169 states, 3167 states have (on average 1.6106725607830754) internal successors, (5101), 3168 states have internal predecessors, (5101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3169 states to 3169 states and 5101 transitions. [2023-12-19 00:40:18,781 INFO L78 Accepts]: Start accepts. Automaton has 3169 states and 5101 transitions. Word has length 78 [2023-12-19 00:40:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:18,781 INFO L495 AbstractCegarLoop]: Abstraction has 3169 states and 5101 transitions. [2023-12-19 00:40:18,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3169 states and 5101 transitions. [2023-12-19 00:40:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-19 00:40:18,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:18,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:18,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 00:40:18,783 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:18,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash 439495192, now seen corresponding path program 1 times [2023-12-19 00:40:18,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:18,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527847660] [2023-12-19 00:40:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:18,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:18,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:18,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527847660] [2023-12-19 00:40:18,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527847660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:40:18,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:40:18,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:40:18,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909255638] [2023-12-19 00:40:18,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:40:18,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 00:40:18,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:18,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 00:40:18,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 00:40:18,864 INFO L87 Difference]: Start difference. First operand 3169 states and 5101 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:18,893 INFO L93 Difference]: Finished difference Result 3979 states and 6221 transitions. [2023-12-19 00:40:18,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 00:40:18,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-19 00:40:18,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:18,896 INFO L225 Difference]: With dead ends: 3979 [2023-12-19 00:40:18,896 INFO L226 Difference]: Without dead ends: 2365 [2023-12-19 00:40:18,897 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 [2023-12-19 00:40:18,898 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 35 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:18,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-19 00:40:18,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-19 00:40:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2023-12-19 00:40:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2361 states have (on average 1.6814908936891149) internal successors, (3970), 2362 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3970 transitions. [2023-12-19 00:40:18,926 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3970 transitions. Word has length 80 [2023-12-19 00:40:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:18,927 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3970 transitions. [2023-12-19 00:40:18,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3970 transitions. [2023-12-19 00:40:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-19 00:40:18,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:18,927 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:18,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 00:40:18,928 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:18,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash 397937126, now seen corresponding path program 1 times [2023-12-19 00:40:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947728370] [2023-12-19 00:40:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:18,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:19,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947728370] [2023-12-19 00:40:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947728370] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:40:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121997058] [2023-12-19 00:40:19,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:19,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:40:19,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:40:19,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:40:19,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-19 00:40:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:19,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-19 00:40:19,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:40:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:40:19,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:40:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-19 00:40:19,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121997058] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:40:19,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:40:19,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-19 00:40:19,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781742370] [2023-12-19 00:40:19,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:40:19,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-19 00:40:19,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:19,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-19 00:40:19,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-19 00:40:19,992 INFO L87 Difference]: Start difference. First operand 2363 states and 3970 transitions. Second operand has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:21,760 INFO L93 Difference]: Finished difference Result 8864 states and 12692 transitions. [2023-12-19 00:40:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-19 00:40:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-12-19 00:40:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:21,768 INFO L225 Difference]: With dead ends: 8864 [2023-12-19 00:40:21,768 INFO L226 Difference]: Without dead ends: 8056 [2023-12-19 00:40:21,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=747, Invalid=3285, Unknown=0, NotChecked=0, Total=4032 [2023-12-19 00:40:21,772 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 12472 mSDsluCounter, 6347 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12472 SdHoareTripleChecker+Valid, 7857 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:21,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12472 Valid, 7857 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-19 00:40:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2023-12-19 00:40:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 7656. [2023-12-19 00:40:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 7654 states have (on average 1.420825712045989) internal successors, (10875), 7655 states have internal predecessors, (10875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 10875 transitions. [2023-12-19 00:40:21,959 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 10875 transitions. Word has length 82 [2023-12-19 00:40:21,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:21,959 INFO L495 AbstractCegarLoop]: Abstraction has 7656 states and 10875 transitions. [2023-12-19 00:40:21,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.88888888888889) internal successors, (232), 18 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:21,962 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 10875 transitions. [2023-12-19 00:40:21,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 00:40:21,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:21,963 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:21,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 00:40:22,168 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,SelfDestructingSolverStorable22 [2023-12-19 00:40:22,168 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:22,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1527392688, now seen corresponding path program 1 times [2023-12-19 00:40:22,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:22,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365640970] [2023-12-19 00:40:22,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:22,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:22,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:22,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:22,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365640970] [2023-12-19 00:40:22,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365640970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:40:22,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686543206] [2023-12-19 00:40:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:22,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:40:22,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:40:22,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:40:22,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-19 00:40:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:22,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:40:22,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:40:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:22,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:40:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:23,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686543206] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:40:23,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:40:23,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-12-19 00:40:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239757467] [2023-12-19 00:40:23,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:40:23,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-19 00:40:23,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-19 00:40:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-12-19 00:40:23,706 INFO L87 Difference]: Start difference. First operand 7656 states and 10875 transitions. Second operand has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:24,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:24,447 INFO L93 Difference]: Finished difference Result 18478 states and 24887 transitions. [2023-12-19 00:40:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-19 00:40:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 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 83 [2023-12-19 00:40:24,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:24,461 INFO L225 Difference]: With dead ends: 18478 [2023-12-19 00:40:24,461 INFO L226 Difference]: Without dead ends: 12635 [2023-12-19 00:40:24,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2023-12-19 00:40:24,467 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 7856 mSDsluCounter, 9399 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7856 SdHoareTripleChecker+Valid, 10907 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:24,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7856 Valid, 10907 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:40:24,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12635 states. [2023-12-19 00:40:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12635 to 12183. [2023-12-19 00:40:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12183 states, 12181 states have (on average 1.3700024628519827) internal successors, (16688), 12182 states have internal predecessors, (16688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12183 states to 12183 states and 16688 transitions. [2023-12-19 00:40:24,755 INFO L78 Accepts]: Start accepts. Automaton has 12183 states and 16688 transitions. Word has length 83 [2023-12-19 00:40:24,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:24,755 INFO L495 AbstractCegarLoop]: Abstraction has 12183 states and 16688 transitions. [2023-12-19 00:40:24,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.0) internal successors, (216), 27 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:24,755 INFO L276 IsEmpty]: Start isEmpty. Operand 12183 states and 16688 transitions. [2023-12-19 00:40:24,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-19 00:40:24,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:24,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:24,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-19 00:40:24,961 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,SelfDestructingSolverStorable23 [2023-12-19 00:40:24,962 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:24,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash 577648048, now seen corresponding path program 1 times [2023-12-19 00:40:24,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:24,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719807997] [2023-12-19 00:40:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:25,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719807997] [2023-12-19 00:40:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719807997] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:40:25,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466277565] [2023-12-19 00:40:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:25,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:40:25,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:40:25,250 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:40:25,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-19 00:40:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:25,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-19 00:40:25,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:40:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:25,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:40:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:26,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466277565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:40:26,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:40:26,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-12-19 00:40:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427570140] [2023-12-19 00:40:26,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:40:26,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-19 00:40:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-19 00:40:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-12-19 00:40:26,465 INFO L87 Difference]: Start difference. First operand 12183 states and 16688 transitions. Second operand has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:28,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:28,611 INFO L93 Difference]: Finished difference Result 34993 states and 46191 transitions. [2023-12-19 00:40:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-19 00:40:28,611 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 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 83 [2023-12-19 00:40:28,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:28,639 INFO L225 Difference]: With dead ends: 34993 [2023-12-19 00:40:28,639 INFO L226 Difference]: Without dead ends: 25139 [2023-12-19 00:40:28,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=687, Invalid=2619, Unknown=0, NotChecked=0, Total=3306 [2023-12-19 00:40:28,646 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 19080 mSDsluCounter, 6602 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19080 SdHoareTripleChecker+Valid, 8120 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:28,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19080 Valid, 8120 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:40:28,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25139 states. [2023-12-19 00:40:29,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25139 to 21667. [2023-12-19 00:40:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21667 states, 21665 states have (on average 1.30408492960997) internal successors, (28253), 21666 states have internal predecessors, (28253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:29,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21667 states to 21667 states and 28253 transitions. [2023-12-19 00:40:29,197 INFO L78 Accepts]: Start accepts. Automaton has 21667 states and 28253 transitions. Word has length 83 [2023-12-19 00:40:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:29,197 INFO L495 AbstractCegarLoop]: Abstraction has 21667 states and 28253 transitions. [2023-12-19 00:40:29,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.625) internal successors, (231), 23 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 21667 states and 28253 transitions. [2023-12-19 00:40:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-19 00:40:29,198 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:29,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:29,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-19 00:40:29,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:40:29,405 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:29,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:29,406 INFO L85 PathProgramCache]: Analyzing trace with hash 967990340, now seen corresponding path program 1 times [2023-12-19 00:40:29,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:29,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241449878] [2023-12-19 00:40:29,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:29,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:29,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:29,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241449878] [2023-12-19 00:40:29,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241449878] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:40:29,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781539364] [2023-12-19 00:40:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:29,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:40:29,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:40:29,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-19 00:40:29,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-19 00:40:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:29,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-19 00:40:29,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:40:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:30,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:40:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:30,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781539364] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:40:30,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:40:30,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-12-19 00:40:30,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251951445] [2023-12-19 00:40:30,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:40:30,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-19 00:40:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-19 00:40:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-12-19 00:40:30,747 INFO L87 Difference]: Start difference. First operand 21667 states and 28253 transitions. Second operand has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:34,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:40:34,230 INFO L93 Difference]: Finished difference Result 108438 states and 137665 transitions. [2023-12-19 00:40:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-19 00:40:34,231 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-12-19 00:40:34,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:40:34,319 INFO L225 Difference]: With dead ends: 108438 [2023-12-19 00:40:34,319 INFO L226 Difference]: Without dead ends: 88733 [2023-12-19 00:40:34,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=553, Invalid=2417, Unknown=0, NotChecked=0, Total=2970 [2023-12-19 00:40:34,335 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 17079 mSDsluCounter, 7388 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17079 SdHoareTripleChecker+Valid, 8961 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-19 00:40:34,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17079 Valid, 8961 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-19 00:40:34,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88733 states. [2023-12-19 00:40:36,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88733 to 83705. [2023-12-19 00:40:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83705 states, 83703 states have (on average 1.246872871940074) internal successors, (104367), 83704 states have internal predecessors, (104367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83705 states to 83705 states and 104367 transitions. [2023-12-19 00:40:36,984 INFO L78 Accepts]: Start accepts. Automaton has 83705 states and 104367 transitions. Word has length 84 [2023-12-19 00:40:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:40:36,985 INFO L495 AbstractCegarLoop]: Abstraction has 83705 states and 104367 transitions. [2023-12-19 00:40:36,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.6) internal successors, (215), 24 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:40:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 83705 states and 104367 transitions. [2023-12-19 00:40:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:40:37,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:40:37,012 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:40:37,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-19 00:40:37,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-19 00:40:37,213 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:40:37,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:40:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1688504568, now seen corresponding path program 1 times [2023-12-19 00:40:37,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:40:37,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277795233] [2023-12-19 00:40:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:37,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:40:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:37,973 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:37,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:40:37,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277795233] [2023-12-19 00:40:37,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277795233] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:40:37,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146474429] [2023-12-19 00:40:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:40:37,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:40:37,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:40:37,975 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) [2023-12-19 00:40:37,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-19 00:40:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:40:38,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-19 00:40:38,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:40:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:39,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:40:41,461 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:40:41,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146474429] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:40:41,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:40:41,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 15] total 42 [2023-12-19 00:40:41,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191260046] [2023-12-19 00:40:41,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:40:41,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-19 00:40:41,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:40:41,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-19 00:40:41,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2023-12-19 00:40:41,463 INFO L87 Difference]: Start difference. First operand 83705 states and 104367 transitions. Second operand has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:11,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:41:11,858 INFO L93 Difference]: Finished difference Result 203016 states and 252017 transitions. [2023-12-19 00:41:11,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-12-19 00:41:11,858 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 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 86 [2023-12-19 00:41:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:41:12,026 INFO L225 Difference]: With dead ends: 203016 [2023-12-19 00:41:12,026 INFO L226 Difference]: Without dead ends: 159399 [2023-12-19 00:41:12,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24222 ImplicationChecksByTransitivity, 24.9s TimeCoverageRelationStatistics Valid=8183, Invalid=53569, Unknown=0, NotChecked=0, Total=61752 [2023-12-19 00:41:12,058 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 21388 mSDsluCounter, 25517 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21388 SdHoareTripleChecker+Valid, 27094 SdHoareTripleChecker+Invalid, 3776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:41:12,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21388 Valid, 27094 Invalid, 3776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [179 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 00:41:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159399 states. [2023-12-19 00:41:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159399 to 88693. [2023-12-19 00:41:15,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88693 states, 88691 states have (on average 1.2492699371976863) internal successors, (110799), 88692 states have internal predecessors, (110799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88693 states to 88693 states and 110799 transitions. [2023-12-19 00:41:15,702 INFO L78 Accepts]: Start accepts. Automaton has 88693 states and 110799 transitions. Word has length 86 [2023-12-19 00:41:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:41:15,702 INFO L495 AbstractCegarLoop]: Abstraction has 88693 states and 110799 transitions. [2023-12-19 00:41:15,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.571428571428571) internal successors, (234), 42 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 88693 states and 110799 transitions. [2023-12-19 00:41:15,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-19 00:41:15,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:41:15,704 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:41:15,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-19 00:41:15,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-19 00:41:15,910 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:41:15,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:41:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1087565028, now seen corresponding path program 1 times [2023-12-19 00:41:15,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:41:15,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325556848] [2023-12-19 00:41:15,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:15,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:41:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:16,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:41:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325556848] [2023-12-19 00:41:16,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325556848] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:41:16,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969572675] [2023-12-19 00:41:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:16,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:41:16,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:41:16,323 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) [2023-12-19 00:41:16,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-19 00:41:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:16,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-19 00:41:16,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:41:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:17,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:41:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:17,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969572675] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:41:17,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:41:17,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-19 00:41:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39081556] [2023-12-19 00:41:17,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:41:17,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-19 00:41:17,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:41:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-19 00:41:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2023-12-19 00:41:17,874 INFO L87 Difference]: Start difference. First operand 88693 states and 110799 transitions. Second operand has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:21,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:41:21,486 INFO L93 Difference]: Finished difference Result 110147 states and 137300 transitions. [2023-12-19 00:41:21,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-19 00:41:21,486 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 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 86 [2023-12-19 00:41:21,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:41:21,574 INFO L225 Difference]: With dead ends: 110147 [2023-12-19 00:41:21,574 INFO L226 Difference]: Without dead ends: 80233 [2023-12-19 00:41:21,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=544, Invalid=1906, Unknown=0, NotChecked=0, Total=2450 [2023-12-19 00:41:21,593 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 10055 mSDsluCounter, 13709 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10055 SdHoareTripleChecker+Valid, 15219 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:41:21,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10055 Valid, 15219 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-19 00:41:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80233 states. [2023-12-19 00:41:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80233 to 78735. [2023-12-19 00:41:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78735 states, 78733 states have (on average 1.2455387194695997) internal successors, (98065), 78734 states have internal predecessors, (98065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78735 states to 78735 states and 98065 transitions. [2023-12-19 00:41:24,840 INFO L78 Accepts]: Start accepts. Automaton has 78735 states and 98065 transitions. Word has length 86 [2023-12-19 00:41:24,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:41:24,840 INFO L495 AbstractCegarLoop]: Abstraction has 78735 states and 98065 transitions. [2023-12-19 00:41:24,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.3125) internal successors, (202), 32 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:24,840 INFO L276 IsEmpty]: Start isEmpty. Operand 78735 states and 98065 transitions. [2023-12-19 00:41:24,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-19 00:41:24,841 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:41:24,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:41:24,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-19 00:41:25,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-19 00:41:25,047 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:41:25,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:41:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1287109414, now seen corresponding path program 1 times [2023-12-19 00:41:25,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:41:25,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877658827] [2023-12-19 00:41:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:25,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:41:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:26,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:41:26,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877658827] [2023-12-19 00:41:26,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877658827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:41:26,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235362937] [2023-12-19 00:41:26,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:26,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:41:26,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:41:26,724 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) [2023-12-19 00:41:26,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-19 00:41:26,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:26,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-19 00:41:26,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:41:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:27,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:41:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:28,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235362937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:41:28,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:41:28,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 43 [2023-12-19 00:41:28,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887020767] [2023-12-19 00:41:28,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:41:28,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-19 00:41:28,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:41:28,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-19 00:41:28,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2023-12-19 00:41:28,755 INFO L87 Difference]: Start difference. First operand 78735 states and 98065 transitions. Second operand has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:41,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:41:41,968 INFO L93 Difference]: Finished difference Result 204545 states and 253527 transitions. [2023-12-19 00:41:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-19 00:41:41,969 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 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 87 [2023-12-19 00:41:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:41:42,159 INFO L225 Difference]: With dead ends: 204545 [2023-12-19 00:41:42,159 INFO L226 Difference]: Without dead ends: 174881 [2023-12-19 00:41:42,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5249 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=3496, Invalid=13274, Unknown=0, NotChecked=0, Total=16770 [2023-12-19 00:41:42,187 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 20705 mSDsluCounter, 20380 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20705 SdHoareTripleChecker+Valid, 21928 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:41:42,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20705 Valid, 21928 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 00:41:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174881 states. [2023-12-19 00:41:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174881 to 69014. [2023-12-19 00:41:45,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69014 states, 69012 states have (on average 1.2468845997797484) internal successors, (86050), 69013 states have internal predecessors, (86050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69014 states to 69014 states and 86050 transitions. [2023-12-19 00:41:45,834 INFO L78 Accepts]: Start accepts. Automaton has 69014 states and 86050 transitions. Word has length 87 [2023-12-19 00:41:45,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:41:45,834 INFO L495 AbstractCegarLoop]: Abstraction has 69014 states and 86050 transitions. [2023-12-19 00:41:45,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.558139534883721) internal successors, (239), 43 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 69014 states and 86050 transitions. [2023-12-19 00:41:45,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-19 00:41:45,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:41:45,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:41:45,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-19 00:41:46,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:41:46,054 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:41:46,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:41:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash 92502238, now seen corresponding path program 1 times [2023-12-19 00:41:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:41:46,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929250453] [2023-12-19 00:41:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:46,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:41:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:46,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:46,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:41:46,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929250453] [2023-12-19 00:41:46,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929250453] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:41:46,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27956683] [2023-12-19 00:41:46,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:46,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:41:46,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:41:46,677 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) [2023-12-19 00:41:46,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-19 00:41:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:46,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-19 00:41:46,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:41:47,572 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:47,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:41:48,081 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:48,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27956683] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:41:48,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:41:48,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2023-12-19 00:41:48,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111996423] [2023-12-19 00:41:48,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:41:48,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-19 00:41:48,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:41:48,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-19 00:41:48,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2023-12-19 00:41:48,082 INFO L87 Difference]: Start difference. First operand 69014 states and 86050 transitions. Second operand has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:51,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:41:51,781 INFO L93 Difference]: Finished difference Result 95801 states and 118680 transitions. [2023-12-19 00:41:51,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-19 00:41:51,782 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 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 88 [2023-12-19 00:41:51,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:41:51,856 INFO L225 Difference]: With dead ends: 95801 [2023-12-19 00:41:51,856 INFO L226 Difference]: Without dead ends: 67926 [2023-12-19 00:41:51,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2023-12-19 00:41:51,873 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 11416 mSDsluCounter, 16620 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11416 SdHoareTripleChecker+Valid, 18142 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:41:51,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11416 Valid, 18142 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-19 00:41:51,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67926 states. [2023-12-19 00:41:54,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67926 to 46390. [2023-12-19 00:41:54,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46390 states, 46388 states have (on average 1.2496766405104769) internal successors, (57970), 46389 states have internal predecessors, (57970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46390 states to 46390 states and 57970 transitions. [2023-12-19 00:41:54,308 INFO L78 Accepts]: Start accepts. Automaton has 46390 states and 57970 transitions. Word has length 88 [2023-12-19 00:41:54,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:41:54,308 INFO L495 AbstractCegarLoop]: Abstraction has 46390 states and 57970 transitions. [2023-12-19 00:41:54,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 7.129032258064516) internal successors, (221), 31 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:41:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 46390 states and 57970 transitions. [2023-12-19 00:41:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-19 00:41:54,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:41:54,314 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-19 00:41:54,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-19 00:41:54,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:41:54,518 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:41:54,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:41:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash -279339457, now seen corresponding path program 1 times [2023-12-19 00:41:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:41:54,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996937728] [2023-12-19 00:41:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:41:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:41:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:41:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:41:54,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:41:54,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996937728] [2023-12-19 00:41:54,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996937728] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 00:41:54,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 00:41:54,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 00:41:54,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692682130] [2023-12-19 00:41:54,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 00:41:54,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 00:41:54,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:41:54,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 00:41:54,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 00:41:54,635 INFO L87 Difference]: Start difference. First operand 46390 states and 57970 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:01,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:42:01,355 INFO L93 Difference]: Finished difference Result 50147 states and 64968 transitions. [2023-12-19 00:42:01,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 00:42:01,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2023-12-19 00:42:01,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:42:01,395 INFO L225 Difference]: With dead ends: 50147 [2023-12-19 00:42:01,395 INFO L226 Difference]: Without dead ends: 48643 [2023-12-19 00:42:01,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-19 00:42:01,402 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2352 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 1179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2352 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 5970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1179 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-19 00:42:01,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2352 Valid, 812 Invalid, 5970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1179 Valid, 4791 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-12-19 00:42:01,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48643 states. [2023-12-19 00:42:03,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48643 to 48643. [2023-12-19 00:42:03,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48643 states, 48641 states have (on average 1.2450196336424004) internal successors, (60559), 48642 states have internal predecessors, (60559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48643 states to 48643 states and 60559 transitions. [2023-12-19 00:42:03,727 INFO L78 Accepts]: Start accepts. Automaton has 48643 states and 60559 transitions. Word has length 133 [2023-12-19 00:42:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:42:03,727 INFO L495 AbstractCegarLoop]: Abstraction has 48643 states and 60559 transitions. [2023-12-19 00:42:03,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 48643 states and 60559 transitions. [2023-12-19 00:42:03,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 00:42:03,732 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:42:03,732 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:42:03,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-19 00:42:03,732 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:42:03,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:42:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1948015120, now seen corresponding path program 1 times [2023-12-19 00:42:03,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:42:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012719308] [2023-12-19 00:42:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:42:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:42:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:42:04,304 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:04,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:42:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012719308] [2023-12-19 00:42:04,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012719308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:42:04,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938962966] [2023-12-19 00:42:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:42:04,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:42:04,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:42:04,321 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) [2023-12-19 00:42:04,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-19 00:42:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:42:04,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:42:04,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:42:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 55 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:05,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:42:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 47 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:06,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938962966] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:42:06,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:42:06,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 33 [2023-12-19 00:42:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789399729] [2023-12-19 00:42:06,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:42:06,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-19 00:42:06,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:42:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-19 00:42:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-12-19 00:42:06,498 INFO L87 Difference]: Start difference. First operand 48643 states and 60559 transitions. Second operand has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:15,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:42:15,462 INFO L93 Difference]: Finished difference Result 98806 states and 122570 transitions. [2023-12-19 00:42:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-19 00:42:15,462 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 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 134 [2023-12-19 00:42:15,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:42:15,526 INFO L225 Difference]: With dead ends: 98806 [2023-12-19 00:42:15,527 INFO L226 Difference]: Without dead ends: 66065 [2023-12-19 00:42:15,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5264 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2787, Invalid=15845, Unknown=0, NotChecked=0, Total=18632 [2023-12-19 00:42:15,547 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 26629 mSDsluCounter, 17983 mSDsCounter, 0 mSdLazyCounter, 3445 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26629 SdHoareTripleChecker+Valid, 19537 SdHoareTripleChecker+Invalid, 3503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-19 00:42:15,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26629 Valid, 19537 Invalid, 3503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 3445 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-19 00:42:15,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66065 states. [2023-12-19 00:42:18,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66065 to 62395. [2023-12-19 00:42:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62395 states, 62393 states have (on average 1.2319490968538138) internal successors, (76865), 62394 states have internal predecessors, (76865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:19,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62395 states to 62395 states and 76865 transitions. [2023-12-19 00:42:19,095 INFO L78 Accepts]: Start accepts. Automaton has 62395 states and 76865 transitions. Word has length 134 [2023-12-19 00:42:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:42:19,095 INFO L495 AbstractCegarLoop]: Abstraction has 62395 states and 76865 transitions. [2023-12-19 00:42:19,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 10.676470588235293) internal successors, (363), 33 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 62395 states and 76865 transitions. [2023-12-19 00:42:19,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-19 00:42:19,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:42:19,103 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:42:19,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-19 00:42:19,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:42:19,308 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:42:19,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:42:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash 350047216, now seen corresponding path program 1 times [2023-12-19 00:42:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:42:19,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808656864] [2023-12-19 00:42:19,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:42:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:42:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:42:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:42:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808656864] [2023-12-19 00:42:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808656864] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:42:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31450196] [2023-12-19 00:42:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:42:20,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:42:20,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:42:20,563 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) [2023-12-19 00:42:20,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-19 00:42:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:42:20,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:42:20,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:42:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 19 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:21,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:42:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 13 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:23,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31450196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:42:23,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:42:23,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-19 00:42:23,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395523940] [2023-12-19 00:42:23,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:42:23,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-19 00:42:23,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:42:23,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-19 00:42:23,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-19 00:42:23,059 INFO L87 Difference]: Start difference. First operand 62395 states and 76865 transitions. Second operand has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:42:37,940 INFO L93 Difference]: Finished difference Result 133302 states and 164803 transitions. [2023-12-19 00:42:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-12-19 00:42:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 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 134 [2023-12-19 00:42:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:42:38,032 INFO L225 Difference]: With dead ends: 133302 [2023-12-19 00:42:38,033 INFO L226 Difference]: Without dead ends: 92612 [2023-12-19 00:42:38,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9349 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=4480, Invalid=24590, Unknown=0, NotChecked=0, Total=29070 [2023-12-19 00:42:38,057 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 31601 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31601 SdHoareTripleChecker+Valid, 19198 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-19 00:42:38,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31601 Valid, 19198 Invalid, 2770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-19 00:42:38,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92612 states. [2023-12-19 00:42:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92612 to 41333. [2023-12-19 00:42:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41333 states, 41331 states have (on average 1.2228835498778157) internal successors, (50543), 41332 states have internal predecessors, (50543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41333 states to 41333 states and 50543 transitions. [2023-12-19 00:42:41,078 INFO L78 Accepts]: Start accepts. Automaton has 41333 states and 50543 transitions. Word has length 134 [2023-12-19 00:42:41,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:42:41,079 INFO L495 AbstractCegarLoop]: Abstraction has 41333 states and 50543 transitions. [2023-12-19 00:42:41,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 10.805555555555555) internal successors, (389), 35 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:41,079 INFO L276 IsEmpty]: Start isEmpty. Operand 41333 states and 50543 transitions. [2023-12-19 00:42:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-19 00:42:41,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:42:41,083 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:42:41,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-19 00:42:41,288 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,SelfDestructingSolverStorable32 [2023-12-19 00:42:41,289 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:42:41,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:42:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2122195456, now seen corresponding path program 1 times [2023-12-19 00:42:41,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:42:41,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135208781] [2023-12-19 00:42:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:42:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:42:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:42:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:42,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:42:42,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135208781] [2023-12-19 00:42:42,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135208781] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:42:42,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249188501] [2023-12-19 00:42:42,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:42:42,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:42:42,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:42:42,305 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) [2023-12-19 00:42:42,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-19 00:42:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:42:42,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-19 00:42:42,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:42:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 33 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:43,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:42:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:42:44,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249188501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:42:44,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:42:44,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 39 [2023-12-19 00:42:44,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005766724] [2023-12-19 00:42:44,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:42:44,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-12-19 00:42:44,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:42:44,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-12-19 00:42:44,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2023-12-19 00:42:44,570 INFO L87 Difference]: Start difference. First operand 41333 states and 50543 transitions. Second operand has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 00:42:55,567 INFO L93 Difference]: Finished difference Result 73075 states and 88885 transitions. [2023-12-19 00:42:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-12-19 00:42:55,567 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 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 136 [2023-12-19 00:42:55,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 00:42:55,620 INFO L225 Difference]: With dead ends: 73075 [2023-12-19 00:42:55,620 INFO L226 Difference]: Without dead ends: 54492 [2023-12-19 00:42:55,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7155 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=3175, Invalid=20387, Unknown=0, NotChecked=0, Total=23562 [2023-12-19 00:42:55,629 INFO L413 NwaCegarLoop]: 1556 mSDtfsCounter, 19900 mSDsluCounter, 24997 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19900 SdHoareTripleChecker+Valid, 26553 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-19 00:42:55,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19900 Valid, 26553 Invalid, 3112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [209 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-19 00:42:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54492 states. [2023-12-19 00:42:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54492 to 49336. [2023-12-19 00:42:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49336 states, 49334 states have (on average 1.212328211780922) internal successors, (59809), 49335 states have internal predecessors, (59809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49336 states to 49336 states and 59809 transitions. [2023-12-19 00:42:59,396 INFO L78 Accepts]: Start accepts. Automaton has 49336 states and 59809 transitions. Word has length 136 [2023-12-19 00:42:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 00:42:59,397 INFO L495 AbstractCegarLoop]: Abstraction has 49336 states and 59809 transitions. [2023-12-19 00:42:59,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 9.575) internal successors, (383), 39 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:42:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 49336 states and 59809 transitions. [2023-12-19 00:42:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-19 00:42:59,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 00:42:59,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 00:42:59,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-19 00:42:59,606 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,SelfDestructingSolverStorable33 [2023-12-19 00:42:59,607 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 00:42:59,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 00:42:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash 650839388, now seen corresponding path program 1 times [2023-12-19 00:42:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 00:42:59,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306866771] [2023-12-19 00:42:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:42:59,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 00:42:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:43:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:43:01,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 00:43:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306866771] [2023-12-19 00:43:01,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306866771] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 00:43:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011423198] [2023-12-19 00:43:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 00:43:01,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 00:43:01,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 00:43:01,442 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) [2023-12-19 00:43:01,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-19 00:43:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 00:43:01,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 82 conjunts are in the unsatisfiable core [2023-12-19 00:43:01,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 00:43:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:43:12,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-19 00:43:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 22 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 00:43:26,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011423198] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-19 00:43:26,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-19 00:43:26,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 39, 37] total 103 [2023-12-19 00:43:26,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126814524] [2023-12-19 00:43:26,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-19 00:43:26,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-12-19 00:43:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 00:43:26,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-12-19 00:43:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=884, Invalid=9622, Unknown=0, NotChecked=0, Total=10506 [2023-12-19 00:43:26,230 INFO L87 Difference]: Start difference. First operand 49336 states and 59809 transitions. Second operand has 103 states, 103 states have (on average 3.8155339805825244) internal successors, (393), 103 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 00:43:44,529 WARN L293 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 374 DAG size of output: 218 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-19 00:43:52,617 WARN L293 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 390 DAG size of output: 221 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-19 00:54:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 467 states. [2023-12-19 00:54:08,902 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:54:08,909 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-19 00:54:08,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 564 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121123 ImplicationChecksByTransitivity, 627.3s TimeCoverageRelationStatistics Valid=34551, Invalid=285239, Unknown=0, NotChecked=0, Total=319790 [2023-12-19 00:54:08,913 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 10775 mSDsluCounter, 9924 mSDsCounter, 0 mSdLazyCounter, 15172 mSolverCounterSat, 579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10775 SdHoareTripleChecker+Valid, 10232 SdHoareTripleChecker+Invalid, 15751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 15172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2023-12-19 00:54:08,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10775 Valid, 10232 Invalid, 15751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [579 Valid, 15172 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2023-12-19 00:54:08,915 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-19 00:54:08,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-19 00:54:09,121 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,SelfDestructingSolverStorable34 [2023-12-19 00:54:09,121 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (49336states) and FLOYD_HOARE automaton (currently 467 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-20-8-4-3-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∧-3-3-1 context. [2023-12-19 00:54:09,124 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-19 00:54:09,127 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, 1] [2023-12-19 00:54:09,129 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-19 00:54:09,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 12:54:09 BoogieIcfgContainer [2023-12-19 00:54:09,136 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-19 00:54:09,137 INFO L158 Benchmark]: Toolchain (without parser) took 847374.56ms. Allocated memory was 256.9MB in the beginning and 3.8GB in the end (delta: 3.6GB). Free memory was 189.5MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-19 00:54:09,137 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 204.5MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-19 00:54:09,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1252.96ms. Allocated memory is still 256.9MB. Free memory was 189.5MB in the beginning and 166.5MB in the end (delta: 23.0MB). Peak memory consumption was 89.5MB. Max. memory is 8.0GB. [2023-12-19 00:54:09,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 300.16ms. Allocated memory is still 256.9MB. Free memory was 166.5MB in the beginning and 150.3MB in the end (delta: 16.2MB). Peak memory consumption was 90.2MB. Max. memory is 8.0GB. [2023-12-19 00:54:09,137 INFO L158 Benchmark]: Boogie Preprocessor took 416.91ms. Allocated memory was 256.9MB in the beginning and 453.0MB in the end (delta: 196.1MB). Free memory was 150.3MB in the beginning and 276.6MB in the end (delta: -126.4MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. [2023-12-19 00:54:09,137 INFO L158 Benchmark]: RCFGBuilder took 3305.11ms. Allocated memory was 453.0MB in the beginning and 758.1MB in the end (delta: 305.1MB). Free memory was 276.6MB in the beginning and 328.5MB in the end (delta: -51.9MB). Peak memory consumption was 254.3MB. Max. memory is 8.0GB. [2023-12-19 00:54:09,138 INFO L158 Benchmark]: TraceAbstraction took 842091.89ms. Allocated memory was 758.1MB in the beginning and 3.8GB in the end (delta: 3.1GB). Free memory was 328.0MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 871.8MB. Max. memory is 8.0GB. [2023-12-19 00:54:09,138 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 204.5MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1252.96ms. Allocated memory is still 256.9MB. Free memory was 189.5MB in the beginning and 166.5MB in the end (delta: 23.0MB). Peak memory consumption was 89.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 300.16ms. Allocated memory is still 256.9MB. Free memory was 166.5MB in the beginning and 150.3MB in the end (delta: 16.2MB). Peak memory consumption was 90.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 416.91ms. Allocated memory was 256.9MB in the beginning and 453.0MB in the end (delta: 196.1MB). Free memory was 150.3MB in the beginning and 276.6MB in the end (delta: -126.4MB). Peak memory consumption was 75.5MB. Max. memory is 8.0GB. * RCFGBuilder took 3305.11ms. Allocated memory was 453.0MB in the beginning and 758.1MB in the end (delta: 305.1MB). Free memory was 276.6MB in the beginning and 328.5MB in the end (delta: -51.9MB). Peak memory consumption was 254.3MB. Max. memory is 8.0GB. * TraceAbstraction took 842091.89ms. Allocated memory was 758.1MB in the beginning and 3.8GB in the end (delta: 3.1GB). Free memory was 328.0MB in the beginning and 2.5GB in the end (delta: -2.2GB). Peak memory consumption was 871.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 436]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 436). Cancelled while NwaCegarLoop was constructing difference of abstraction (49336states) and FLOYD_HOARE automaton (currently 467 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-20-8-4-3-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∧-3-3-1 context. - TimeoutResultAtElement [Line: 634]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 634). Cancelled while NwaCegarLoop was constructing difference of abstraction (49336states) and FLOYD_HOARE automaton (currently 467 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-20-8-4-3-2-2-2-2-1 term,while SimplifyDDA2 was simplifying 3 xjuncts wrt. a ∧-3-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 834 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 842.0s, OverallIterations: 35, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 751.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 263862 SdHoareTripleChecker+Valid, 41.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 263862 mSDsluCounter, 253202 SdHoareTripleChecker+Invalid, 36.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 202059 mSDsCounter, 3759 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43146 IncrementalHoareTripleChecker+Invalid, 46905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3759 mSolverCounterUnsat, 51143 mSDtfsCounter, 43146 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3999 GetRequests, 2218 SyntacticMatches, 1 SemanticMatches, 1779 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175861 ImplicationChecksByTransitivity, 687.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88693occurred in iteration=27, InterpolantAutomatonStates: 937, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 32.1s AutomataMinimizationTime, 34 MinimizatonAttempts, 309203 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 53.3s InterpolantComputationTime, 3909 NumberOfCodeBlocks, 3909 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 5070 ConstructedInterpolants, 0 QuantifiedInterpolants, 90904 SizeOfPredicates, 88 NumberOfNonLiveVariables, 5738 ConjunctsInSsa, 292 ConjunctsInUnsatCore, 59 InterpolantComputations, 23 PerfectInterpolantSequences, 746/1872 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