/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/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:46:31,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:46:31,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:46:31,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:46:31,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:46:31,127 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:46:31,128 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:46:31,128 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:46:31,128 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:46:31,128 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:46:31,129 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:46:31,129 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:46:31,129 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:46:31,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:46:31,130 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:46:31,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:46:31,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:46:31,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:46:31,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:46:31,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:46:31,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:46:31,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:46:31,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:46:31,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:46:31,137 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:46:31,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:46:31,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:46:31,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:46:31,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:46:31,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:46:31,138 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:46:31,139 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:46:31,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:46:31,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:46:31,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:46:31,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:46:31,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:46:31,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:46:31,140 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:46:31,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:46:31,141 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:46:31,146 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:46:31,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:46:31,146 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:46:31,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:46:31,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:46:31,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:46:31,352 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:46:31,352 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:46:31,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:46:32,411 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:46:32,599 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:46:32,600 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:46:32,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b418cfc/f9bc39b165df4aba85e59dc8ecd55bbc/FLAG93720e889 [2023-12-20 03:46:32,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88b418cfc/f9bc39b165df4aba85e59dc8ecd55bbc [2023-12-20 03:46:32,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:46:32,625 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:46:32,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:46:32,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:46:32,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:46:32,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:32,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5191ced8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32, skipping insertion in model container [2023-12-20 03:46:32,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:32,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:46:32,799 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2023-12-20 03:46:32,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:46:32,849 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:46:32,883 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7920,7933] [2023-12-20 03:46:32,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:46:32,908 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:46:32,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32 WrapperNode [2023-12-20 03:46:32,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:46:32,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:46:32,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:46:32,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:46:32,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:32,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:32,973 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 676 [2023-12-20 03:46:32,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:46:32,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:46:32,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:46:32,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:46:32,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:32,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:32,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:33,009 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 03:46:33,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:33,009 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:33,029 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:33,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:33,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:33,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:33,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:46:33,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:46:33,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:46:33,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:46:33,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (1/1) ... [2023-12-20 03:46:33,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:46:33,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:46:33,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 03:46:33,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 03:46:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:46:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:46:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:46:33,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:46:33,219 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:46:33,220 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:46:33,628 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:46:33,686 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:46:33,686 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:46:33,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:46:33 BoogieIcfgContainer [2023-12-20 03:46:33,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:46:33,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:46:33,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:46:33,691 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:46:33,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:46:32" (1/3) ... [2023-12-20 03:46:33,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a9e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:46:33, skipping insertion in model container [2023-12-20 03:46:33,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:46:32" (2/3) ... [2023-12-20 03:46:33,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a9e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:46:33, skipping insertion in model container [2023-12-20 03:46:33,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:46:33" (3/3) ... [2023-12-20 03:46:33,694 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-20 03:46:33,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:46:33,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 03:46:33,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:46:33,757 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;@45d80fac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:46:33,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 03:46:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7549668874172186) internal successors, (265), 152 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 03:46:33,768 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:33,768 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, 1] [2023-12-20 03:46:33,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:33,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1295134238, now seen corresponding path program 1 times [2023-12-20 03:46:33,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:33,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796958257] [2023-12-20 03:46:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:33,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796958257] [2023-12-20 03:46:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796958257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:34,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:34,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:34,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198664630] [2023-12-20 03:46:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:34,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:34,151 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7549668874172186) internal successors, (265), 152 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:34,247 INFO L93 Difference]: Finished difference Result 325 states and 547 transitions. [2023-12-20 03:46:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-20 03:46:34,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:34,261 INFO L225 Difference]: With dead ends: 325 [2023-12-20 03:46:34,261 INFO L226 Difference]: Without dead ends: 224 [2023-12-20 03:46:34,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:34,267 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 156 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:34,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 432 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:46:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-12-20 03:46:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2023-12-20 03:46:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5636363636363637) internal successors, (344), 220 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 344 transitions. [2023-12-20 03:46:34,320 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 344 transitions. Word has length 61 [2023-12-20 03:46:34,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:34,321 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 344 transitions. [2023-12-20 03:46:34,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 344 transitions. [2023-12-20 03:46:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-20 03:46:34,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:34,323 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, 1, 1, 1] [2023-12-20 03:46:34,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:46:34,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:34,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1328363549, now seen corresponding path program 1 times [2023-12-20 03:46:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:34,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955878467] [2023-12-20 03:46:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:34,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:34,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955878467] [2023-12-20 03:46:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955878467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:34,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:34,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:34,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284571369] [2023-12-20 03:46:34,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:34,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:34,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:34,460 INFO L87 Difference]: Start difference. First operand 221 states and 344 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:34,482 INFO L93 Difference]: Finished difference Result 535 states and 856 transitions. [2023-12-20 03:46:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:34,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-20 03:46:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:34,484 INFO L225 Difference]: With dead ends: 535 [2023-12-20 03:46:34,484 INFO L226 Difference]: Without dead ends: 370 [2023-12-20 03:46:34,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:34,485 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 133 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:34,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 428 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-20 03:46:34,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 366. [2023-12-20 03:46:34,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 1.5863013698630137) internal successors, (579), 365 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 579 transitions. [2023-12-20 03:46:34,496 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 579 transitions. Word has length 63 [2023-12-20 03:46:34,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:34,496 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 579 transitions. [2023-12-20 03:46:34,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,496 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 579 transitions. [2023-12-20 03:46:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-20 03:46:34,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:34,498 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, 1, 1, 1, 1, 1] [2023-12-20 03:46:34,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:46:34,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:34,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:34,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1002977756, now seen corresponding path program 1 times [2023-12-20 03:46:34,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:34,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898632743] [2023-12-20 03:46:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:34,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:34,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:34,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898632743] [2023-12-20 03:46:34,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898632743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:34,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:34,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081402994] [2023-12-20 03:46:34,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:34,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:34,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:34,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:34,621 INFO L87 Difference]: Start difference. First operand 366 states and 579 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:34,645 INFO L93 Difference]: Finished difference Result 954 states and 1533 transitions. [2023-12-20 03:46:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:34,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-12-20 03:46:34,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:34,650 INFO L225 Difference]: With dead ends: 954 [2023-12-20 03:46:34,650 INFO L226 Difference]: Without dead ends: 644 [2023-12-20 03:46:34,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:34,657 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 127 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:34,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 429 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:34,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2023-12-20 03:46:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 638. [2023-12-20 03:46:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 1.5934065934065933) internal successors, (1015), 637 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 1015 transitions. [2023-12-20 03:46:34,680 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 1015 transitions. Word has length 65 [2023-12-20 03:46:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:34,680 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 1015 transitions. [2023-12-20 03:46:34,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,680 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 1015 transitions. [2023-12-20 03:46:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-20 03:46:34,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:34,682 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:34,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:46:34,683 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:34,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1689401755, now seen corresponding path program 1 times [2023-12-20 03:46:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:34,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100519522] [2023-12-20 03:46:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:34,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:34,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:34,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100519522] [2023-12-20 03:46:34,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100519522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:34,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:34,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:46:34,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559434812] [2023-12-20 03:46:34,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:46:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:46:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:34,813 INFO L87 Difference]: Start difference. First operand 638 states and 1015 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:34,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:34,975 INFO L93 Difference]: Finished difference Result 3282 states and 5313 transitions. [2023-12-20 03:46:34,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:46:34,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-20 03:46:34,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:34,986 INFO L225 Difference]: With dead ends: 3282 [2023-12-20 03:46:34,986 INFO L226 Difference]: Without dead ends: 2700 [2023-12-20 03:46:34,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:46:34,993 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 1026 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:34,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 1594 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:46:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-12-20 03:46:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1202. [2023-12-20 03:46:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1201 states have (on average 1.601165695253955) internal successors, (1923), 1201 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1923 transitions. [2023-12-20 03:46:35,033 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1923 transitions. Word has length 67 [2023-12-20 03:46:35,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:35,033 INFO L495 AbstractCegarLoop]: Abstraction has 1202 states and 1923 transitions. [2023-12-20 03:46:35,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1923 transitions. [2023-12-20 03:46:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-20 03:46:35,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:35,035 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:35,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:46:35,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:35,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash -894351026, now seen corresponding path program 1 times [2023-12-20 03:46:35,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:35,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078996488] [2023-12-20 03:46:35,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:35,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:35,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078996488] [2023-12-20 03:46:35,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078996488] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:35,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:35,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:46:35,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269384578] [2023-12-20 03:46:35,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:35,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:46:35,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:46:35,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:46:35,144 INFO L87 Difference]: Start difference. First operand 1202 states and 1923 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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) [2023-12-20 03:46:35,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:35,217 INFO L93 Difference]: Finished difference Result 4394 states and 7078 transitions. [2023-12-20 03:46:35,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:46:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 68 [2023-12-20 03:46:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:35,227 INFO L225 Difference]: With dead ends: 4394 [2023-12-20 03:46:35,227 INFO L226 Difference]: Without dead ends: 3248 [2023-12-20 03:46:35,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:35,230 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 456 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:35,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 785 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2023-12-20 03:46:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 2216. [2023-12-20 03:46:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2215 states have (on average 1.601354401805869) internal successors, (3547), 2215 states have internal predecessors, (3547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3547 transitions. [2023-12-20 03:46:35,267 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3547 transitions. Word has length 68 [2023-12-20 03:46:35,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:35,268 INFO L495 AbstractCegarLoop]: Abstraction has 2216 states and 3547 transitions. [2023-12-20 03:46:35,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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) [2023-12-20 03:46:35,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3547 transitions. [2023-12-20 03:46:35,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 03:46:35,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:35,270 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:35,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:46:35,270 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:35,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2013024180, now seen corresponding path program 1 times [2023-12-20 03:46:35,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:35,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487752355] [2023-12-20 03:46:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:35,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:35,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:35,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487752355] [2023-12-20 03:46:35,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487752355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:35,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:35,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:46:35,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576976875] [2023-12-20 03:46:35,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:35,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:46:35,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:35,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:46:35,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:46:35,336 INFO L87 Difference]: Start difference. First operand 2216 states and 3547 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:35,395 INFO L93 Difference]: Finished difference Result 6524 states and 10506 transitions. [2023-12-20 03:46:35,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:46:35,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-20 03:46:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:35,407 INFO L225 Difference]: With dead ends: 6524 [2023-12-20 03:46:35,407 INFO L226 Difference]: Without dead ends: 4364 [2023-12-20 03:46:35,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:35,412 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 456 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:35,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 727 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4364 states. [2023-12-20 03:46:35,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4364 to 3274. [2023-12-20 03:46:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3273 states have (on average 1.5988389856400855) internal successors, (5233), 3273 states have internal predecessors, (5233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 5233 transitions. [2023-12-20 03:46:35,478 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 5233 transitions. Word has length 69 [2023-12-20 03:46:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:35,479 INFO L495 AbstractCegarLoop]: Abstraction has 3274 states and 5233 transitions. [2023-12-20 03:46:35,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 5233 transitions. [2023-12-20 03:46:35,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-20 03:46:35,480 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:35,480 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:35,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:46:35,481 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:35,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1967371733, now seen corresponding path program 1 times [2023-12-20 03:46:35,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:35,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637865598] [2023-12-20 03:46:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:35,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:35,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:35,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637865598] [2023-12-20 03:46:35,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637865598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:35,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:35,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:46:35,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35408547] [2023-12-20 03:46:35,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:35,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:46:35,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:35,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:46:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:46:35,538 INFO L87 Difference]: Start difference. First operand 3274 states and 5233 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2023-12-20 03:46:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:35,603 INFO L93 Difference]: Finished difference Result 9596 states and 15414 transitions. [2023-12-20 03:46:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:46:35,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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 70 [2023-12-20 03:46:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:35,621 INFO L225 Difference]: With dead ends: 9596 [2023-12-20 03:46:35,621 INFO L226 Difference]: Without dead ends: 6378 [2023-12-20 03:46:35,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:35,627 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 454 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:35,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 770 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6378 states. [2023-12-20 03:46:35,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6378 to 4804. [2023-12-20 03:46:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 4803 states have (on average 1.5954611701020196) internal successors, (7663), 4803 states have internal predecessors, (7663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 7663 transitions. [2023-12-20 03:46:35,713 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 7663 transitions. Word has length 70 [2023-12-20 03:46:35,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:35,714 INFO L495 AbstractCegarLoop]: Abstraction has 4804 states and 7663 transitions. [2023-12-20 03:46:35,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 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) [2023-12-20 03:46:35,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 7663 transitions. [2023-12-20 03:46:35,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 03:46:35,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:35,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:35,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:46:35,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:35,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1556726038, now seen corresponding path program 1 times [2023-12-20 03:46:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790869358] [2023-12-20 03:46:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:35,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:35,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790869358] [2023-12-20 03:46:35,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790869358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:35,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:35,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989348667] [2023-12-20 03:46:35,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:35,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:35,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:35,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:35,794 INFO L87 Difference]: Start difference. First operand 4804 states and 7663 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:35,831 INFO L93 Difference]: Finished difference Result 11564 states and 18530 transitions. [2023-12-20 03:46:35,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:35,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-20 03:46:35,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:35,865 INFO L225 Difference]: With dead ends: 11564 [2023-12-20 03:46:35,865 INFO L226 Difference]: Without dead ends: 6816 [2023-12-20 03:46:35,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:35,877 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 138 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:35,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6816 states. [2023-12-20 03:46:35,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6816 to 6814. [2023-12-20 03:46:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6814 states, 6813 states have (on average 1.6009100249522972) internal successors, (10907), 6813 states have internal predecessors, (10907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 10907 transitions. [2023-12-20 03:46:35,984 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 10907 transitions. Word has length 71 [2023-12-20 03:46:35,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:35,984 INFO L495 AbstractCegarLoop]: Abstraction has 6814 states and 10907 transitions. [2023-12-20 03:46:35,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:35,985 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 10907 transitions. [2023-12-20 03:46:35,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 03:46:35,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:35,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:35,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:46:35,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:35,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:35,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1775090930, now seen corresponding path program 1 times [2023-12-20 03:46:35,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:35,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063371071] [2023-12-20 03:46:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:36,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:36,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063371071] [2023-12-20 03:46:36,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063371071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:36,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:36,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:36,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242377117] [2023-12-20 03:46:36,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:36,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:36,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:36,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:36,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:36,033 INFO L87 Difference]: Start difference. First operand 6814 states and 10907 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:36,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:36,085 INFO L93 Difference]: Finished difference Result 14946 states and 23968 transitions. [2023-12-20 03:46:36,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:36,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-20 03:46:36,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:36,102 INFO L225 Difference]: With dead ends: 14946 [2023-12-20 03:46:36,103 INFO L226 Difference]: Without dead ends: 10126 [2023-12-20 03:46:36,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:36,115 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 126 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:36,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 479 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:36,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10126 states. [2023-12-20 03:46:36,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10126 to 10124. [2023-12-20 03:46:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 1.591721821594389) internal successors, (16113), 10123 states have internal predecessors, (16113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 16113 transitions. [2023-12-20 03:46:36,273 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 16113 transitions. Word has length 71 [2023-12-20 03:46:36,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:36,273 INFO L495 AbstractCegarLoop]: Abstraction has 10124 states and 16113 transitions. [2023-12-20 03:46:36,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:36,273 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 16113 transitions. [2023-12-20 03:46:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-20 03:46:36,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:36,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:46:36,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:36,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash -531342652, now seen corresponding path program 1 times [2023-12-20 03:46:36,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:36,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636008285] [2023-12-20 03:46:36,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:36,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:36,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636008285] [2023-12-20 03:46:36,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636008285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:36,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:36,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:36,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185326527] [2023-12-20 03:46:36,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:36,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:36,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:36,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:36,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:36,313 INFO L87 Difference]: Start difference. First operand 10124 states and 16113 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:36,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:36,368 INFO L93 Difference]: Finished difference Result 21831 states and 34807 transitions. [2023-12-20 03:46:36,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:36,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-20 03:46:36,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:36,392 INFO L225 Difference]: With dead ends: 21831 [2023-12-20 03:46:36,392 INFO L226 Difference]: Without dead ends: 14653 [2023-12-20 03:46:36,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:36,402 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 132 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:36,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 519 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:36,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14653 states. [2023-12-20 03:46:36,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 14651. [2023-12-20 03:46:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14651 states, 14650 states have (on average 1.5804778156996586) internal successors, (23154), 14650 states have internal predecessors, (23154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:36,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14651 states to 14651 states and 23154 transitions. [2023-12-20 03:46:36,675 INFO L78 Accepts]: Start accepts. Automaton has 14651 states and 23154 transitions. Word has length 71 [2023-12-20 03:46:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:36,675 INFO L495 AbstractCegarLoop]: Abstraction has 14651 states and 23154 transitions. [2023-12-20 03:46:36,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 14651 states and 23154 transitions. [2023-12-20 03:46:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-20 03:46:36,675 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:36,675 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:46:36,676 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:36,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -658685626, now seen corresponding path program 1 times [2023-12-20 03:46:36,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:36,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141892276] [2023-12-20 03:46:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:36,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:36,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:36,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141892276] [2023-12-20 03:46:36,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141892276] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:36,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:36,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:46:36,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973305226] [2023-12-20 03:46:36,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:36,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:46:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:36,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:46:36,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:36,863 INFO L87 Difference]: Start difference. First operand 14651 states and 23154 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2023-12-20 03:46:37,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:37,026 INFO L93 Difference]: Finished difference Result 29214 states and 46185 transitions. [2023-12-20 03:46:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:46:37,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 72 [2023-12-20 03:46:37,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:37,050 INFO L225 Difference]: With dead ends: 29214 [2023-12-20 03:46:37,050 INFO L226 Difference]: Without dead ends: 14653 [2023-12-20 03:46:37,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:46:37,059 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 385 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:37,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 633 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14653 states. [2023-12-20 03:46:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14653 to 14651. [2023-12-20 03:46:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14651 states, 14650 states have (on average 1.5702389078498293) internal successors, (23004), 14650 states have internal predecessors, (23004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14651 states to 14651 states and 23004 transitions. [2023-12-20 03:46:37,275 INFO L78 Accepts]: Start accepts. Automaton has 14651 states and 23004 transitions. Word has length 72 [2023-12-20 03:46:37,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:37,276 INFO L495 AbstractCegarLoop]: Abstraction has 14651 states and 23004 transitions. [2023-12-20 03:46:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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) [2023-12-20 03:46:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 14651 states and 23004 transitions. [2023-12-20 03:46:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-20 03:46:37,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:37,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:37,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:46:37,277 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:37,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1246442082, now seen corresponding path program 1 times [2023-12-20 03:46:37,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:37,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841931914] [2023-12-20 03:46:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:37,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841931914] [2023-12-20 03:46:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841931914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:37,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:37,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:46:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293883912] [2023-12-20 03:46:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:37,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:46:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:46:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:37,433 INFO L87 Difference]: Start difference. First operand 14651 states and 23004 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2023-12-20 03:46:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:37,674 INFO L93 Difference]: Finished difference Result 42265 states and 66509 transitions. [2023-12-20 03:46:37,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:46:37,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 [2023-12-20 03:46:37,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:37,723 INFO L225 Difference]: With dead ends: 42265 [2023-12-20 03:46:37,723 INFO L226 Difference]: Without dead ends: 27704 [2023-12-20 03:46:37,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:46:37,735 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 127 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:37,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 847 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27704 states. [2023-12-20 03:46:37,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27704 to 27702. [2023-12-20 03:46:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27702 states, 27701 states have (on average 1.5600158839031082) internal successors, (43214), 27701 states have internal predecessors, (43214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27702 states to 27702 states and 43214 transitions. [2023-12-20 03:46:38,075 INFO L78 Accepts]: Start accepts. Automaton has 27702 states and 43214 transitions. Word has length 75 [2023-12-20 03:46:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:38,075 INFO L495 AbstractCegarLoop]: Abstraction has 27702 states and 43214 transitions. [2023-12-20 03:46:38,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2023-12-20 03:46:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 27702 states and 43214 transitions. [2023-12-20 03:46:38,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:46:38,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:38,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:38,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:46:38,076 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:38,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash 13091843, now seen corresponding path program 1 times [2023-12-20 03:46:38,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:38,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658571435] [2023-12-20 03:46:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:38,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:38,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658571435] [2023-12-20 03:46:38,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658571435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:38,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:38,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:46:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764912834] [2023-12-20 03:46:38,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:38,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:46:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:46:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:38,332 INFO L87 Difference]: Start difference. First operand 27702 states and 43214 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2023-12-20 03:46:38,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:38,514 INFO L93 Difference]: Finished difference Result 55428 states and 86154 transitions. [2023-12-20 03:46:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 03:46:38,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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 [2023-12-20 03:46:38,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:38,712 INFO L225 Difference]: With dead ends: 55428 [2023-12-20 03:46:38,713 INFO L226 Difference]: Without dead ends: 55426 [2023-12-20 03:46:38,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:46:38,735 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 286 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:38,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1089 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55426 states. [2023-12-20 03:46:39,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55426 to 28476. [2023-12-20 03:46:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28476 states, 28475 states have (on average 1.5444776119402985) internal successors, (43979), 28475 states have internal predecessors, (43979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28476 states to 28476 states and 43979 transitions. [2023-12-20 03:46:39,238 INFO L78 Accepts]: Start accepts. Automaton has 28476 states and 43979 transitions. Word has length 76 [2023-12-20 03:46:39,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:39,238 INFO L495 AbstractCegarLoop]: Abstraction has 28476 states and 43979 transitions. [2023-12-20 03:46:39,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2023-12-20 03:46:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 28476 states and 43979 transitions. [2023-12-20 03:46:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 03:46:39,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:39,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:39,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:46:39,240 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:39,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:39,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1957723140, now seen corresponding path program 1 times [2023-12-20 03:46:39,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:39,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277699805] [2023-12-20 03:46:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:46:39,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:39,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277699805] [2023-12-20 03:46:39,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277699805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:39,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:39,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:46:39,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600145038] [2023-12-20 03:46:39,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:39,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:46:39,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:39,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:46:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:39,417 INFO L87 Difference]: Start difference. First operand 28476 states and 43979 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:39,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:39,732 INFO L93 Difference]: Finished difference Result 74230 states and 114827 transitions. [2023-12-20 03:46:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:46:39,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 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 102 [2023-12-20 03:46:39,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:39,831 INFO L225 Difference]: With dead ends: 74230 [2023-12-20 03:46:39,832 INFO L226 Difference]: Without dead ends: 57763 [2023-12-20 03:46:39,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:46:39,856 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 575 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:39,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1047 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:39,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57763 states. [2023-12-20 03:46:40,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57763 to 44236. [2023-12-20 03:46:40,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44236 states, 44235 states have (on average 1.54251158584831) internal successors, (68233), 44235 states have internal predecessors, (68233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44236 states to 44236 states and 68233 transitions. [2023-12-20 03:46:40,666 INFO L78 Accepts]: Start accepts. Automaton has 44236 states and 68233 transitions. Word has length 102 [2023-12-20 03:46:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:40,666 INFO L495 AbstractCegarLoop]: Abstraction has 44236 states and 68233 transitions. [2023-12-20 03:46:40,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 44236 states and 68233 transitions. [2023-12-20 03:46:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 03:46:40,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:40,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:40,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:46:40,668 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:40,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:40,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2118879264, now seen corresponding path program 1 times [2023-12-20 03:46:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:40,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708856296] [2023-12-20 03:46:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:40,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 03:46:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:40,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708856296] [2023-12-20 03:46:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708856296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:40,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:40,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:46:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274257521] [2023-12-20 03:46:40,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:40,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:46:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:46:40,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:40,747 INFO L87 Difference]: Start difference. First operand 44236 states and 68233 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:41,175 INFO L93 Difference]: Finished difference Result 81281 states and 125843 transitions. [2023-12-20 03:46:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:46:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 102 [2023-12-20 03:46:41,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:41,283 INFO L225 Difference]: With dead ends: 81281 [2023-12-20 03:46:41,284 INFO L226 Difference]: Without dead ends: 68243 [2023-12-20 03:46:41,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:46:41,300 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 586 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:41,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1044 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:41,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68243 states. [2023-12-20 03:46:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68243 to 61699. [2023-12-20 03:46:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61699 states, 61698 states have (on average 1.5418165904891568) internal successors, (95127), 61698 states have internal predecessors, (95127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61699 states to 61699 states and 95127 transitions. [2023-12-20 03:46:42,103 INFO L78 Accepts]: Start accepts. Automaton has 61699 states and 95127 transitions. Word has length 102 [2023-12-20 03:46:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:42,105 INFO L495 AbstractCegarLoop]: Abstraction has 61699 states and 95127 transitions. [2023-12-20 03:46:42,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:42,105 INFO L276 IsEmpty]: Start isEmpty. Operand 61699 states and 95127 transitions. [2023-12-20 03:46:42,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 03:46:42,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:42,108 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:42,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:46:42,108 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:42,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:42,108 INFO L85 PathProgramCache]: Analyzing trace with hash -130345550, now seen corresponding path program 1 times [2023-12-20 03:46:42,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:42,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903835294] [2023-12-20 03:46:42,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:42,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:46:42,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:42,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903835294] [2023-12-20 03:46:42,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903835294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:42,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:42,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:46:42,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580395980] [2023-12-20 03:46:42,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:42,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:46:42,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:42,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:46:42,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:46:42,200 INFO L87 Difference]: Start difference. First operand 61699 states and 95127 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:42,584 INFO L93 Difference]: Finished difference Result 86457 states and 133883 transitions. [2023-12-20 03:46:42,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:46:42,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 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 102 [2023-12-20 03:46:42,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:42,689 INFO L225 Difference]: With dead ends: 86457 [2023-12-20 03:46:42,689 INFO L226 Difference]: Without dead ends: 73419 [2023-12-20 03:46:42,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:46:42,717 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 583 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:42,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1079 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:42,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73419 states. [2023-12-20 03:46:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73419 to 70817. [2023-12-20 03:46:43,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70817 states, 70816 states have (on average 1.5435918436511522) internal successors, (109311), 70816 states have internal predecessors, (109311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70817 states to 70817 states and 109311 transitions. [2023-12-20 03:46:43,633 INFO L78 Accepts]: Start accepts. Automaton has 70817 states and 109311 transitions. Word has length 102 [2023-12-20 03:46:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:43,633 INFO L495 AbstractCegarLoop]: Abstraction has 70817 states and 109311 transitions. [2023-12-20 03:46:43,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 70817 states and 109311 transitions. [2023-12-20 03:46:43,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 03:46:43,638 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:43,638 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:43,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:46:43,638 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:43,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash 497371023, now seen corresponding path program 1 times [2023-12-20 03:46:43,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:43,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112502422] [2023-12-20 03:46:43,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:43,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:46:43,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:43,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112502422] [2023-12-20 03:46:43,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112502422] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:43,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:43,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:46:43,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502798427] [2023-12-20 03:46:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:46:43,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:43,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:46:43,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:46:43,715 INFO L87 Difference]: Start difference. First operand 70817 states and 109311 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:44,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:44,281 INFO L93 Difference]: Finished difference Result 121853 states and 188636 transitions. [2023-12-20 03:46:44,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:46:44,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 103 [2023-12-20 03:46:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:44,434 INFO L225 Difference]: With dead ends: 121853 [2023-12-20 03:46:44,434 INFO L226 Difference]: Without dead ends: 94906 [2023-12-20 03:46:44,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:46:44,480 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 257 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:44,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 804 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94906 states. [2023-12-20 03:46:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94906 to 92306. [2023-12-20 03:46:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92306 states, 92305 states have (on average 1.5415741292454364) internal successors, (142295), 92305 states have internal predecessors, (142295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:45,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92306 states to 92306 states and 142295 transitions. [2023-12-20 03:46:45,861 INFO L78 Accepts]: Start accepts. Automaton has 92306 states and 142295 transitions. Word has length 103 [2023-12-20 03:46:45,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:45,861 INFO L495 AbstractCegarLoop]: Abstraction has 92306 states and 142295 transitions. [2023-12-20 03:46:45,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 92306 states and 142295 transitions. [2023-12-20 03:46:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 03:46:45,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:45,863 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:45,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:46:45,863 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:45,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1279888785, now seen corresponding path program 1 times [2023-12-20 03:46:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188659643] [2023-12-20 03:46:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-20 03:46:45,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:45,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188659643] [2023-12-20 03:46:45,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188659643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:45,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:45,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:45,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024985855] [2023-12-20 03:46:45,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:45,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:45,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:45,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:45,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:45,911 INFO L87 Difference]: Start difference. First operand 92306 states and 142295 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:46,633 INFO L93 Difference]: Finished difference Result 211469 states and 326295 transitions. [2023-12-20 03:46:46,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:46,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 103 [2023-12-20 03:46:46,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:46,866 INFO L225 Difference]: With dead ends: 211469 [2023-12-20 03:46:46,867 INFO L226 Difference]: Without dead ends: 163101 [2023-12-20 03:46:46,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:46,935 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 117 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:46,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 426 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:47,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163101 states. [2023-12-20 03:46:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163101 to 162823. [2023-12-20 03:46:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162823 states, 162822 states have (on average 1.5393497193253982) internal successors, (250640), 162822 states have internal predecessors, (250640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162823 states to 162823 states and 250640 transitions. [2023-12-20 03:46:49,210 INFO L78 Accepts]: Start accepts. Automaton has 162823 states and 250640 transitions. Word has length 103 [2023-12-20 03:46:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:49,210 INFO L495 AbstractCegarLoop]: Abstraction has 162823 states and 250640 transitions. [2023-12-20 03:46:49,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:49,210 INFO L276 IsEmpty]: Start isEmpty. Operand 162823 states and 250640 transitions. [2023-12-20 03:46:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:46:49,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:49,212 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:49,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:46:49,213 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:49,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:49,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1717323440, now seen corresponding path program 1 times [2023-12-20 03:46:49,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:49,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922113562] [2023-12-20 03:46:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:49,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:49,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:49,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922113562] [2023-12-20 03:46:49,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922113562] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:49,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:49,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:49,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726058037] [2023-12-20 03:46:49,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:49,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:49,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:49,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:49,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:49,257 INFO L87 Difference]: Start difference. First operand 162823 states and 250640 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:50,881 INFO L93 Difference]: Finished difference Result 478825 states and 736111 transitions. [2023-12-20 03:46:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-12-20 03:46:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:46:51,402 INFO L225 Difference]: With dead ends: 478825 [2023-12-20 03:46:51,402 INFO L226 Difference]: Without dead ends: 316092 [2023-12-20 03:46:51,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:51,482 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 178 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:46:51,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 559 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:46:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316092 states. [2023-12-20 03:46:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316092 to 316090. [2023-12-20 03:46:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316090 states, 316089 states have (on average 1.5277089680438105) internal successors, (482892), 316089 states have internal predecessors, (482892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316090 states to 316090 states and 482892 transitions. [2023-12-20 03:46:56,240 INFO L78 Accepts]: Start accepts. Automaton has 316090 states and 482892 transitions. Word has length 104 [2023-12-20 03:46:56,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:46:56,240 INFO L495 AbstractCegarLoop]: Abstraction has 316090 states and 482892 transitions. [2023-12-20 03:46:56,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:56,240 INFO L276 IsEmpty]: Start isEmpty. Operand 316090 states and 482892 transitions. [2023-12-20 03:46:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:46:56,253 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:46:56,253 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:46:56,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:46:56,254 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:46:56,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:46:56,254 INFO L85 PathProgramCache]: Analyzing trace with hash 75578182, now seen corresponding path program 1 times [2023-12-20 03:46:56,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:46:56,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888591783] [2023-12-20 03:46:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:46:56,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:46:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:46:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:46:56,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:46:56,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888591783] [2023-12-20 03:46:56,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888591783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:46:56,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:46:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:46:56,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910987516] [2023-12-20 03:46:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:46:56,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:46:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:46:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:46:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:46:56,298 INFO L87 Difference]: Start difference. First operand 316090 states and 482892 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:46:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:46:59,609 INFO L93 Difference]: Finished difference Result 929008 states and 1417098 transitions. [2023-12-20 03:46:59,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:46:59,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2023-12-20 03:46:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:00,844 INFO L225 Difference]: With dead ends: 929008 [2023-12-20 03:47:00,844 INFO L226 Difference]: Without dead ends: 613058 [2023-12-20 03:47:01,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:01,007 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 159 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:01,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 522 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:01,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613058 states. [2023-12-20 03:47:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613058 to 613056. [2023-12-20 03:47:08,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613056 states, 613055 states have (on average 1.5153354919216058) internal successors, (928984), 613055 states have internal predecessors, (928984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:11,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613056 states to 613056 states and 928984 transitions. [2023-12-20 03:47:11,381 INFO L78 Accepts]: Start accepts. Automaton has 613056 states and 928984 transitions. Word has length 104 [2023-12-20 03:47:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:11,381 INFO L495 AbstractCegarLoop]: Abstraction has 613056 states and 928984 transitions. [2023-12-20 03:47:11,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand 613056 states and 928984 transitions. [2023-12-20 03:47:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:47:11,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:11,387 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:47:11,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:47:11,387 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:11,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1699523376, now seen corresponding path program 1 times [2023-12-20 03:47:11,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:11,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008168417] [2023-12-20 03:47:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:11,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:47:11,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:11,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008168417] [2023-12-20 03:47:11,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008168417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:11,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:11,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:47:11,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417109035] [2023-12-20 03:47:11,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:11,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:47:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:11,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:47:11,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:11,450 INFO L87 Difference]: Start difference. First operand 613056 states and 928984 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:16,655 INFO L93 Difference]: Finished difference Result 1305288 states and 1984174 transitions. [2023-12-20 03:47:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:47:16,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 03:47:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:18,627 INFO L225 Difference]: With dead ends: 1305288 [2023-12-20 03:47:18,628 INFO L226 Difference]: Without dead ends: 967450 [2023-12-20 03:47:19,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:47:19,216 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 117 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:19,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 421 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:47:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967450 states. [2023-12-20 03:47:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967450 to 965216. [2023-12-20 03:47:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965216 states, 965215 states have (on average 1.515450961702833) internal successors, (1462736), 965215 states have internal predecessors, (1462736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965216 states to 965216 states and 1462736 transitions. [2023-12-20 03:47:35,886 INFO L78 Accepts]: Start accepts. Automaton has 965216 states and 1462736 transitions. Word has length 104 [2023-12-20 03:47:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:47:35,886 INFO L495 AbstractCegarLoop]: Abstraction has 965216 states and 1462736 transitions. [2023-12-20 03:47:35,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 965216 states and 1462736 transitions. [2023-12-20 03:47:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:47:35,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:47:35,907 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:47:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:47:35,907 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:47:35,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:47:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1591369817, now seen corresponding path program 1 times [2023-12-20 03:47:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:47:35,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964632962] [2023-12-20 03:47:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:47:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:47:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:47:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 03:47:36,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:47:36,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964632962] [2023-12-20 03:47:36,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964632962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:47:36,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:47:36,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:47:36,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621017612] [2023-12-20 03:47:36,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:47:36,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 03:47:36,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:47:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 03:47:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:36,007 INFO L87 Difference]: Start difference. First operand 965216 states and 1462736 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:47:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:47:43,269 INFO L93 Difference]: Finished difference Result 1596414 states and 2427739 transitions. [2023-12-20 03:47:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 03:47:43,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2023-12-20 03:47:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:47:46,456 INFO L225 Difference]: With dead ends: 1596414 [2023-12-20 03:47:46,456 INFO L226 Difference]: Without dead ends: 1252484 [2023-12-20 03:47:46,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-20 03:47:46,764 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 262 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:47:46,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 801 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:47:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252484 states. [2023-12-20 03:47:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252484 to 1173576. [2023-12-20 03:48:01,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173576 states, 1173575 states have (on average 1.5134405555673902) internal successors, (1776136), 1173575 states have internal predecessors, (1776136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173576 states to 1173576 states and 1776136 transitions. [2023-12-20 03:48:07,874 INFO L78 Accepts]: Start accepts. Automaton has 1173576 states and 1776136 transitions. Word has length 104 [2023-12-20 03:48:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:48:07,874 INFO L495 AbstractCegarLoop]: Abstraction has 1173576 states and 1776136 transitions. [2023-12-20 03:48:07,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:48:07,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1173576 states and 1776136 transitions. [2023-12-20 03:48:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-12-20 03:48:07,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:48:07,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:48:07,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:48:07,880 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:48:07,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:48:07,880 INFO L85 PathProgramCache]: Analyzing trace with hash 567580630, now seen corresponding path program 1 times [2023-12-20 03:48:07,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:48:07,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711620445] [2023-12-20 03:48:07,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:48:07,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:48:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:48:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 03:48:07,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:48:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711620445] [2023-12-20 03:48:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711620445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:48:07,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:48:07,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:48:07,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599723835] [2023-12-20 03:48:07,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:48:07,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:48:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:48:07,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:48:07,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:48:07,918 INFO L87 Difference]: Start difference. First operand 1173576 states and 1776136 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)