/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_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:39:27,076 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:39:27,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 23:39:27,145 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:39:27,146 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:39:27,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:39:27,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:39:27,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:39:27,168 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:39:27,170 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:39:27,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:39:27,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:39:27,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:39:27,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:39:27,173 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:39:27,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:39:27,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:39:27,173 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:39:27,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:39:27,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:39:27,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:39:27,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:39:27,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:39:27,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:39:27,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:39:27,175 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:39:27,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:39:27,175 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:39:27,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:39:27,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:39:27,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:39:27,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:39:27,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:39:27,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:39:27,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:39:27,177 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:39:27,177 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:39:27,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:39:27,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:39:27,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:39:27,178 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:39:27,178 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:39:27,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:39:27,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:39:27,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:39:27,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:39:27,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:39:27,395 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:39:27,395 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:39:27,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-15 23:39:28,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:39:28,658 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:39:28,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-15 23:39:28,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48461b9c3/153e6c2a89734b14b5bf219a80cd417b/FLAG84cbeecbb [2023-12-15 23:39:29,046 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48461b9c3/153e6c2a89734b14b5bf219a80cd417b [2023-12-15 23:39:29,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:39:29,048 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:39:29,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:39:29,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:39:29,053 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:39:29,054 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d15b304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29, skipping insertion in model container [2023-12-15 23:39:29,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:39:29,231 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_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6730,6743] [2023-12-15 23:39:29,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:39:29,273 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:39:29,300 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_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[6730,6743] [2023-12-15 23:39:29,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:39:29,358 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:39:29,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29 WrapperNode [2023-12-15 23:39:29,359 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:39:29,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:39:29,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:39:29,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:39:29,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,411 INFO L138 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 530 [2023-12-15 23:39:29,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:39:29,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:39:29,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:39:29,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:39:29,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,422 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,432 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]. [2023-12-15 23:39:29,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:39:29,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:39:29,446 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:39:29,446 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:39:29,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (1/1) ... [2023-12-15 23:39:29,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:39:29,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:39:29,486 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) [2023-12-15 23:39:29,487 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 [2023-12-15 23:39:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:39:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:39:29,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:39:29,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:39:29,591 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:39:29,592 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:39:29,938 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:39:29,972 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:39:29,972 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:39:29,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:39:29 BoogieIcfgContainer [2023-12-15 23:39:29,972 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:39:29,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:39:29,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:39:29,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:39:29,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:39:29" (1/3) ... [2023-12-15 23:39:29,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43145afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:39:29, skipping insertion in model container [2023-12-15 23:39:29,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:39:29" (2/3) ... [2023-12-15 23:39:29,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43145afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:39:29, skipping insertion in model container [2023-12-15 23:39:29,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:39:29" (3/3) ... [2023-12-15 23:39:29,978 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-15 23:39:29,990 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:39:29,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:39:30,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:39:30,026 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;@4b07e06a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:39:30,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:39:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 115 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 23:39:30,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:30,037 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] [2023-12-15 23:39:30,037 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:30,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1168522135, now seen corresponding path program 1 times [2023-12-15 23:39:30,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:30,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82718654] [2023-12-15 23:39:30,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:30,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:30,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:30,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82718654] [2023-12-15 23:39:30,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82718654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:30,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:30,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:39:30,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652291615] [2023-12-15 23:39:30,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:30,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:39:30,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:30,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:39:30,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:39:30,414 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 115 states have internal predecessors, (199), 0 states have call successors, (0), 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 24.0) internal successors, (72), 3 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) [2023-12-15 23:39:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:30,460 INFO L93 Difference]: Finished difference Result 256 states and 418 transitions. [2023-12-15 23:39:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:39:30,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 [2023-12-15 23:39:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:30,472 INFO L225 Difference]: With dead ends: 256 [2023-12-15 23:39:30,472 INFO L226 Difference]: Without dead ends: 178 [2023-12-15 23:39:30,475 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 [2023-12-15 23:39:30,483 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 132 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:30,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 395 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-15 23:39:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2023-12-15 23:39:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.457142857142857) internal successors, (255), 175 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 255 transitions. [2023-12-15 23:39:30,523 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 255 transitions. Word has length 72 [2023-12-15 23:39:30,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:30,524 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 255 transitions. [2023-12-15 23:39:30,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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) [2023-12-15 23:39:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 255 transitions. [2023-12-15 23:39:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 23:39:30,526 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:30,526 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] [2023-12-15 23:39:30,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:39:30,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:30,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash 199267447, now seen corresponding path program 1 times [2023-12-15 23:39:30,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:30,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651897904] [2023-12-15 23:39:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:30,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:30,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:30,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651897904] [2023-12-15 23:39:30,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651897904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:30,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:30,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:39:30,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600671342] [2023-12-15 23:39:30,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:30,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:39:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:30,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:39:30,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:39:30,717 INFO L87 Difference]: Start difference. First operand 176 states and 255 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:30,755 INFO L93 Difference]: Finished difference Result 428 states and 655 transitions. [2023-12-15 23:39:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:39:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-15 23:39:30,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:30,758 INFO L225 Difference]: With dead ends: 428 [2023-12-15 23:39:30,758 INFO L226 Difference]: Without dead ends: 294 [2023-12-15 23:39:30,758 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 [2023-12-15 23:39:30,759 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 94 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 342 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 [2023-12-15 23:39:30,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 342 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-12-15 23:39:30,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 292. [2023-12-15 23:39:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.5085910652920962) internal successors, (439), 291 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:30,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 439 transitions. [2023-12-15 23:39:30,776 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 439 transitions. Word has length 73 [2023-12-15 23:39:30,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:30,776 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 439 transitions. [2023-12-15 23:39:30,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:30,776 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 439 transitions. [2023-12-15 23:39:30,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 23:39:30,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:30,777 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] [2023-12-15 23:39:30,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:39:30,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:30,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:30,778 INFO L85 PathProgramCache]: Analyzing trace with hash -619794628, now seen corresponding path program 1 times [2023-12-15 23:39:30,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239938330] [2023-12-15 23:39:30,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:30,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:30,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:30,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:30,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239938330] [2023-12-15 23:39:30,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239938330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:30,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:30,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:39:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318362759] [2023-12-15 23:39:30,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:30,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:39:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:30,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:39:30,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:39:30,874 INFO L87 Difference]: Start difference. First operand 292 states and 439 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:30,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:30,899 INFO L93 Difference]: Finished difference Result 760 states and 1181 transitions. [2023-12-15 23:39:30,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:39:30,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 23:39:30,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:30,906 INFO L225 Difference]: With dead ends: 760 [2023-12-15 23:39:30,906 INFO L226 Difference]: Without dead ends: 510 [2023-12-15 23:39:30,907 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 [2023-12-15 23:39:30,908 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 89 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 338 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 [2023-12-15 23:39:30,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 338 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:30,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-12-15 23:39:30,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 508. [2023-12-15 23:39:30,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.5364891518737673) internal successors, (779), 507 states have internal predecessors, (779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 779 transitions. [2023-12-15 23:39:30,937 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 779 transitions. Word has length 74 [2023-12-15 23:39:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:30,937 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 779 transitions. [2023-12-15 23:39:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 779 transitions. [2023-12-15 23:39:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-15 23:39:30,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:30,938 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] [2023-12-15 23:39:30,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:39:30,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:30,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash -544666826, now seen corresponding path program 1 times [2023-12-15 23:39:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60933369] [2023-12-15 23:39:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:30,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:31,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:31,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60933369] [2023-12-15 23:39:31,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60933369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:31,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:31,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:39:31,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294939258] [2023-12-15 23:39:31,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:31,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:39:31,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:39:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:39:31,014 INFO L87 Difference]: Start difference. First operand 508 states and 779 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:31,032 INFO L93 Difference]: Finished difference Result 1376 states and 2149 transitions. [2023-12-15 23:39:31,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:39:31,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-15 23:39:31,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:31,036 INFO L225 Difference]: With dead ends: 1376 [2023-12-15 23:39:31,036 INFO L226 Difference]: Without dead ends: 910 [2023-12-15 23:39:31,039 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 [2023-12-15 23:39:31,045 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 84 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 334 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 [2023-12-15 23:39:31,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 334 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2023-12-15 23:39:31,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 908. [2023-12-15 23:39:31,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 907 states have (on average 1.5468577728776185) internal successors, (1403), 907 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1403 transitions. [2023-12-15 23:39:31,064 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1403 transitions. Word has length 75 [2023-12-15 23:39:31,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:31,064 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1403 transitions. [2023-12-15 23:39:31,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,064 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1403 transitions. [2023-12-15 23:39:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-15 23:39:31,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:31,069 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] [2023-12-15 23:39:31,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:39:31,069 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:31,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:31,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1064989273, now seen corresponding path program 1 times [2023-12-15 23:39:31,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:31,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407821698] [2023-12-15 23:39:31,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:31,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:31,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:31,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407821698] [2023-12-15 23:39:31,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407821698] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:31,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:31,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:39:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905770715] [2023-12-15 23:39:31,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:31,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:39:31,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:39:31,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:39:31,154 INFO L87 Difference]: Start difference. First operand 908 states and 1403 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:31,172 INFO L93 Difference]: Finished difference Result 2512 states and 3917 transitions. [2023-12-15 23:39:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:39:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-12-15 23:39:31,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:31,178 INFO L225 Difference]: With dead ends: 2512 [2023-12-15 23:39:31,178 INFO L226 Difference]: Without dead ends: 1646 [2023-12-15 23:39:31,179 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 [2023-12-15 23:39:31,179 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 79 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 330 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 [2023-12-15 23:39:31,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 330 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1646 states. [2023-12-15 23:39:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1646 to 1644. [2023-12-15 23:39:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1644 states, 1643 states have (on average 1.5453438831405966) internal successors, (2539), 1643 states have internal predecessors, (2539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2539 transitions. [2023-12-15 23:39:31,202 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2539 transitions. Word has length 76 [2023-12-15 23:39:31,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:31,202 INFO L495 AbstractCegarLoop]: Abstraction has 1644 states and 2539 transitions. [2023-12-15 23:39:31,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2539 transitions. [2023-12-15 23:39:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-15 23:39:31,204 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:31,204 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, 1] [2023-12-15 23:39:31,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:39:31,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:31,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1230877810, now seen corresponding path program 1 times [2023-12-15 23:39:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:31,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628308720] [2023-12-15 23:39:31,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:31,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:31,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:31,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:31,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628308720] [2023-12-15 23:39:31,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628308720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:31,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:31,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:39:31,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064732893] [2023-12-15 23:39:31,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:31,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:39:31,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:31,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:39:31,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:39:31,364 INFO L87 Difference]: Start difference. First operand 1644 states and 2539 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:31,712 INFO L93 Difference]: Finished difference Result 20868 states and 32503 transitions. [2023-12-15 23:39:31,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-15 23:39:31,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-15 23:39:31,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:31,763 INFO L225 Difference]: With dead ends: 20868 [2023-12-15 23:39:31,764 INFO L226 Difference]: Without dead ends: 19266 [2023-12-15 23:39:31,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:39:31,772 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1770 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2901 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:31,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 2901 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:39:31,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19266 states. [2023-12-15 23:39:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19266 to 3244. [2023-12-15 23:39:31,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 3243 states have (on average 1.5328399629972247) internal successors, (4971), 3243 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 4971 transitions. [2023-12-15 23:39:31,932 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 4971 transitions. Word has length 77 [2023-12-15 23:39:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:31,932 INFO L495 AbstractCegarLoop]: Abstraction has 3244 states and 4971 transitions. [2023-12-15 23:39:31,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 4971 transitions. [2023-12-15 23:39:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-15 23:39:31,933 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:31,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:39:31,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:39:31,933 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:31,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:31,933 INFO L85 PathProgramCache]: Analyzing trace with hash 835749454, now seen corresponding path program 1 times [2023-12-15 23:39:31,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:31,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453635320] [2023-12-15 23:39:31,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:31,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:32,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:32,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453635320] [2023-12-15 23:39:32,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453635320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:32,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:32,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:39:32,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867477279] [2023-12-15 23:39:32,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:32,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:39:32,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:39:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:39:32,020 INFO L87 Difference]: Start difference. First operand 3244 states and 4971 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:32,065 INFO L93 Difference]: Finished difference Result 9296 states and 14221 transitions. [2023-12-15 23:39:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:39:32,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-15 23:39:32,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:32,089 INFO L225 Difference]: With dead ends: 9296 [2023-12-15 23:39:32,089 INFO L226 Difference]: Without dead ends: 6094 [2023-12-15 23:39:32,094 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 [2023-12-15 23:39:32,095 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 69 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:32,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 260 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2023-12-15 23:39:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 6028. [2023-12-15 23:39:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 6027 states have (on average 1.5043968807035009) internal successors, (9067), 6027 states have internal predecessors, (9067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 9067 transitions. [2023-12-15 23:39:32,223 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 9067 transitions. Word has length 79 [2023-12-15 23:39:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:32,223 INFO L495 AbstractCegarLoop]: Abstraction has 6028 states and 9067 transitions. [2023-12-15 23:39:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 9067 transitions. [2023-12-15 23:39:32,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-15 23:39:32,226 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:32,226 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, 1, 1, 1] [2023-12-15 23:39:32,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:39:32,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:32,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:32,227 INFO L85 PathProgramCache]: Analyzing trace with hash 856752109, now seen corresponding path program 1 times [2023-12-15 23:39:32,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:32,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244704542] [2023-12-15 23:39:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:32,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:32,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244704542] [2023-12-15 23:39:32,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244704542] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:32,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:32,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:39:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433809728] [2023-12-15 23:39:32,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:32,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:39:32,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:39:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:39:32,537 INFO L87 Difference]: Start difference. First operand 6028 states and 9067 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:32,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:32,754 INFO L93 Difference]: Finished difference Result 12016 states and 18093 transitions. [2023-12-15 23:39:32,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:39:32,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-15 23:39:32,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:32,763 INFO L225 Difference]: With dead ends: 12016 [2023-12-15 23:39:32,763 INFO L226 Difference]: Without dead ends: 6030 [2023-12-15 23:39:32,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-15 23:39:32,771 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 472 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:32,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 745 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:39:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2023-12-15 23:39:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 6028. [2023-12-15 23:39:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 6027 states have (on average 1.49377799900448) internal successors, (9003), 6027 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 9003 transitions. [2023-12-15 23:39:32,883 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 9003 transitions. Word has length 79 [2023-12-15 23:39:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:32,884 INFO L495 AbstractCegarLoop]: Abstraction has 6028 states and 9003 transitions. [2023-12-15 23:39:32,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 9003 transitions. [2023-12-15 23:39:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 23:39:32,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:32,885 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, 1, 1, 1, 1] [2023-12-15 23:39:32,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:39:32,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:32,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:32,886 INFO L85 PathProgramCache]: Analyzing trace with hash 89483993, now seen corresponding path program 1 times [2023-12-15 23:39:32,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:32,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482580338] [2023-12-15 23:39:32,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:32,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:32,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:32,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482580338] [2023-12-15 23:39:32,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482580338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:32,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:32,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:39:32,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718877629] [2023-12-15 23:39:32,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:32,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:39:32,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:32,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:39:32,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:39:32,939 INFO L87 Difference]: Start difference. First operand 6028 states and 9003 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:32,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:32,969 INFO L93 Difference]: Finished difference Result 11795 states and 17777 transitions. [2023-12-15 23:39:32,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:39:32,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 23:39:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:32,982 INFO L225 Difference]: With dead ends: 11795 [2023-12-15 23:39:32,982 INFO L226 Difference]: Without dead ends: 8592 [2023-12-15 23:39:32,987 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 [2023-12-15 23:39:32,990 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 101 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 354 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 [2023-12-15 23:39:32,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 354 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:32,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2023-12-15 23:39:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 8590. [2023-12-15 23:39:33,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.491791826755152) internal successors, (12813), 8589 states have internal predecessors, (12813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12813 transitions. [2023-12-15 23:39:33,115 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12813 transitions. Word has length 80 [2023-12-15 23:39:33,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:33,115 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12813 transitions. [2023-12-15 23:39:33,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,115 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12813 transitions. [2023-12-15 23:39:33,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 23:39:33,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:33,116 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, 1, 1, 1, 1] [2023-12-15 23:39:33,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:39:33,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:33,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:33,117 INFO L85 PathProgramCache]: Analyzing trace with hash 787602291, now seen corresponding path program 1 times [2023-12-15 23:39:33,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:33,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007085318] [2023-12-15 23:39:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:33,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:33,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:33,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007085318] [2023-12-15 23:39:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007085318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:33,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:33,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:39:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525979006] [2023-12-15 23:39:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:39:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:39:33,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:39:33,184 INFO L87 Difference]: Start difference. First operand 8590 states and 12813 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:33,308 INFO L93 Difference]: Finished difference Result 17136 states and 25582 transitions. [2023-12-15 23:39:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:39:33,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 23:39:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:33,320 INFO L225 Difference]: With dead ends: 17136 [2023-12-15 23:39:33,320 INFO L226 Difference]: Without dead ends: 8590 [2023-12-15 23:39:33,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:39:33,326 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 388 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:33,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 115 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:39:33,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-15 23:39:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 8590. [2023-12-15 23:39:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.480614739783444) internal successors, (12717), 8589 states have internal predecessors, (12717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12717 transitions. [2023-12-15 23:39:33,416 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12717 transitions. Word has length 80 [2023-12-15 23:39:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:33,416 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12717 transitions. [2023-12-15 23:39:33,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,417 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12717 transitions. [2023-12-15 23:39:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 23:39:33,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:33,417 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, 1, 1, 1, 1] [2023-12-15 23:39:33,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:39:33,417 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:33,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:33,418 INFO L85 PathProgramCache]: Analyzing trace with hash 24738584, now seen corresponding path program 1 times [2023-12-15 23:39:33,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:33,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959653110] [2023-12-15 23:39:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:33,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:33,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:33,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959653110] [2023-12-15 23:39:33,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959653110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:33,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:33,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:39:33,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2954082] [2023-12-15 23:39:33,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:33,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:39:33,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:33,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:39:33,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:39:33,482 INFO L87 Difference]: Start difference. First operand 8590 states and 12717 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:33,574 INFO L93 Difference]: Finished difference Result 17136 states and 25390 transitions. [2023-12-15 23:39:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:39:33,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 23:39:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:33,587 INFO L225 Difference]: With dead ends: 17136 [2023-12-15 23:39:33,587 INFO L226 Difference]: Without dead ends: 8590 [2023-12-15 23:39:33,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:39:33,595 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 359 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:33,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 131 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-15 23:39:33,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 8590. [2023-12-15 23:39:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.4694376528117359) internal successors, (12621), 8589 states have internal predecessors, (12621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12621 transitions. [2023-12-15 23:39:33,722 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12621 transitions. Word has length 80 [2023-12-15 23:39:33,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:33,722 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12621 transitions. [2023-12-15 23:39:33,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,723 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12621 transitions. [2023-12-15 23:39:33,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 23:39:33,723 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:33,723 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, 1, 1, 1, 1] [2023-12-15 23:39:33,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:39:33,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:33,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:33,724 INFO L85 PathProgramCache]: Analyzing trace with hash 890270973, now seen corresponding path program 1 times [2023-12-15 23:39:33,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:33,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117383479] [2023-12-15 23:39:33,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117383479] [2023-12-15 23:39:33,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117383479] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:33,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:33,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:39:33,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712283332] [2023-12-15 23:39:33,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:39:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:33,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:39:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:39:33,795 INFO L87 Difference]: Start difference. First operand 8590 states and 12621 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:33,878 INFO L93 Difference]: Finished difference Result 17136 states and 25198 transitions. [2023-12-15 23:39:33,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:39:33,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 23:39:33,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:33,891 INFO L225 Difference]: With dead ends: 17136 [2023-12-15 23:39:33,891 INFO L226 Difference]: Without dead ends: 8590 [2023-12-15 23:39:33,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:39:33,900 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 369 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:33,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 123 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-15 23:39:33,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 8590. [2023-12-15 23:39:33,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.4582605658400278) internal successors, (12525), 8589 states have internal predecessors, (12525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12525 transitions. [2023-12-15 23:39:33,989 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12525 transitions. Word has length 80 [2023-12-15 23:39:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:33,989 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12525 transitions. [2023-12-15 23:39:33,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12525 transitions. [2023-12-15 23:39:33,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 23:39:33,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:33,990 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, 1, 1, 1, 1] [2023-12-15 23:39:33,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:39:33,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:33,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1018356280, now seen corresponding path program 1 times [2023-12-15 23:39:33,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:33,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793811336] [2023-12-15 23:39:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:34,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:34,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793811336] [2023-12-15 23:39:34,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793811336] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:34,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:34,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:39:34,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019763979] [2023-12-15 23:39:34,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:34,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:39:34,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:34,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:39:34,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:39:34,096 INFO L87 Difference]: Start difference. First operand 8590 states and 12525 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:34,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:34,178 INFO L93 Difference]: Finished difference Result 17136 states and 25006 transitions. [2023-12-15 23:39:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:39:34,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 23:39:34,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:34,190 INFO L225 Difference]: With dead ends: 17136 [2023-12-15 23:39:34,191 INFO L226 Difference]: Without dead ends: 8590 [2023-12-15 23:39:34,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:39:34,200 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 392 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:34,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 107 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:34,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8590 states. [2023-12-15 23:39:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8590 to 8590. [2023-12-15 23:39:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8590 states, 8589 states have (on average 1.44708347886832) internal successors, (12429), 8589 states have internal predecessors, (12429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8590 states to 8590 states and 12429 transitions. [2023-12-15 23:39:34,316 INFO L78 Accepts]: Start accepts. Automaton has 8590 states and 12429 transitions. Word has length 80 [2023-12-15 23:39:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:34,316 INFO L495 AbstractCegarLoop]: Abstraction has 8590 states and 12429 transitions. [2023-12-15 23:39:34,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8590 states and 12429 transitions. [2023-12-15 23:39:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-15 23:39:34,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:34,317 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, 1, 1, 1, 1] [2023-12-15 23:39:34,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:39:34,317 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:34,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:34,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1386627507, now seen corresponding path program 1 times [2023-12-15 23:39:34,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:34,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104895298] [2023-12-15 23:39:34,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:34,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:34,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:34,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:34,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104895298] [2023-12-15 23:39:34,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104895298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:34,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:34,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:39:34,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603655885] [2023-12-15 23:39:34,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:34,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:39:34,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:39:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:39:34,459 INFO L87 Difference]: Start difference. First operand 8590 states and 12429 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:34,518 INFO L93 Difference]: Finished difference Result 15484 states and 22340 transitions. [2023-12-15 23:39:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 23:39:34,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-12-15 23:39:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:34,541 INFO L225 Difference]: With dead ends: 15484 [2023-12-15 23:39:34,541 INFO L226 Difference]: Without dead ends: 15482 [2023-12-15 23:39:34,546 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 [2023-12-15 23:39:34,546 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 204 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:34,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 690 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15482 states. [2023-12-15 23:39:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15482 to 8846. [2023-12-15 23:39:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8846 states, 8845 states have (on average 1.4305257207461843) internal successors, (12653), 8845 states have internal predecessors, (12653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:34,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12653 transitions. [2023-12-15 23:39:34,680 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12653 transitions. Word has length 80 [2023-12-15 23:39:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:34,681 INFO L495 AbstractCegarLoop]: Abstraction has 8846 states and 12653 transitions. [2023-12-15 23:39:34,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12653 transitions. [2023-12-15 23:39:34,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 23:39:34,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:34,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:39:34,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:39:34,684 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:34,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash 547687804, now seen corresponding path program 1 times [2023-12-15 23:39:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:34,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648848735] [2023-12-15 23:39:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-15 23:39:34,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:34,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648848735] [2023-12-15 23:39:34,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648848735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:34,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:34,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:39:34,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895183236] [2023-12-15 23:39:34,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:34,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:39:34,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:34,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:39:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:39:34,823 INFO L87 Difference]: Start difference. First operand 8846 states and 12653 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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) [2023-12-15 23:39:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:35,023 INFO L93 Difference]: Finished difference Result 63292 states and 90580 transitions. [2023-12-15 23:39:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:39:35,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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 111 [2023-12-15 23:39:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:35,113 INFO L225 Difference]: With dead ends: 63292 [2023-12-15 23:39:35,114 INFO L226 Difference]: Without dead ends: 54490 [2023-12-15 23:39:35,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:39:35,135 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1549 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:35,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1129 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:39:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54490 states. [2023-12-15 23:39:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54490 to 17646. [2023-12-15 23:39:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17646 states, 17645 states have (on average 1.4261830546897138) internal successors, (25165), 17645 states have internal predecessors, (25165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17646 states to 17646 states and 25165 transitions. [2023-12-15 23:39:35,608 INFO L78 Accepts]: Start accepts. Automaton has 17646 states and 25165 transitions. Word has length 111 [2023-12-15 23:39:35,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:35,608 INFO L495 AbstractCegarLoop]: Abstraction has 17646 states and 25165 transitions. [2023-12-15 23:39:35,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 8 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) [2023-12-15 23:39:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 17646 states and 25165 transitions. [2023-12-15 23:39:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 23:39:35,612 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:35,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:39:35,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:39:35,613 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:35,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:35,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1176854258, now seen corresponding path program 1 times [2023-12-15 23:39:35,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950326351] [2023-12-15 23:39:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-15 23:39:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950326351] [2023-12-15 23:39:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950326351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:35,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:35,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:39:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655122074] [2023-12-15 23:39:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:35,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:39:35,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:39:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:39:35,843 INFO L87 Difference]: Start difference. First operand 17646 states and 25165 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2023-12-15 23:39:36,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:36,158 INFO L93 Difference]: Finished difference Result 72092 states and 103092 transitions. [2023-12-15 23:39:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:39:36,159 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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 111 [2023-12-15 23:39:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:36,242 INFO L225 Difference]: With dead ends: 72092 [2023-12-15 23:39:36,242 INFO L226 Difference]: Without dead ends: 63290 [2023-12-15 23:39:36,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:39:36,258 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1438 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:36,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 1194 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:39:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63290 states. [2023-12-15 23:39:36,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63290 to 30862. [2023-12-15 23:39:36,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30862 states, 30861 states have (on average 1.420984413985289) internal successors, (43853), 30861 states have internal predecessors, (43853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30862 states to 30862 states and 43853 transitions. [2023-12-15 23:39:36,782 INFO L78 Accepts]: Start accepts. Automaton has 30862 states and 43853 transitions. Word has length 111 [2023-12-15 23:39:36,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:36,782 INFO L495 AbstractCegarLoop]: Abstraction has 30862 states and 43853 transitions. [2023-12-15 23:39:36,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 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) [2023-12-15 23:39:36,782 INFO L276 IsEmpty]: Start isEmpty. Operand 30862 states and 43853 transitions. [2023-12-15 23:39:36,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 23:39:36,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:36,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:39:36,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:39:36,787 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:36,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash -22908152, now seen corresponding path program 1 times [2023-12-15 23:39:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:36,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111726102] [2023-12-15 23:39:36,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:36,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-15 23:39:37,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:37,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111726102] [2023-12-15 23:39:37,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111726102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:37,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:37,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:39:37,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958468587] [2023-12-15 23:39:37,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:37,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:39:37,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:37,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:39:37,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:39:37,014 INFO L87 Difference]: Start difference. First operand 30862 states and 43853 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2023-12-15 23:39:37,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:37,370 INFO L93 Difference]: Finished difference Result 80892 states and 115604 transitions. [2023-12-15 23:39:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:39:37,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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 111 [2023-12-15 23:39:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:37,452 INFO L225 Difference]: With dead ends: 80892 [2023-12-15 23:39:37,452 INFO L226 Difference]: Without dead ends: 72090 [2023-12-15 23:39:37,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:39:37,483 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 1272 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:37,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 1250 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:39:37,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72090 states. [2023-12-15 23:39:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72090 to 39662. [2023-12-15 23:39:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39662 states, 39661 states have (on average 1.4211694107561585) internal successors, (56365), 39661 states have internal predecessors, (56365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39662 states to 39662 states and 56365 transitions. [2023-12-15 23:39:38,211 INFO L78 Accepts]: Start accepts. Automaton has 39662 states and 56365 transitions. Word has length 111 [2023-12-15 23:39:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:38,212 INFO L495 AbstractCegarLoop]: Abstraction has 39662 states and 56365 transitions. [2023-12-15 23:39:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2023-12-15 23:39:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 39662 states and 56365 transitions. [2023-12-15 23:39:38,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 23:39:38,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:38,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:39:38,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:39:38,220 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:38,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:38,221 INFO L85 PathProgramCache]: Analyzing trace with hash -880808830, now seen corresponding path program 1 times [2023-12-15 23:39:38,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:38,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049627491] [2023-12-15 23:39:38,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:38,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-15 23:39:38,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:38,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049627491] [2023-12-15 23:39:38,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049627491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:38,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:38,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:39:38,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517060699] [2023-12-15 23:39:38,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:38,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:39:38,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:38,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:39:38,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:39:38,352 INFO L87 Difference]: Start difference. First operand 39662 states and 56365 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:38,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:38,726 INFO L93 Difference]: Finished difference Result 89692 states and 128116 transitions. [2023-12-15 23:39:38,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:39:38,727 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 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 111 [2023-12-15 23:39:38,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:38,812 INFO L225 Difference]: With dead ends: 89692 [2023-12-15 23:39:38,813 INFO L226 Difference]: Without dead ends: 80890 [2023-12-15 23:39:38,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:39:38,838 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1269 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:38,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 1328 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:39:38,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80890 states. [2023-12-15 23:39:39,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80890 to 48462. [2023-12-15 23:39:39,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48462 states, 48461 states have (on average 1.421287220651658) internal successors, (68877), 48461 states have internal predecessors, (68877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48462 states to 48462 states and 68877 transitions. [2023-12-15 23:39:39,645 INFO L78 Accepts]: Start accepts. Automaton has 48462 states and 68877 transitions. Word has length 111 [2023-12-15 23:39:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:39,645 INFO L495 AbstractCegarLoop]: Abstraction has 48462 states and 68877 transitions. [2023-12-15 23:39:39,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 48462 states and 68877 transitions. [2023-12-15 23:39:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-15 23:39:39,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:39,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:39:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:39:39,651 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:39,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1771842058, now seen corresponding path program 1 times [2023-12-15 23:39:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643128351] [2023-12-15 23:39:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-15 23:39:39,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:39,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643128351] [2023-12-15 23:39:39,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643128351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:39,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:39,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:39:39,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550028633] [2023-12-15 23:39:39,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:39,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:39:39,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:39:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:39:39,760 INFO L87 Difference]: Start difference. First operand 48462 states and 68877 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:40,253 INFO L93 Difference]: Finished difference Result 98492 states and 140628 transitions. [2023-12-15 23:39:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:39:40,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 111 [2023-12-15 23:39:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:40,374 INFO L225 Difference]: With dead ends: 98492 [2023-12-15 23:39:40,374 INFO L226 Difference]: Without dead ends: 89690 [2023-12-15 23:39:40,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:39:40,402 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1373 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:40,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1438 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:39:40,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89690 states. [2023-12-15 23:39:41,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89690 to 57262. [2023-12-15 23:39:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57262 states, 57261 states have (on average 1.421368819964723) internal successors, (81389), 57261 states have internal predecessors, (81389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57262 states to 57262 states and 81389 transitions. [2023-12-15 23:39:41,439 INFO L78 Accepts]: Start accepts. Automaton has 57262 states and 81389 transitions. Word has length 111 [2023-12-15 23:39:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:41,439 INFO L495 AbstractCegarLoop]: Abstraction has 57262 states and 81389 transitions. [2023-12-15 23:39:41,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 57262 states and 81389 transitions. [2023-12-15 23:39:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-15 23:39:41,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:41,444 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:39:41,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:39:41,445 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:41,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash -721790003, now seen corresponding path program 1 times [2023-12-15 23:39:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:41,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195508294] [2023-12-15 23:39:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:39:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195508294] [2023-12-15 23:39:41,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195508294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:39:41,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:39:41,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-15 23:39:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755728808] [2023-12-15 23:39:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:39:41,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:39:41,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:39:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:39:41,584 INFO L87 Difference]: Start difference. First operand 57262 states and 81389 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:41,905 INFO L93 Difference]: Finished difference Result 101724 states and 145332 transitions. [2023-12-15 23:39:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-15 23:39:41,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 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 112 [2023-12-15 23:39:41,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:42,145 INFO L225 Difference]: With dead ends: 101724 [2023-12-15 23:39:42,145 INFO L226 Difference]: Without dead ends: 95706 [2023-12-15 23:39:42,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-15 23:39:42,163 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 1368 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:42,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1332 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:39:42,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95706 states. [2023-12-15 23:39:42,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95706 to 63278. [2023-12-15 23:39:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63278 states, 63277 states have (on average 1.422776048169161) internal successors, (90029), 63277 states have internal predecessors, (90029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63278 states to 63278 states and 90029 transitions. [2023-12-15 23:39:43,045 INFO L78 Accepts]: Start accepts. Automaton has 63278 states and 90029 transitions. Word has length 112 [2023-12-15 23:39:43,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:39:43,046 INFO L495 AbstractCegarLoop]: Abstraction has 63278 states and 90029 transitions. [2023-12-15 23:39:43,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 63278 states and 90029 transitions. [2023-12-15 23:39:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-15 23:39:43,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:39:43,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:39:43,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:39:43,056 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:39:43,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:39:43,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1311967558, now seen corresponding path program 1 times [2023-12-15 23:39:43,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:39:43,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649464078] [2023-12-15 23:39:43,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:43,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:39:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:39:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:39:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649464078] [2023-12-15 23:39:43,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649464078] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:39:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910293873] [2023-12-15 23:39:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:39:43,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:39:43,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:39:43,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:39:43,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 23:39:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:39:43,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-15 23:39:43,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:39:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:39:44,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:39:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 23:39:44,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910293873] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:39:44,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:39:44,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2023-12-15 23:39:44,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220051336] [2023-12-15 23:39:44,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:39:44,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-15 23:39:44,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:39:44,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-15 23:39:44,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:39:44,207 INFO L87 Difference]: Start difference. First operand 63278 states and 90029 transitions. Second operand has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:39:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:39:56,082 INFO L93 Difference]: Finished difference Result 1150578 states and 1611551 transitions. [2023-12-15 23:39:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2023-12-15 23:39:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 states have internal predecessors, (326), 0 states have call successors, (0), 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 113 [2023-12-15 23:39:56,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:39:57,831 INFO L225 Difference]: With dead ends: 1150578 [2023-12-15 23:39:57,832 INFO L226 Difference]: Without dead ends: 1087344 [2023-12-15 23:39:58,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29340 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=8236, Invalid=53516, Unknown=0, NotChecked=0, Total=61752 [2023-12-15 23:39:58,242 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 10895 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 3175 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10895 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 3175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:39:58,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10895 Valid, 2669 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 3175 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 23:39:58,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087344 states. [2023-12-15 23:40:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087344 to 441046. [2023-12-15 23:40:06,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441046 states, 441045 states have (on average 1.3952249770431588) internal successors, (615357), 441045 states have internal predecessors, (615357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:07,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441046 states to 441046 states and 615357 transitions. [2023-12-15 23:40:07,763 INFO L78 Accepts]: Start accepts. Automaton has 441046 states and 615357 transitions. Word has length 113 [2023-12-15 23:40:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:07,763 INFO L495 AbstractCegarLoop]: Abstraction has 441046 states and 615357 transitions. [2023-12-15 23:40:07,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 19.176470588235293) internal successors, (326), 17 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:07,764 INFO L276 IsEmpty]: Start isEmpty. Operand 441046 states and 615357 transitions. [2023-12-15 23:40:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-15 23:40:07,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:07,773 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:07,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 23:40:07,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-15 23:40:07,985 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:07,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:07,986 INFO L85 PathProgramCache]: Analyzing trace with hash -350314400, now seen corresponding path program 1 times [2023-12-15 23:40:07,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:07,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133380933] [2023-12-15 23:40:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:07,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:08,056 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:08,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:08,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133380933] [2023-12-15 23:40:08,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133380933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:40:08,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:40:08,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:40:08,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373639108] [2023-12-15 23:40:08,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:40:08,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:40:08,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:40:08,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:40:08,058 INFO L87 Difference]: Start difference. First operand 441046 states and 615357 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:40:10,613 INFO L93 Difference]: Finished difference Result 780530 states and 1088408 transitions. [2023-12-15 23:40:10,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:40:10,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2023-12-15 23:40:10,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:40:11,431 INFO L225 Difference]: With dead ends: 780530 [2023-12-15 23:40:11,432 INFO L226 Difference]: Without dead ends: 339528 [2023-12-15 23:40:11,554 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 [2023-12-15 23:40:11,563 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 69 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:11,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 336 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:40:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339528 states. [2023-12-15 23:40:14,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339528 to 339526. [2023-12-15 23:40:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339526 states, 339525 states have (on average 1.3808585523893675) internal successors, (468836), 339525 states have internal predecessors, (468836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339526 states to 339526 states and 468836 transitions. [2023-12-15 23:40:15,968 INFO L78 Accepts]: Start accepts. Automaton has 339526 states and 468836 transitions. Word has length 113 [2023-12-15 23:40:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:40:15,968 INFO L495 AbstractCegarLoop]: Abstraction has 339526 states and 468836 transitions. [2023-12-15 23:40:15,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:40:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 339526 states and 468836 transitions. [2023-12-15 23:40:15,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-15 23:40:15,974 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:40:15,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:15,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:40:15,974 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:40:15,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:40:15,974 INFO L85 PathProgramCache]: Analyzing trace with hash -547774863, now seen corresponding path program 1 times [2023-12-15 23:40:15,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:40:15,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031086346] [2023-12-15 23:40:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:15,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:40:16,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:40:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031086346] [2023-12-15 23:40:16,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031086346] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 23:40:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341689722] [2023-12-15 23:40:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:40:16,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 23:40:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:40:16,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 23:40:16,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 23:40:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:40:16,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 23:40:16,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 23:40:16,924 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:16,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 23:40:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:40:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341689722] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 23:40:17,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 23:40:17,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 26 [2023-12-15 23:40:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327246359] [2023-12-15 23:40:17,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 23:40:17,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-15 23:40:17,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:40:17,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-15 23:40:17,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2023-12-15 23:40:17,706 INFO L87 Difference]: Start difference. First operand 339526 states and 468836 transitions. Second operand has 27 states, 27 states have (on average 12.222222222222221) internal successors, (330), 26 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 23:40:23,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2023-12-15 23:40:23,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11867 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5008, Invalid=27212, Unknown=0, NotChecked=0, Total=32220 [2023-12-15 23:40:23,230 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 4562 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4562 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-15 23:40:23,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4562 Valid, 937 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-15 23:40:23,231 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:40:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:40:23,239 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:40:23,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 23:40:23,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-15 23:40:23,435 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (339526states) and FLOYD_HOARE automaton (currently 155 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-2-1 term,while SimplifyDDA2 was simplifying 14 xjuncts wrt. a ATOM-1 context. [2023-12-15 23:40:23,438 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:40:23,440 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:40:23,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:40:23 BoogieIcfgContainer [2023-12-15 23:40:23,441 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:40:23,441 INFO L158 Benchmark]: Toolchain (without parser) took 54393.11ms. Allocated memory was 222.3MB in the beginning and 7.6GB in the end (delta: 7.4GB). Free memory was 158.7MB in the beginning and 4.5GB in the end (delta: -4.4GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-15 23:40:23,442 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 222.3MB. Free memory is still 172.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:40:23,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.70ms. Allocated memory was 222.3MB in the beginning and 278.9MB in the end (delta: 56.6MB). Free memory was 158.6MB in the beginning and 244.6MB in the end (delta: -86.0MB). Peak memory consumption was 25.6MB. Max. memory is 8.0GB. [2023-12-15 23:40:23,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.50ms. Allocated memory is still 278.9MB. Free memory was 244.6MB in the beginning and 241.6MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:40:23,442 INFO L158 Benchmark]: Boogie Preprocessor took 33.17ms. Allocated memory is still 278.9MB. Free memory was 241.6MB in the beginning and 238.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-15 23:40:23,442 INFO L158 Benchmark]: RCFGBuilder took 526.38ms. Allocated memory is still 278.9MB. Free memory was 238.4MB in the beginning and 203.3MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-12-15 23:40:23,442 INFO L158 Benchmark]: TraceAbstraction took 53466.85ms. Allocated memory was 278.9MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 202.8MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-12-15 23:40:23,443 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 222.3MB. Free memory is still 172.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 309.70ms. Allocated memory was 222.3MB in the beginning and 278.9MB in the end (delta: 56.6MB). Free memory was 158.6MB in the beginning and 244.6MB in the end (delta: -86.0MB). Peak memory consumption was 25.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.50ms. Allocated memory is still 278.9MB. Free memory was 244.6MB in the beginning and 241.6MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.17ms. Allocated memory is still 278.9MB. Free memory was 241.6MB in the beginning and 238.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 526.38ms. Allocated memory is still 278.9MB. Free memory was 238.4MB in the beginning and 203.3MB in the end (delta: 35.1MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 53466.85ms. Allocated memory was 278.9MB in the beginning and 7.6GB in the end (delta: 7.3GB). Free memory was 202.8MB in the beginning and 4.5GB in the end (delta: -4.3GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 342]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 342). Cancelled while NwaCegarLoop was constructing difference of abstraction (339526states) and FLOYD_HOARE automaton (currently 155 states, 27 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-15-2-1 term,while SimplifyDDA2 was simplifying 14 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.4s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 27.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28397 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28397 mSDsluCounter, 18778 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14179 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5742 IncrementalHoareTripleChecker+Invalid, 5911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 4599 mSDtfsCounter, 5742 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1023 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 548 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41248 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=441046occurred in iteration=21, InterpolantAutomatonStates: 354, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 19.6s AutomataMinimizationTime, 22 MinimizatonAttempts, 868022 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 2319 NumberOfCodeBlocks, 2319 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 2519 ConstructedInterpolants, 0 QuantifiedInterpolants, 17171 SizeOfPredicates, 7 NumberOfNonLiveVariables, 903 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 164/232 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown