/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 06:03:26,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 06:03:26,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 06:03:26,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 06:03:26,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 06:03:26,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 06:03:26,661 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 06:03:26,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 06:03:26,662 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 06:03:26,665 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 06:03:26,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 06:03:26,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 06:03:26,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 06:03:26,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 06:03:26,667 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 06:03:26,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 06:03:26,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 06:03:26,668 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 06:03:26,668 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 06:03:26,668 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 06:03:26,668 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 06:03:26,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 06:03:26,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 06:03:26,669 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 06:03:26,669 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 06:03:26,669 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 06:03:26,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 06:03:26,669 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 06:03:26,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 06:03:26,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 06:03:26,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 06:03:26,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 06:03:26,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:03:26,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 06:03:26,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 06:03:26,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 06:03:26,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 06:03:26,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 06:03:26,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 06:03:26,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 06:03:26,672 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 06:03:26,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 06:03:26,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 06:03:26,672 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 06:03:26,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 06:03:26,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 06:03:26,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 06:03:26,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 06:03:26,883 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 06:03:26,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2023-12-16 06:03:27,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 06:03:28,084 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 06:03:28,085 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2023-12-16 06:03:28,091 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1d6dc77/25e4990732e3471bb79eb9e7fc26ee96/FLAG10bfb5116 [2023-12-16 06:03:28,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb1d6dc77/25e4990732e3471bb79eb9e7fc26ee96 [2023-12-16 06:03:28,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 06:03:28,103 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 06:03:28,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 06:03:28,106 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 06:03:28,109 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 06:03:28,109 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8ae624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28, skipping insertion in model container [2023-12-16 06:03:28,110 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,134 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 06:03:28,305 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/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c[9488,9501] [2023-12-16 06:03:28,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:03:28,324 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 06:03:28,367 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c[9488,9501] [2023-12-16 06:03:28,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 06:03:28,379 INFO L206 MainTranslator]: Completed translation [2023-12-16 06:03:28,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28 WrapperNode [2023-12-16 06:03:28,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 06:03:28,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 06:03:28,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 06:03:28,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 06:03:28,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,416 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 307 [2023-12-16 06:03:28,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 06:03:28,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 06:03:28,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 06:03:28,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 06:03:28,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,425 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,452 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]. [2023-12-16 06:03:28,452 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,452 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,462 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,463 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 06:03:28,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 06:03:28,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 06:03:28,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 06:03:28,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (1/1) ... [2023-12-16 06:03:28,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 06:03:28,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:03:28,511 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) [2023-12-16 06:03:28,513 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 [2023-12-16 06:03:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 06:03:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 06:03:28,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 06:03:28,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 06:03:28,593 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 06:03:28,594 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 06:03:28,896 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 06:03:28,930 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 06:03:28,931 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 06:03:28,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:03:28 BoogieIcfgContainer [2023-12-16 06:03:28,931 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 06:03:28,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 06:03:28,933 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 06:03:28,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 06:03:28,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:03:28" (1/3) ... [2023-12-16 06:03:28,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec0d11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:03:28, skipping insertion in model container [2023-12-16 06:03:28,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:03:28" (2/3) ... [2023-12-16 06:03:28,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec0d11e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:03:28, skipping insertion in model container [2023-12-16 06:03:28,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:03:28" (3/3) ... [2023-12-16 06:03:28,937 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2023-12-16 06:03:28,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 06:03:28,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 06:03:28,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 06:03:28,995 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;@d1dc922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 06:03:28,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 06:03:29,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 80 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 06:03:29,006 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:29,006 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] [2023-12-16 06:03:29,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:29,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:29,010 INFO L85 PathProgramCache]: Analyzing trace with hash -436537251, now seen corresponding path program 1 times [2023-12-16 06:03:29,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:29,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553380181] [2023-12-16 06:03:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:29,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:29,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553380181] [2023-12-16 06:03:29,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553380181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:29,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:29,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 06:03:29,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484915850] [2023-12-16 06:03:29,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:29,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 06:03:29,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:29,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 06:03:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:03:29,376 INFO L87 Difference]: Start difference. First operand has 81 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 80 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:29,411 INFO L93 Difference]: Finished difference Result 133 states and 227 transitions. [2023-12-16 06:03:29,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 06:03:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-16 06:03:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:29,420 INFO L225 Difference]: With dead ends: 133 [2023-12-16 06:03:29,420 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 06:03:29,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 06:03:29,425 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:29,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 06:03:29,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-16 06:03:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.7307692307692308) internal successors, (135), 78 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 135 transitions. [2023-12-16 06:03:29,461 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 135 transitions. Word has length 26 [2023-12-16 06:03:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:29,463 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 135 transitions. [2023-12-16 06:03:29,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 135 transitions. [2023-12-16 06:03:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 06:03:29,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:29,465 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] [2023-12-16 06:03:29,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 06:03:29,465 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:29,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2052991711, now seen corresponding path program 1 times [2023-12-16 06:03:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:29,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341328464] [2023-12-16 06:03:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:29,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:29,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:29,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341328464] [2023-12-16 06:03:29,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341328464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:29,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:29,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 06:03:29,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080757381] [2023-12-16 06:03:29,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:29,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 06:03:29,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:29,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 06:03:29,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:03:29,603 INFO L87 Difference]: Start difference. First operand 79 states and 135 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:29,661 INFO L93 Difference]: Finished difference Result 133 states and 221 transitions. [2023-12-16 06:03:29,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 06:03:29,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-16 06:03:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:29,662 INFO L225 Difference]: With dead ends: 133 [2023-12-16 06:03:29,662 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 06:03:29,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 06:03:29,664 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:29,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 369 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 06:03:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-12-16 06:03:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 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) [2023-12-16 06:03:29,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 111 transitions. [2023-12-16 06:03:29,668 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 111 transitions. Word has length 26 [2023-12-16 06:03:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:29,668 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 111 transitions. [2023-12-16 06:03:29,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2023-12-16 06:03:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 06:03:29,669 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:29,669 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] [2023-12-16 06:03:29,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 06:03:29,670 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:29,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash 794604760, now seen corresponding path program 1 times [2023-12-16 06:03:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:29,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12814000] [2023-12-16 06:03:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:29,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:29,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12814000] [2023-12-16 06:03:29,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12814000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:29,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:29,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760113272] [2023-12-16 06:03:29,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:29,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:29,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:29,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:29,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:29,836 INFO L87 Difference]: Start difference. First operand 79 states and 111 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:29,851 INFO L93 Difference]: Finished difference Result 173 states and 263 transitions. [2023-12-16 06:03:29,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:29,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-16 06:03:29,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:29,852 INFO L225 Difference]: With dead ends: 173 [2023-12-16 06:03:29,853 INFO L226 Difference]: Without dead ends: 122 [2023-12-16 06:03:29,853 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 [2023-12-16 06:03:29,854 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 59 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 209 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 [2023-12-16 06:03:29,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 209 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:29,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-12-16 06:03:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2023-12-16 06:03:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.495798319327731) internal successors, (178), 119 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 178 transitions. [2023-12-16 06:03:29,862 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 178 transitions. Word has length 49 [2023-12-16 06:03:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:29,862 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 178 transitions. [2023-12-16 06:03:29,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:29,862 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 178 transitions. [2023-12-16 06:03:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-16 06:03:29,863 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:29,863 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] [2023-12-16 06:03:29,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 06:03:29,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:29,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:29,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1181399799, now seen corresponding path program 1 times [2023-12-16 06:03:29,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:29,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923314318] [2023-12-16 06:03:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:29,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923314318] [2023-12-16 06:03:29,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923314318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:29,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:29,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:03:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228288312] [2023-12-16 06:03:29,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:29,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:03:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:03:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:03:29,974 INFO L87 Difference]: Start difference. First operand 120 states and 178 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:30,077 INFO L93 Difference]: Finished difference Result 580 states and 928 transitions. [2023-12-16 06:03:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:03:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2023-12-16 06:03:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:30,083 INFO L225 Difference]: With dead ends: 580 [2023-12-16 06:03:30,084 INFO L226 Difference]: Without dead ends: 488 [2023-12-16 06:03:30,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:03:30,092 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 653 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:30,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 590 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-16 06:03:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 210. [2023-12-16 06:03:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.5454545454545454) internal successors, (323), 209 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 323 transitions. [2023-12-16 06:03:30,128 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 323 transitions. Word has length 49 [2023-12-16 06:03:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:30,128 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 323 transitions. [2023-12-16 06:03:30,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 323 transitions. [2023-12-16 06:03:30,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 06:03:30,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:30,133 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] [2023-12-16 06:03:30,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 06:03:30,133 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:30,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:30,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2044342744, now seen corresponding path program 1 times [2023-12-16 06:03:30,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:30,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873408137] [2023-12-16 06:03:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:30,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:30,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873408137] [2023-12-16 06:03:30,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873408137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:30,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:30,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:03:30,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467932223] [2023-12-16 06:03:30,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:30,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:03:30,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:30,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:03:30,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:03:30,384 INFO L87 Difference]: Start difference. First operand 210 states and 323 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:30,434 INFO L93 Difference]: Finished difference Result 224 states and 340 transitions. [2023-12-16 06:03:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:03:30,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-16 06:03:30,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:30,437 INFO L225 Difference]: With dead ends: 224 [2023-12-16 06:03:30,437 INFO L226 Difference]: Without dead ends: 222 [2023-12-16 06:03:30,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:03:30,441 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 2 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:30,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 521 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:30,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-16 06:03:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 218. [2023-12-16 06:03:30,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 1.5253456221198156) internal successors, (331), 217 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 331 transitions. [2023-12-16 06:03:30,457 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 331 transitions. Word has length 50 [2023-12-16 06:03:30,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:30,457 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 331 transitions. [2023-12-16 06:03:30,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,457 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 331 transitions. [2023-12-16 06:03:30,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 06:03:30,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:30,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:30,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 06:03:30,458 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:30,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:30,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1050914879, now seen corresponding path program 1 times [2023-12-16 06:03:30,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:30,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181520234] [2023-12-16 06:03:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:30,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:30,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:30,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181520234] [2023-12-16 06:03:30,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181520234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:30,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:30,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:30,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055120232] [2023-12-16 06:03:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:30,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:30,531 INFO L87 Difference]: Start difference. First operand 218 states and 331 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:30,549 INFO L93 Difference]: Finished difference Result 570 states and 889 transitions. [2023-12-16 06:03:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:30,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-12-16 06:03:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:30,552 INFO L225 Difference]: With dead ends: 570 [2023-12-16 06:03:30,552 INFO L226 Difference]: Without dead ends: 380 [2023-12-16 06:03:30,554 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 [2023-12-16 06:03:30,555 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 51 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:30,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 182 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:30,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-16 06:03:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 374. [2023-12-16 06:03:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.5361930294906165) internal successors, (573), 373 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 573 transitions. [2023-12-16 06:03:30,573 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 573 transitions. Word has length 51 [2023-12-16 06:03:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:30,573 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 573 transitions. [2023-12-16 06:03:30,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 573 transitions. [2023-12-16 06:03:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 06:03:30,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:30,575 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] [2023-12-16 06:03:30,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 06:03:30,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:30,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:30,576 INFO L85 PathProgramCache]: Analyzing trace with hash 2005837455, now seen corresponding path program 1 times [2023-12-16 06:03:30,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:30,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386142156] [2023-12-16 06:03:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:30,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:30,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:30,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386142156] [2023-12-16 06:03:30,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386142156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:30,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:30,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:30,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562059936] [2023-12-16 06:03:30,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:30,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:30,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:30,629 INFO L87 Difference]: Start difference. First operand 374 states and 573 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:30,653 INFO L93 Difference]: Finished difference Result 1002 states and 1551 transitions. [2023-12-16 06:03:30,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:30,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 06:03:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:30,656 INFO L225 Difference]: With dead ends: 1002 [2023-12-16 06:03:30,656 INFO L226 Difference]: Without dead ends: 656 [2023-12-16 06:03:30,656 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 [2023-12-16 06:03:30,657 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 63 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 223 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 [2023-12-16 06:03:30,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 223 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:30,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-16 06:03:30,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 654. [2023-12-16 06:03:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.5267993874425727) internal successors, (997), 653 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 997 transitions. [2023-12-16 06:03:30,675 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 997 transitions. Word has length 52 [2023-12-16 06:03:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:30,675 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 997 transitions. [2023-12-16 06:03:30,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 997 transitions. [2023-12-16 06:03:30,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-16 06:03:30,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:30,676 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] [2023-12-16 06:03:30,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 06:03:30,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:30,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:30,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1823510447, now seen corresponding path program 1 times [2023-12-16 06:03:30,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:30,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271964506] [2023-12-16 06:03:30,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:30,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:30,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271964506] [2023-12-16 06:03:30,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271964506] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:30,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:30,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:30,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153649073] [2023-12-16 06:03:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:30,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:30,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:30,724 INFO L87 Difference]: Start difference. First operand 654 states and 997 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:30,750 INFO L93 Difference]: Finished difference Result 1778 states and 2711 transitions. [2023-12-16 06:03:30,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:30,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-16 06:03:30,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:30,755 INFO L225 Difference]: With dead ends: 1778 [2023-12-16 06:03:30,755 INFO L226 Difference]: Without dead ends: 1152 [2023-12-16 06:03:30,756 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 [2023-12-16 06:03:30,757 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 236 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 [2023-12-16 06:03:30,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 236 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:30,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1152 states. [2023-12-16 06:03:30,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1152 to 1150. [2023-12-16 06:03:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 1.5013054830287207) internal successors, (1725), 1149 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1725 transitions. [2023-12-16 06:03:30,781 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1725 transitions. Word has length 52 [2023-12-16 06:03:30,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:30,782 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1725 transitions. [2023-12-16 06:03:30,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1725 transitions. [2023-12-16 06:03:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-16 06:03:30,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:30,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:30,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 06:03:30,783 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:30,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:30,784 INFO L85 PathProgramCache]: Analyzing trace with hash 484386469, now seen corresponding path program 1 times [2023-12-16 06:03:30,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:30,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930543469] [2023-12-16 06:03:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:30,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:30,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:30,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930543469] [2023-12-16 06:03:30,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930543469] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:30,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:30,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198472467] [2023-12-16 06:03:30,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:30,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:30,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:30,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:30,841 INFO L87 Difference]: Start difference. First operand 1150 states and 1725 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:30,898 INFO L93 Difference]: Finished difference Result 2245 states and 3395 transitions. [2023-12-16 06:03:30,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:30,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-16 06:03:30,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:30,903 INFO L225 Difference]: With dead ends: 2245 [2023-12-16 06:03:30,904 INFO L226 Difference]: Without dead ends: 1618 [2023-12-16 06:03:30,904 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 [2023-12-16 06:03:30,905 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 68 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 245 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 [2023-12-16 06:03:30,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 245 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:30,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2023-12-16 06:03:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1616. [2023-12-16 06:03:30,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1615 states have (on average 1.4904024767801858) internal successors, (2407), 1615 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2407 transitions. [2023-12-16 06:03:30,937 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2407 transitions. Word has length 53 [2023-12-16 06:03:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:30,937 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2407 transitions. [2023-12-16 06:03:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:30,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2407 transitions. [2023-12-16 06:03:30,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:03:30,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:30,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:30,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 06:03:30,939 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:30,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:30,939 INFO L85 PathProgramCache]: Analyzing trace with hash -573145706, now seen corresponding path program 1 times [2023-12-16 06:03:30,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:30,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771853177] [2023-12-16 06:03:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:30,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:30,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 06:03:31,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:31,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771853177] [2023-12-16 06:03:31,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771853177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:31,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:31,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:03:31,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166360364] [2023-12-16 06:03:31,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:31,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:03:31,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:31,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:03:31,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:03:31,020 INFO L87 Difference]: Start difference. First operand 1616 states and 2407 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:31,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:31,128 INFO L93 Difference]: Finished difference Result 4554 states and 6888 transitions. [2023-12-16 06:03:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:03:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:03:31,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:31,138 INFO L225 Difference]: With dead ends: 4554 [2023-12-16 06:03:31,138 INFO L226 Difference]: Without dead ends: 3752 [2023-12-16 06:03:31,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:03:31,140 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 549 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:31,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 570 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:31,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2023-12-16 06:03:31,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 2400. [2023-12-16 06:03:31,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 2399 states have (on average 1.491871613172155) internal successors, (3579), 2399 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3579 transitions. [2023-12-16 06:03:31,268 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3579 transitions. Word has length 74 [2023-12-16 06:03:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:31,268 INFO L495 AbstractCegarLoop]: Abstraction has 2400 states and 3579 transitions. [2023-12-16 06:03:31,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:31,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3579 transitions. [2023-12-16 06:03:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:03:31,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:31,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:31,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 06:03:31,270 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:31,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:31,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1433669481, now seen corresponding path program 1 times [2023-12-16 06:03:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021978320] [2023-12-16 06:03:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-16 06:03:31,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:31,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021978320] [2023-12-16 06:03:31,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021978320] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:31,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:31,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:03:31,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466113278] [2023-12-16 06:03:31,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:03:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:03:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:03:31,436 INFO L87 Difference]: Start difference. First operand 2400 states and 3579 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:31,620 INFO L93 Difference]: Finished difference Result 5338 states and 8060 transitions. [2023-12-16 06:03:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:03:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:03:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:31,633 INFO L225 Difference]: With dead ends: 5338 [2023-12-16 06:03:31,633 INFO L226 Difference]: Without dead ends: 4536 [2023-12-16 06:03:31,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:03:31,637 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 491 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:31,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 632 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 06:03:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2023-12-16 06:03:31,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3184. [2023-12-16 06:03:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3183 states have (on average 1.4926170279610431) internal successors, (4751), 3183 states have internal predecessors, (4751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:31,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4751 transitions. [2023-12-16 06:03:31,766 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4751 transitions. Word has length 74 [2023-12-16 06:03:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:31,766 INFO L495 AbstractCegarLoop]: Abstraction has 3184 states and 4751 transitions. [2023-12-16 06:03:31,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4751 transitions. [2023-12-16 06:03:31,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 06:03:31,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:31,771 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:31,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 06:03:31,771 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:31,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1615996489, now seen corresponding path program 1 times [2023-12-16 06:03:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:31,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646114010] [2023-12-16 06:03:31,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:31,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:31,934 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 06:03:31,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:31,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646114010] [2023-12-16 06:03:31,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646114010] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:31,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:31,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:03:31,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649697382] [2023-12-16 06:03:31,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:31,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:03:31,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:03:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:03:31,935 INFO L87 Difference]: Start difference. First operand 3184 states and 4751 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:32,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:32,074 INFO L93 Difference]: Finished difference Result 6122 states and 9232 transitions. [2023-12-16 06:03:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:03:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-16 06:03:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:32,088 INFO L225 Difference]: With dead ends: 6122 [2023-12-16 06:03:32,088 INFO L226 Difference]: Without dead ends: 5320 [2023-12-16 06:03:32,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:03:32,091 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 531 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:32,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 626 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5320 states. [2023-12-16 06:03:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5320 to 3968. [2023-12-16 06:03:32,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 1.4930678094277792) internal successors, (5923), 3967 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5923 transitions. [2023-12-16 06:03:32,199 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5923 transitions. Word has length 74 [2023-12-16 06:03:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:32,200 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5923 transitions. [2023-12-16 06:03:32,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5923 transitions. [2023-12-16 06:03:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:03:32,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:32,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:32,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 06:03:32,202 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:32,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2003246849, now seen corresponding path program 1 times [2023-12-16 06:03:32,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:32,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157865395] [2023-12-16 06:03:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:32,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:32,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:32,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157865395] [2023-12-16 06:03:32,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157865395] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:32,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:32,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:32,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480030882] [2023-12-16 06:03:32,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:32,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:32,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:32,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:32,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:32,263 INFO L87 Difference]: Start difference. First operand 3968 states and 5923 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) [2023-12-16 06:03:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:32,369 INFO L93 Difference]: Finished difference Result 7908 states and 11817 transitions. [2023-12-16 06:03:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:32,369 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 [2023-12-16 06:03:32,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:32,379 INFO L225 Difference]: With dead ends: 7908 [2023-12-16 06:03:32,379 INFO L226 Difference]: Without dead ends: 3970 [2023-12-16 06:03:32,381 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 [2023-12-16 06:03:32,383 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 55 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:32,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 236 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2023-12-16 06:03:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3968. [2023-12-16 06:03:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 1.4779430299974792) internal successors, (5863), 3967 states have internal predecessors, (5863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5863 transitions. [2023-12-16 06:03:32,470 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5863 transitions. Word has length 75 [2023-12-16 06:03:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:32,471 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5863 transitions. [2023-12-16 06:03:32,471 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) [2023-12-16 06:03:32,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5863 transitions. [2023-12-16 06:03:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:03:32,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:32,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:32,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 06:03:32,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:32,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash 120108448, now seen corresponding path program 1 times [2023-12-16 06:03:32,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:32,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934004585] [2023-12-16 06:03:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:32,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:32,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:32,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934004585] [2023-12-16 06:03:32,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934004585] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:32,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:32,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:32,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454375896] [2023-12-16 06:03:32,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:32,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:32,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:32,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:32,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:32,528 INFO L87 Difference]: Start difference. First operand 3968 states and 5863 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) [2023-12-16 06:03:32,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:32,571 INFO L93 Difference]: Finished difference Result 5940 states and 8781 transitions. [2023-12-16 06:03:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:32,572 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 [2023-12-16 06:03:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:32,577 INFO L225 Difference]: With dead ends: 5940 [2023-12-16 06:03:32,577 INFO L226 Difference]: Without dead ends: 2002 [2023-12-16 06:03:32,580 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 [2023-12-16 06:03:32,581 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 49 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:32,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 217 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2023-12-16 06:03:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 2000. [2023-12-16 06:03:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1999 states have (on average 1.4592296148074038) internal successors, (2917), 1999 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 2917 transitions. [2023-12-16 06:03:32,675 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 2917 transitions. Word has length 75 [2023-12-16 06:03:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:32,675 INFO L495 AbstractCegarLoop]: Abstraction has 2000 states and 2917 transitions. [2023-12-16 06:03:32,676 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) [2023-12-16 06:03:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 2917 transitions. [2023-12-16 06:03:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 06:03:32,676 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:32,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:32,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 06:03:32,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:32,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:32,677 INFO L85 PathProgramCache]: Analyzing trace with hash 626393793, now seen corresponding path program 1 times [2023-12-16 06:03:32,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:32,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487072580] [2023-12-16 06:03:32,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:32,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:33,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:33,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487072580] [2023-12-16 06:03:33,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487072580] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:03:34,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47112905] [2023-12-16 06:03:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:34,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:03:34,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:03:34,002 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) [2023-12-16 06:03:34,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 06:03:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:34,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 06:03:34,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:03:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:03:34,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:03:34,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:03:34,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47112905] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:03:34,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:03:34,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-16 06:03:34,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061989151] [2023-12-16 06:03:34,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:03:34,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 06:03:34,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 06:03:34,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-16 06:03:34,388 INFO L87 Difference]: Start difference. First operand 2000 states and 2917 transitions. Second operand has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:37,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:37,759 INFO L93 Difference]: Finished difference Result 18122 states and 25986 transitions. [2023-12-16 06:03:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-16 06:03:37,760 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 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 [2023-12-16 06:03:37,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:37,794 INFO L225 Difference]: With dead ends: 18122 [2023-12-16 06:03:37,794 INFO L226 Difference]: Without dead ends: 16760 [2023-12-16 06:03:37,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1856 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=965, Invalid=4585, Unknown=0, NotChecked=0, Total=5550 [2023-12-16 06:03:37,802 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 3662 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:37,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 1271 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-16 06:03:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16760 states. [2023-12-16 06:03:38,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16760 to 13244. [2023-12-16 06:03:38,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13244 states, 13243 states have (on average 1.4253567922676131) internal successors, (18876), 13243 states have internal predecessors, (18876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13244 states to 13244 states and 18876 transitions. [2023-12-16 06:03:38,325 INFO L78 Accepts]: Start accepts. Automaton has 13244 states and 18876 transitions. Word has length 75 [2023-12-16 06:03:38,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:38,325 INFO L495 AbstractCegarLoop]: Abstraction has 13244 states and 18876 transitions. [2023-12-16 06:03:38,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.375) internal successors, (214), 16 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:38,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13244 states and 18876 transitions. [2023-12-16 06:03:38,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-16 06:03:38,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:38,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:38,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 06:03:38,533 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,SelfDestructingSolverStorable14 [2023-12-16 06:03:38,533 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:38,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2112085428, now seen corresponding path program 1 times [2023-12-16 06:03:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:38,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278964478] [2023-12-16 06:03:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-16 06:03:38,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:38,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278964478] [2023-12-16 06:03:38,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278964478] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:38,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:38,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 06:03:38,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230407416] [2023-12-16 06:03:38,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:38,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 06:03:38,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 06:03:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 06:03:38,615 INFO L87 Difference]: Start difference. First operand 13244 states and 18876 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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) [2023-12-16 06:03:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:38,915 INFO L93 Difference]: Finished difference Result 22834 states and 32786 transitions. [2023-12-16 06:03:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 06:03:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 76 [2023-12-16 06:03:38,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:38,948 INFO L225 Difference]: With dead ends: 22834 [2023-12-16 06:03:38,948 INFO L226 Difference]: Without dead ends: 20648 [2023-12-16 06:03:38,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-16 06:03:38,957 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 454 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:38,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 627 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:38,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20648 states. [2023-12-16 06:03:39,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20648 to 15512. [2023-12-16 06:03:39,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15512 states, 15511 states have (on average 1.4241506027980144) internal successors, (22090), 15511 states have internal predecessors, (22090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:39,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15512 states to 15512 states and 22090 transitions. [2023-12-16 06:03:39,426 INFO L78 Accepts]: Start accepts. Automaton has 15512 states and 22090 transitions. Word has length 76 [2023-12-16 06:03:39,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:39,426 INFO L495 AbstractCegarLoop]: Abstraction has 15512 states and 22090 transitions. [2023-12-16 06:03:39,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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) [2023-12-16 06:03:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 15512 states and 22090 transitions. [2023-12-16 06:03:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 06:03:39,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:39,428 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] [2023-12-16 06:03:39,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 06:03:39,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:39,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:39,428 INFO L85 PathProgramCache]: Analyzing trace with hash 80183665, now seen corresponding path program 1 times [2023-12-16 06:03:39,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:39,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156753850] [2023-12-16 06:03:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:39,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:39,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:39,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:39,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156753850] [2023-12-16 06:03:39,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156753850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:39,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:39,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:39,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596147926] [2023-12-16 06:03:39,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:39,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:39,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:39,486 INFO L87 Difference]: Start difference. First operand 15512 states and 22090 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2023-12-16 06:03:39,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:39,684 INFO L93 Difference]: Finished difference Result 22752 states and 32272 transitions. [2023-12-16 06:03:39,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:39,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 [2023-12-16 06:03:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:39,694 INFO L225 Difference]: With dead ends: 22752 [2023-12-16 06:03:39,694 INFO L226 Difference]: Without dead ends: 7270 [2023-12-16 06:03:39,703 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 [2023-12-16 06:03:39,704 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 37 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:39,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 204 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:39,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7270 states. [2023-12-16 06:03:39,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7270 to 7268. [2023-12-16 06:03:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7268 states, 7267 states have (on average 1.3853034264483282) internal successors, (10067), 7267 states have internal predecessors, (10067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:39,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 10067 transitions. [2023-12-16 06:03:39,846 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 10067 transitions. Word has length 77 [2023-12-16 06:03:39,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:39,847 INFO L495 AbstractCegarLoop]: Abstraction has 7268 states and 10067 transitions. [2023-12-16 06:03:39,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2023-12-16 06:03:39,847 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 10067 transitions. [2023-12-16 06:03:39,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 06:03:39,848 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:39,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:39,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 06:03:39,848 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:39,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:39,848 INFO L85 PathProgramCache]: Analyzing trace with hash 464528149, now seen corresponding path program 1 times [2023-12-16 06:03:39,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:39,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948463089] [2023-12-16 06:03:39,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:39,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:41,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:41,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948463089] [2023-12-16 06:03:41,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948463089] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:03:41,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394500433] [2023-12-16 06:03:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:41,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:03:41,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:03:41,840 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) [2023-12-16 06:03:41,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 06:03:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:41,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 06:03:41,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:03:42,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:42,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:03:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:44,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394500433] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:03:44,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:03:44,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-12-16 06:03:44,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137776952] [2023-12-16 06:03:44,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:03:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 06:03:44,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:44,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 06:03:44,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2023-12-16 06:03:44,056 INFO L87 Difference]: Start difference. First operand 7268 states and 10067 transitions. Second operand has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:45,228 INFO L93 Difference]: Finished difference Result 29885 states and 40879 transitions. [2023-12-16 06:03:45,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 06:03:45,228 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-16 06:03:45,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:45,261 INFO L225 Difference]: With dead ends: 29885 [2023-12-16 06:03:45,261 INFO L226 Difference]: Without dead ends: 22664 [2023-12-16 06:03:45,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 06:03:45,276 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1648 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1648 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:45,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1648 Valid, 852 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 06:03:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22664 states. [2023-12-16 06:03:45,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22664 to 16791. [2023-12-16 06:03:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16791 states, 16790 states have (on average 1.3699225729600952) internal successors, (23001), 16790 states have internal predecessors, (23001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16791 states to 16791 states and 23001 transitions. [2023-12-16 06:03:45,752 INFO L78 Accepts]: Start accepts. Automaton has 16791 states and 23001 transitions. Word has length 79 [2023-12-16 06:03:45,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:45,753 INFO L495 AbstractCegarLoop]: Abstraction has 16791 states and 23001 transitions. [2023-12-16 06:03:45,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.366666666666666) internal successors, (221), 29 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 16791 states and 23001 transitions. [2023-12-16 06:03:45,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 06:03:45,754 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:45,754 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] [2023-12-16 06:03:45,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 06:03:45,959 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,SelfDestructingSolverStorable17 [2023-12-16 06:03:45,959 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:45,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:45,960 INFO L85 PathProgramCache]: Analyzing trace with hash 851323188, now seen corresponding path program 1 times [2023-12-16 06:03:45,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:45,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687561376] [2023-12-16 06:03:45,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:45,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:46,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:46,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:46,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687561376] [2023-12-16 06:03:46,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687561376] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:46,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:46,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:46,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699272747] [2023-12-16 06:03:46,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:46,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:46,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:46,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:46,077 INFO L87 Difference]: Start difference. First operand 16791 states and 23001 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) [2023-12-16 06:03:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:46,230 INFO L93 Difference]: Finished difference Result 25099 states and 34339 transitions. [2023-12-16 06:03:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:03:46,231 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 [2023-12-16 06:03:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:46,244 INFO L225 Difference]: With dead ends: 25099 [2023-12-16 06:03:46,244 INFO L226 Difference]: Without dead ends: 9714 [2023-12-16 06:03:46,256 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 [2023-12-16 06:03:46,257 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:46,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 179 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:03:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2023-12-16 06:03:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 9712. [2023-12-16 06:03:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 9711 states have (on average 1.341674389867161) internal successors, (13029), 9711 states have internal predecessors, (13029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 13029 transitions. [2023-12-16 06:03:46,440 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 13029 transitions. Word has length 79 [2023-12-16 06:03:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:46,441 INFO L495 AbstractCegarLoop]: Abstraction has 9712 states and 13029 transitions. [2023-12-16 06:03:46,441 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) [2023-12-16 06:03:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 13029 transitions. [2023-12-16 06:03:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 06:03:46,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:46,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:46,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 06:03:46,442 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:46,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash -159971565, now seen corresponding path program 1 times [2023-12-16 06:03:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221347701] [2023-12-16 06:03:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:47,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:47,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221347701] [2023-12-16 06:03:47,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221347701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:03:47,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645561182] [2023-12-16 06:03:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:47,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:03:47,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:03:47,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:03:47,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 06:03:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:47,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 06:03:47,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 06:03:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:48,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 06:03:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:48,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645561182] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 06:03:48,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 06:03:48,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-16 06:03:48,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368408053] [2023-12-16 06:03:48,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 06:03:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 06:03:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 06:03:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2023-12-16 06:03:48,861 INFO L87 Difference]: Start difference. First operand 9712 states and 13029 transitions. Second operand has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:03:56,840 INFO L93 Difference]: Finished difference Result 86480 states and 114861 transitions. [2023-12-16 06:03:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-12-16 06:03:56,840 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 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 [2023-12-16 06:03:56,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:03:57,013 INFO L225 Difference]: With dead ends: 86480 [2023-12-16 06:03:57,013 INFO L226 Difference]: Without dead ends: 76800 [2023-12-16 06:03:57,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6766 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2860, Invalid=16322, Unknown=0, NotChecked=0, Total=19182 [2023-12-16 06:03:57,032 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 3680 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:03:57,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 1735 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1423 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-16 06:03:57,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76800 states. [2023-12-16 06:03:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76800 to 53523. [2023-12-16 06:03:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53523 states, 53522 states have (on average 1.3385897387989985) internal successors, (71644), 53522 states have internal predecessors, (71644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53523 states to 53523 states and 71644 transitions. [2023-12-16 06:03:58,528 INFO L78 Accepts]: Start accepts. Automaton has 53523 states and 71644 transitions. Word has length 79 [2023-12-16 06:03:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:03:58,529 INFO L495 AbstractCegarLoop]: Abstraction has 53523 states and 71644 transitions. [2023-12-16 06:03:58,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.46875) internal successors, (207), 31 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:03:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 53523 states and 71644 transitions. [2023-12-16 06:03:58,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:03:58,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:03:58,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:03:58,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 06:03:58,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:03:58,738 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:03:58,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:03:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1808943462, now seen corresponding path program 1 times [2023-12-16 06:03:58,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:03:58,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668263541] [2023-12-16 06:03:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:03:58,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:03:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:03:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:03:58,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:03:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668263541] [2023-12-16 06:03:58,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668263541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:03:58,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:03:58,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:03:58,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13431634] [2023-12-16 06:03:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:03:58,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:03:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:03:58,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:03:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:03:58,967 INFO L87 Difference]: Start difference. First operand 53523 states and 71644 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) [2023-12-16 06:04:00,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:00,314 INFO L93 Difference]: Finished difference Result 113782 states and 152375 transitions. [2023-12-16 06:04:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:00,315 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 [2023-12-16 06:04:00,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:00,496 INFO L225 Difference]: With dead ends: 113782 [2023-12-16 06:04:00,496 INFO L226 Difference]: Without dead ends: 63772 [2023-12-16 06:04:00,533 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 [2023-12-16 06:04:00,534 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 54 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:00,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 209 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63772 states. [2023-12-16 06:04:02,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63772 to 63770. [2023-12-16 06:04:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63770 states, 63769 states have (on average 1.3251579921278365) internal successors, (84504), 63769 states have internal predecessors, (84504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63770 states to 63770 states and 84504 transitions. [2023-12-16 06:04:02,622 INFO L78 Accepts]: Start accepts. Automaton has 63770 states and 84504 transitions. Word has length 80 [2023-12-16 06:04:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:02,622 INFO L495 AbstractCegarLoop]: Abstraction has 63770 states and 84504 transitions. [2023-12-16 06:04:02,622 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) [2023-12-16 06:04:02,622 INFO L276 IsEmpty]: Start isEmpty. Operand 63770 states and 84504 transitions. [2023-12-16 06:04:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:04:02,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:02,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:02,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-16 06:04:02,625 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:02,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:02,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2142364890, now seen corresponding path program 1 times [2023-12-16 06:04:02,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:02,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367624219] [2023-12-16 06:04:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:02,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:02,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:02,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367624219] [2023-12-16 06:04:02,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367624219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:02,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:02,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:02,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625898609] [2023-12-16 06:04:02,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:02,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:02,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:02,664 INFO L87 Difference]: Start difference. First operand 63770 states and 84504 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) [2023-12-16 06:04:05,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:05,067 INFO L93 Difference]: Finished difference Result 173848 states and 228950 transitions. [2023-12-16 06:04:05,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:05,069 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 [2023-12-16 06:04:05,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:05,268 INFO L225 Difference]: With dead ends: 173848 [2023-12-16 06:04:05,268 INFO L226 Difference]: Without dead ends: 112502 [2023-12-16 06:04:05,439 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 [2023-12-16 06:04:05,440 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 48 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:05,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 227 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:05,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112502 states. [2023-12-16 06:04:08,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112502 to 112500. [2023-12-16 06:04:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112500 states, 112499 states have (on average 1.295309291638148) internal successors, (145721), 112499 states have internal predecessors, (145721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112500 states to 112500 states and 145721 transitions. [2023-12-16 06:04:08,732 INFO L78 Accepts]: Start accepts. Automaton has 112500 states and 145721 transitions. Word has length 80 [2023-12-16 06:04:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:08,732 INFO L495 AbstractCegarLoop]: Abstraction has 112500 states and 145721 transitions. [2023-12-16 06:04:08,732 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) [2023-12-16 06:04:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 112500 states and 145721 transitions. [2023-12-16 06:04:08,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:04:08,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:08,744 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:08,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 06:04:08,744 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:08,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:08,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1813865286, now seen corresponding path program 1 times [2023-12-16 06:04:08,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:08,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121826736] [2023-12-16 06:04:08,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:08,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:09,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:09,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121826736] [2023-12-16 06:04:09,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121826736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:09,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:09,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:09,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58086190] [2023-12-16 06:04:09,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:09,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:09,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:09,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:09,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:09,021 INFO L87 Difference]: Start difference. First operand 112500 states and 145721 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) [2023-12-16 06:04:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:12,975 INFO L93 Difference]: Finished difference Result 282174 states and 363564 transitions. [2023-12-16 06:04:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:12,975 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 [2023-12-16 06:04:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:13,255 INFO L225 Difference]: With dead ends: 282174 [2023-12-16 06:04:13,255 INFO L226 Difference]: Without dead ends: 172466 [2023-12-16 06:04:13,319 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 [2023-12-16 06:04:13,319 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:13,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 226 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172466 states. [2023-12-16 06:04:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172466 to 172464. [2023-12-16 06:04:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172464 states, 172463 states have (on average 1.264300168731844) internal successors, (218045), 172463 states have internal predecessors, (218045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:19,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172464 states to 172464 states and 218045 transitions. [2023-12-16 06:04:19,735 INFO L78 Accepts]: Start accepts. Automaton has 172464 states and 218045 transitions. Word has length 80 [2023-12-16 06:04:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:19,735 INFO L495 AbstractCegarLoop]: Abstraction has 172464 states and 218045 transitions. [2023-12-16 06:04:19,735 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) [2023-12-16 06:04:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 172464 states and 218045 transitions. [2023-12-16 06:04:19,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:04:19,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:19,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:19,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 06:04:19,763 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:19,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:19,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1524817978, now seen corresponding path program 1 times [2023-12-16 06:04:19,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:19,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461374087] [2023-12-16 06:04:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:19,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:19,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:19,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461374087] [2023-12-16 06:04:19,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461374087] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 06:04:19,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 06:04:19,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 06:04:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024615738] [2023-12-16 06:04:19,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 06:04:19,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 06:04:19,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 06:04:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 06:04:19,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 06:04:19,797 INFO L87 Difference]: Start difference. First operand 172464 states and 218045 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) [2023-12-16 06:04:25,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 06:04:25,290 INFO L93 Difference]: Finished difference Result 372565 states and 469034 transitions. [2023-12-16 06:04:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 06:04:25,290 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 [2023-12-16 06:04:25,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 06:04:25,821 INFO L225 Difference]: With dead ends: 372565 [2023-12-16 06:04:25,821 INFO L226 Difference]: Without dead ends: 217118 [2023-12-16 06:04:25,948 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 [2023-12-16 06:04:25,955 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 51 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 06:04:25,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 227 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 06:04:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217118 states. [2023-12-16 06:04:32,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217118 to 217116. [2023-12-16 06:04:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217116 states, 217115 states have (on average 1.2374041406627825) internal successors, (268659), 217115 states have internal predecessors, (268659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 06:04:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217116 states to 217116 states and 268659 transitions. [2023-12-16 06:04:32,922 INFO L78 Accepts]: Start accepts. Automaton has 217116 states and 268659 transitions. Word has length 80 [2023-12-16 06:04:32,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 06:04:32,923 INFO L495 AbstractCegarLoop]: Abstraction has 217116 states and 268659 transitions. [2023-12-16 06:04:32,923 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) [2023-12-16 06:04:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 217116 states and 268659 transitions. [2023-12-16 06:04:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-16 06:04:32,961 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 06:04:32,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:32,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-16 06:04:32,963 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 06:04:32,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 06:04:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1026117690, now seen corresponding path program 1 times [2023-12-16 06:04:32,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 06:04:32,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573265780] [2023-12-16 06:04:32,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:32,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 06:04:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 06:04:33,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 06:04:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573265780] [2023-12-16 06:04:33,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573265780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 06:04:33,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479031302] [2023-12-16 06:04:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 06:04:33,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:04:33,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 06:04:33,186 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 06:04:33,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 06:04:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 06:04:33,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 06:04:33,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-12-16 06:04:33,458 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 06:04:33,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 06:04:33,466 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 [2023-12-16 06:04:33,490 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 06:04:33,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 06:04:33,664 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 81 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. [2023-12-16 06:04:33,668 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 06:04:33,673 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 06:04:33,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:04:33 BoogieIcfgContainer [2023-12-16 06:04:33,675 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 06:04:33,676 INFO L158 Benchmark]: Toolchain (without parser) took 65572.57ms. Allocated memory was 192.9MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 131.7MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-16 06:04:33,676 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 06:04:33,676 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.95ms. Allocated memory is still 192.9MB. Free memory was 131.7MB in the beginning and 116.4MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 06:04:33,677 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.30ms. Allocated memory is still 192.9MB. Free memory was 116.4MB in the beginning and 113.6MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:04:33,677 INFO L158 Benchmark]: Boogie Preprocessor took 47.93ms. Allocated memory is still 192.9MB. Free memory was 113.6MB in the beginning and 110.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 06:04:33,677 INFO L158 Benchmark]: RCFGBuilder took 465.51ms. Allocated memory was 192.9MB in the beginning and 231.7MB in the end (delta: 38.8MB). Free memory was 110.4MB in the beginning and 174.8MB in the end (delta: -64.4MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2023-12-16 06:04:33,677 INFO L158 Benchmark]: TraceAbstraction took 64742.59ms. Allocated memory was 231.7MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 173.8MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-16 06:04:33,682 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 192.9MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 274.95ms. Allocated memory is still 192.9MB. Free memory was 131.7MB in the beginning and 116.4MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.30ms. Allocated memory is still 192.9MB. Free memory was 116.4MB in the beginning and 113.6MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.93ms. Allocated memory is still 192.9MB. Free memory was 113.6MB in the beginning and 110.4MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 465.51ms. Allocated memory was 192.9MB in the beginning and 231.7MB in the end (delta: 38.8MB). Free memory was 110.4MB in the beginning and 174.8MB in the end (delta: -64.4MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * TraceAbstraction took 64742.59ms. Allocated memory was 231.7MB in the beginning and 7.8GB in the end (delta: 7.6GB). Free memory was 173.8MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 2.2GB. 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: 394]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 394). Cancelled while NwaCegarLoop was analyzing trace of length 81 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-4-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 64.7s, OverallIterations: 25, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12354 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12354 mSDsluCounter, 10745 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7473 mSDsCounter, 312 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3835 IncrementalHoareTripleChecker+Invalid, 4147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 312 mSolverCounterUnsat, 3272 mSDtfsCounter, 3835 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 777 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 313 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9172 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217116occurred in iteration=24, InterpolantAutomatonStates: 285, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 22.8s AutomataMinimizationTime, 24 MinimizatonAttempts, 42170 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 1798 NumberOfCodeBlocks, 1798 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2001 ConstructedInterpolants, 0 QuantifiedInterpolants, 16487 SizeOfPredicates, 13 NumberOfNonLiveVariables, 886 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 30 InterpolantComputations, 21 PerfectInterpolantSequences, 219/281 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