/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.6.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 11:55:20,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:55:20,935 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:55:20,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:55:20,940 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:55:20,963 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:55:20,963 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:55:20,963 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:55:20,964 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:55:20,967 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:55:20,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:55:20,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:55:20,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:55:20,969 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:55:20,969 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:55:20,970 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:55:20,970 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:55:20,970 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:55:20,970 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:55:20,971 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:55:20,971 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:55:20,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:55:20,972 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:55:20,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:55:20,972 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:55:20,972 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:55:20,972 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:55:20,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:55:20,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:55:20,973 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:55:20,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:55:20,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:55:20,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:55:20,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:55:20,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:55:20,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:55:20,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:55:20,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:55:20,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:55:20,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:55:20,975 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:55:20,975 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:55:20,975 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:55:20,976 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:55:21,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:55:21,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:55:21,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:55:21,176 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:55:21,176 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:55:21,177 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:55:22,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:55:22,474 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:55:22,475 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.6.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:55:22,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b3b7adc/a05c77a0a58a45eda137eafe438f55ed/FLAG4214d56c2 [2023-12-21 11:55:22,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20b3b7adc/a05c77a0a58a45eda137eafe438f55ed [2023-12-21 11:55:22,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:55:22,503 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:55:22,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:55:22,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:55:22,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:55:22,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717a5c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22, skipping insertion in model container [2023-12-21 11:55:22,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,545 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:55:22,735 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.6.1.ufo.UNBOUNDED.pals.c[15140,15153] [2023-12-21 11:55:22,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:55:22,758 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:55:22,793 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.6.1.ufo.UNBOUNDED.pals.c[15140,15153] [2023-12-21 11:55:22,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:55:22,811 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:55:22,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22 WrapperNode [2023-12-21 11:55:22,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:55:22,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:55:22,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:55:22,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:55:22,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,860 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 391 [2023-12-21 11:55:22,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:55:22,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:55:22,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:55:22,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:55:22,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,893 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]. [2023-12-21 11:55:22,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:55:22,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:55:22,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:55:22,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:55:22,909 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (1/1) ... [2023-12-21 11:55:22,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:55:22,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:55:22,969 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) [2023-12-21 11:55:23,000 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 [2023-12-21 11:55:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:55:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:55:23,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:55:23,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:55:23,124 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:55:23,126 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:55:23,501 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:55:23,523 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:55:23,523 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:55:23,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:55:23 BoogieIcfgContainer [2023-12-21 11:55:23,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:55:23,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:55:23,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:55:23,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:55:23,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:55:22" (1/3) ... [2023-12-21 11:55:23,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9c03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:55:23, skipping insertion in model container [2023-12-21 11:55:23,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:55:22" (2/3) ... [2023-12-21 11:55:23,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b9c03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:55:23, skipping insertion in model container [2023-12-21 11:55:23,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:55:23" (3/3) ... [2023-12-21 11:55:23,529 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c [2023-12-21 11:55:23,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:55:23,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:55:23,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:55:23,579 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;@77da1d32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:55:23,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:55:23,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.8064516129032258) internal successors, (168), 94 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 11:55:23,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:23,587 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] [2023-12-21 11:55:23,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:23,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1995138295, now seen corresponding path program 1 times [2023-12-21 11:55:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601007211] [2023-12-21 11:55:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:23,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:23,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:23,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601007211] [2023-12-21 11:55:23,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601007211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:23,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:23,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:55:23,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574007652] [2023-12-21 11:55:23,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:23,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:55:23,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:23,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:55:23,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:55:23,798 INFO L87 Difference]: Start difference. First operand has 95 states, 93 states have (on average 1.8064516129032258) internal successors, (168), 94 states have internal predecessors, (168), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:23,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:23,827 INFO L93 Difference]: Finished difference Result 145 states and 251 transitions. [2023-12-21 11:55:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:55:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-21 11:55:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:23,836 INFO L225 Difference]: With dead ends: 145 [2023-12-21 11:55:23,836 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 11:55:23,838 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 [2023-12-21 11:55:23,841 INFO L413 NwaCegarLoop]: 160 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, 160 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 [2023-12-21 11:55:23,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 160 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 11:55:23,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-21 11:55:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.7717391304347827) internal successors, (163), 92 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 163 transitions. [2023-12-21 11:55:23,875 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 163 transitions. Word has length 22 [2023-12-21 11:55:23,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:23,875 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 163 transitions. [2023-12-21 11:55:23,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:23,876 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 163 transitions. [2023-12-21 11:55:23,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-21 11:55:23,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:23,878 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] [2023-12-21 11:55:23,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:55:23,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:23,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 610885259, now seen corresponding path program 1 times [2023-12-21 11:55:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:23,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015060904] [2023-12-21 11:55:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015060904] [2023-12-21 11:55:24,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015060904] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:24,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:24,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:55:24,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291342786] [2023-12-21 11:55:24,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:24,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:55:24,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:24,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:55:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:55:24,063 INFO L87 Difference]: Start difference. First operand 93 states and 163 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:24,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:24,142 INFO L93 Difference]: Finished difference Result 145 states and 245 transitions. [2023-12-21 11:55:24,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:55:24,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-21 11:55:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:24,143 INFO L225 Difference]: With dead ends: 145 [2023-12-21 11:55:24,143 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 11:55:24,143 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 [2023-12-21 11:55:24,144 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 0 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:24,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 437 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 11:55:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-12-21 11:55:24,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 92 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 123 transitions. [2023-12-21 11:55:24,149 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 123 transitions. Word has length 22 [2023-12-21 11:55:24,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:24,149 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 123 transitions. [2023-12-21 11:55:24,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:24,149 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 123 transitions. [2023-12-21 11:55:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:55:24,150 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:24,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:24,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:55:24,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:24,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:24,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1005779790, now seen corresponding path program 1 times [2023-12-21 11:55:24,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:24,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087390746] [2023-12-21 11:55:24,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:24,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:24,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:24,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087390746] [2023-12-21 11:55:24,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087390746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:24,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:24,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:55:24,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371697601] [2023-12-21 11:55:24,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:24,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:55:24,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:24,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:55:24,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:55:24,296 INFO L87 Difference]: Start difference. First operand 93 states and 123 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2023-12-21 11:55:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:24,567 INFO L93 Difference]: Finished difference Result 681 states and 1071 transitions. [2023-12-21 11:55:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 11:55:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-21 11:55:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:24,570 INFO L225 Difference]: With dead ends: 681 [2023-12-21 11:55:24,570 INFO L226 Difference]: Without dead ends: 632 [2023-12-21 11:55:24,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:55:24,572 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1142 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:24,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1849 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2023-12-21 11:55:24,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 140. [2023-12-21 11:55:24,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4316546762589928) internal successors, (199), 139 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:24,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 199 transitions. [2023-12-21 11:55:24,582 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 199 transitions. Word has length 61 [2023-12-21 11:55:24,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:24,583 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 199 transitions. [2023-12-21 11:55:24,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 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) [2023-12-21 11:55:24,583 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 199 transitions. [2023-12-21 11:55:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 11:55:24,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:24,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:24,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:55:24,584 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:24,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:24,585 INFO L85 PathProgramCache]: Analyzing trace with hash -571741034, now seen corresponding path program 1 times [2023-12-21 11:55:24,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:24,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382262986] [2023-12-21 11:55:24,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:24,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:24,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382262986] [2023-12-21 11:55:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382262986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:24,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:55:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603284353] [2023-12-21 11:55:24,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:24,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:55:24,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:55:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:55:24,867 INFO L87 Difference]: Start difference. First operand 140 states and 199 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,071 INFO L93 Difference]: Finished difference Result 238 states and 355 transitions. [2023-12-21 11:55:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:55:25,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 11:55:25,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,072 INFO L225 Difference]: With dead ends: 238 [2023-12-21 11:55:25,072 INFO L226 Difference]: Without dead ends: 142 [2023-12-21 11:55:25,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:55:25,073 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 370 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 485 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-21 11:55:25,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-12-21 11:55:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4244604316546763) internal successors, (198), 139 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 198 transitions. [2023-12-21 11:55:25,078 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 198 transitions. Word has length 63 [2023-12-21 11:55:25,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:25,078 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 198 transitions. [2023-12-21 11:55:25,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 198 transitions. [2023-12-21 11:55:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 11:55:25,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:25,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:25,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:55:25,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:25,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash -573885986, now seen corresponding path program 1 times [2023-12-21 11:55:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:25,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906082855] [2023-12-21 11:55:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:25,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:25,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906082855] [2023-12-21 11:55:25,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906082855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:25,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:25,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:25,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871502677] [2023-12-21 11:55:25,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:25,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:25,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:25,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:25,129 INFO L87 Difference]: Start difference. First operand 140 states and 198 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,146 INFO L93 Difference]: Finished difference Result 321 states and 487 transitions. [2023-12-21 11:55:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:25,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-21 11:55:25,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,148 INFO L225 Difference]: With dead ends: 321 [2023-12-21 11:55:25,148 INFO L226 Difference]: Without dead ends: 225 [2023-12-21 11:55:25,148 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 [2023-12-21 11:55:25,149 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 52 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 187 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-21 11:55:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 221. [2023-12-21 11:55:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4772727272727273) internal successors, (325), 220 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2023-12-21 11:55:25,155 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 63 [2023-12-21 11:55:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:25,155 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2023-12-21 11:55:25,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2023-12-21 11:55:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 11:55:25,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:25,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:25,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:55:25,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:25,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash -558175355, now seen corresponding path program 1 times [2023-12-21 11:55:25,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:25,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171794500] [2023-12-21 11:55:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:25,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:25,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171794500] [2023-12-21 11:55:25,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171794500] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:25,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:25,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:55:25,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45564099] [2023-12-21 11:55:25,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:25,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:55:25,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:25,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:55:25,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:55:25,293 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,310 INFO L93 Difference]: Finished difference Result 229 states and 334 transitions. [2023-12-21 11:55:25,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:55:25,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-21 11:55:25,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,311 INFO L225 Difference]: With dead ends: 229 [2023-12-21 11:55:25,311 INFO L226 Difference]: Without dead ends: 227 [2023-12-21 11:55:25,311 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 [2023-12-21 11:55:25,312 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 349 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-21 11:55:25,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2023-12-21 11:55:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4642857142857142) internal successors, (328), 224 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 328 transitions. [2023-12-21 11:55:25,318 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 328 transitions. Word has length 64 [2023-12-21 11:55:25,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:25,318 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 328 transitions. [2023-12-21 11:55:25,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 328 transitions. [2023-12-21 11:55:25,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 11:55:25,319 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:25,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:25,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:55:25,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:25,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1082045802, now seen corresponding path program 1 times [2023-12-21 11:55:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:25,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296483156] [2023-12-21 11:55:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:25,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:25,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296483156] [2023-12-21 11:55:25,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296483156] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:25,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:25,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381949614] [2023-12-21 11:55:25,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:25,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:25,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:25,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:25,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:25,377 INFO L87 Difference]: Start difference. First operand 225 states and 328 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,395 INFO L93 Difference]: Finished difference Result 571 states and 868 transitions. [2023-12-21 11:55:25,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:25,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 11:55:25,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,397 INFO L225 Difference]: With dead ends: 571 [2023-12-21 11:55:25,397 INFO L226 Difference]: Without dead ends: 390 [2023-12-21 11:55:25,399 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 [2023-12-21 11:55:25,401 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 258 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-21 11:55:25,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 388. [2023-12-21 11:55:25,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.496124031007752) internal successors, (579), 387 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 579 transitions. [2023-12-21 11:55:25,411 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 579 transitions. Word has length 65 [2023-12-21 11:55:25,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:25,412 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 579 transitions. [2023-12-21 11:55:25,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 579 transitions. [2023-12-21 11:55:25,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 11:55:25,415 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:25,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:25,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:55:25,416 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:25,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:25,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1350628970, now seen corresponding path program 1 times [2023-12-21 11:55:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242921871] [2023-12-21 11:55:25,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:25,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:25,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:25,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242921871] [2023-12-21 11:55:25,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242921871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:25,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:25,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:25,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623512385] [2023-12-21 11:55:25,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:25,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:25,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:25,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:25,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:25,469 INFO L87 Difference]: Start difference. First operand 388 states and 579 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,487 INFO L93 Difference]: Finished difference Result 1044 states and 1593 transitions. [2023-12-21 11:55:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:25,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 11:55:25,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,489 INFO L225 Difference]: With dead ends: 1044 [2023-12-21 11:55:25,489 INFO L226 Difference]: Without dead ends: 700 [2023-12-21 11:55:25,489 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 [2023-12-21 11:55:25,490 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 65 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 260 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:25,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-12-21 11:55:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 698. [2023-12-21 11:55:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.5050215208034434) internal successors, (1049), 697 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1049 transitions. [2023-12-21 11:55:25,503 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1049 transitions. Word has length 65 [2023-12-21 11:55:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:25,503 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1049 transitions. [2023-12-21 11:55:25,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,503 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1049 transitions. [2023-12-21 11:55:25,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 11:55:25,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:25,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:25,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:55:25,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:25,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:25,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1936341098, now seen corresponding path program 1 times [2023-12-21 11:55:25,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:25,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362934752] [2023-12-21 11:55:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:25,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362934752] [2023-12-21 11:55:25,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362934752] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:25,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:25,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754944557] [2023-12-21 11:55:25,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:25,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:25,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:25,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:25,555 INFO L87 Difference]: Start difference. First operand 698 states and 1049 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,578 INFO L93 Difference]: Finished difference Result 1942 states and 2947 transitions. [2023-12-21 11:55:25,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:25,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 11:55:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,582 INFO L225 Difference]: With dead ends: 1942 [2023-12-21 11:55:25,582 INFO L226 Difference]: Without dead ends: 1288 [2023-12-21 11:55:25,583 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 [2023-12-21 11:55:25,583 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 61 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 256 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:25,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1288 states. [2023-12-21 11:55:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1288 to 1286. [2023-12-21 11:55:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1285 states have (on average 1.4980544747081712) internal successors, (1925), 1285 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1925 transitions. [2023-12-21 11:55:25,606 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1925 transitions. Word has length 65 [2023-12-21 11:55:25,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:25,606 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1925 transitions. [2023-12-21 11:55:25,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1925 transitions. [2023-12-21 11:55:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 11:55:25,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:25,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:25,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:55:25,607 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:25,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1047607658, now seen corresponding path program 1 times [2023-12-21 11:55:25,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:25,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310130966] [2023-12-21 11:55:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:25,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:25,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:25,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310130966] [2023-12-21 11:55:25,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310130966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:25,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:25,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:25,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135548485] [2023-12-21 11:55:25,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:25,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:25,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:25,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:25,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:25,641 INFO L87 Difference]: Start difference. First operand 1286 states and 1925 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,679 INFO L93 Difference]: Finished difference Result 3642 states and 5463 transitions. [2023-12-21 11:55:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:25,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 11:55:25,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,685 INFO L225 Difference]: With dead ends: 3642 [2023-12-21 11:55:25,685 INFO L226 Difference]: Without dead ends: 2400 [2023-12-21 11:55:25,686 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 [2023-12-21 11:55:25,687 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 59 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 258 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:25,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2400 states. [2023-12-21 11:55:25,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2400 to 2398. [2023-12-21 11:55:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 1.4806007509386734) internal successors, (3549), 2397 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 3549 transitions. [2023-12-21 11:55:25,761 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 3549 transitions. Word has length 65 [2023-12-21 11:55:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:25,761 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 3549 transitions. [2023-12-21 11:55:25,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 3549 transitions. [2023-12-21 11:55:25,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 11:55:25,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:25,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:25,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:55:25,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:25,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:25,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1310685034, now seen corresponding path program 1 times [2023-12-21 11:55:25,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:25,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147260696] [2023-12-21 11:55:25,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:25,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:25,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:25,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147260696] [2023-12-21 11:55:25,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147260696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:25,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:25,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:25,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031604736] [2023-12-21 11:55:25,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:25,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:25,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:25,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:25,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:25,796 INFO L87 Difference]: Start difference. First operand 2398 states and 3549 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:25,866 INFO L93 Difference]: Finished difference Result 6850 states and 10111 transitions. [2023-12-21 11:55:25,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:25,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2023-12-21 11:55:25,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:25,877 INFO L225 Difference]: With dead ends: 6850 [2023-12-21 11:55:25,878 INFO L226 Difference]: Without dead ends: 4496 [2023-12-21 11:55:25,880 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 [2023-12-21 11:55:25,880 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 63 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:25,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 262 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4496 states. [2023-12-21 11:55:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4496 to 4494. [2023-12-21 11:55:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4494 states, 4493 states have (on average 1.4558201647006455) internal successors, (6541), 4493 states have internal predecessors, (6541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4494 states to 4494 states and 6541 transitions. [2023-12-21 11:55:25,978 INFO L78 Accepts]: Start accepts. Automaton has 4494 states and 6541 transitions. Word has length 65 [2023-12-21 11:55:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:25,978 INFO L495 AbstractCegarLoop]: Abstraction has 4494 states and 6541 transitions. [2023-12-21 11:55:25,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:25,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4494 states and 6541 transitions. [2023-12-21 11:55:25,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 11:55:25,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:25,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:25,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:55:25,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:25,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:25,979 INFO L85 PathProgramCache]: Analyzing trace with hash -893356005, now seen corresponding path program 1 times [2023-12-21 11:55:25,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:25,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179357743] [2023-12-21 11:55:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:25,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:26,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:26,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179357743] [2023-12-21 11:55:26,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179357743] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:26,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:26,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:26,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252714704] [2023-12-21 11:55:26,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:26,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:26,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:26,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:26,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:26,015 INFO L87 Difference]: Start difference. First operand 4494 states and 6541 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:26,136 INFO L93 Difference]: Finished difference Result 9109 states and 13395 transitions. [2023-12-21 11:55:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:26,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-12-21 11:55:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:26,152 INFO L225 Difference]: With dead ends: 9109 [2023-12-21 11:55:26,154 INFO L226 Difference]: Without dead ends: 6610 [2023-12-21 11:55:26,158 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 [2023-12-21 11:55:26,158 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 66 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:26,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 259 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2023-12-21 11:55:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 6608. [2023-12-21 11:55:26,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6608 states, 6607 states have (on average 1.4504313606780688) internal successors, (9583), 6607 states have internal predecessors, (9583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6608 states to 6608 states and 9583 transitions. [2023-12-21 11:55:26,334 INFO L78 Accepts]: Start accepts. Automaton has 6608 states and 9583 transitions. Word has length 67 [2023-12-21 11:55:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:26,334 INFO L495 AbstractCegarLoop]: Abstraction has 6608 states and 9583 transitions. [2023-12-21 11:55:26,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6608 states and 9583 transitions. [2023-12-21 11:55:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 11:55:26,336 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:26,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:26,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:55:26,336 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:26,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:26,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1835176170, now seen corresponding path program 1 times [2023-12-21 11:55:26,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:26,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616062762] [2023-12-21 11:55:26,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:26,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:26,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:55:26,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616062762] [2023-12-21 11:55:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616062762] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:26,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:26,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:55:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982908142] [2023-12-21 11:55:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:55:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:55:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:55:26,482 INFO L87 Difference]: Start difference. First operand 6608 states and 9583 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:27,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:27,259 INFO L93 Difference]: Finished difference Result 47326 states and 68694 transitions. [2023-12-21 11:55:27,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:55:27,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 85 [2023-12-21 11:55:27,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:27,327 INFO L225 Difference]: With dead ends: 47326 [2023-12-21 11:55:27,328 INFO L226 Difference]: Without dead ends: 40764 [2023-12-21 11:55:27,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:55:27,341 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 910 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:27,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 1027 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40764 states. [2023-12-21 11:55:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40764 to 13168. [2023-12-21 11:55:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13168 states, 13167 states have (on average 1.4447482342219184) internal successors, (19023), 13167 states have internal predecessors, (19023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:27,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13168 states to 13168 states and 19023 transitions. [2023-12-21 11:55:27,929 INFO L78 Accepts]: Start accepts. Automaton has 13168 states and 19023 transitions. Word has length 85 [2023-12-21 11:55:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:27,929 INFO L495 AbstractCegarLoop]: Abstraction has 13168 states and 19023 transitions. [2023-12-21 11:55:27,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:27,930 INFO L276 IsEmpty]: Start isEmpty. Operand 13168 states and 19023 transitions. [2023-12-21 11:55:27,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 11:55:27,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:27,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:27,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:55:27,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:27,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash -2103759338, now seen corresponding path program 1 times [2023-12-21 11:55:27,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:27,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535536188] [2023-12-21 11:55:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:27,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 11:55:28,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:28,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535536188] [2023-12-21 11:55:28,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535536188] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:28,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:28,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:55:28,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551419343] [2023-12-21 11:55:28,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:55:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:55:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:55:28,084 INFO L87 Difference]: Start difference. First operand 13168 states and 19023 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2023-12-21 11:55:28,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:28,982 INFO L93 Difference]: Finished difference Result 53886 states and 78134 transitions. [2023-12-21 11:55:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:55:28,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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 85 [2023-12-21 11:55:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:29,048 INFO L225 Difference]: With dead ends: 53886 [2023-12-21 11:55:29,049 INFO L226 Difference]: Without dead ends: 47324 [2023-12-21 11:55:29,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:55:29,063 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 950 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:29,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 950 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:29,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47324 states. [2023-12-21 11:55:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47324 to 23024. [2023-12-21 11:55:29,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23024 states, 23023 states have (on average 1.4378230465186987) internal successors, (33103), 23023 states have internal predecessors, (33103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23024 states to 23024 states and 33103 transitions. [2023-12-21 11:55:29,879 INFO L78 Accepts]: Start accepts. Automaton has 23024 states and 33103 transitions. Word has length 85 [2023-12-21 11:55:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:29,879 INFO L495 AbstractCegarLoop]: Abstraction has 23024 states and 33103 transitions. [2023-12-21 11:55:29,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 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) [2023-12-21 11:55:29,879 INFO L276 IsEmpty]: Start isEmpty. Operand 23024 states and 33103 transitions. [2023-12-21 11:55:29,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 11:55:29,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:29,882 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:55:29,882 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:29,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:29,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1605495830, now seen corresponding path program 1 times [2023-12-21 11:55:29,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:29,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165738407] [2023-12-21 11:55:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:29,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:55:30,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:30,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165738407] [2023-12-21 11:55:30,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165738407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:30,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:30,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:55:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802083179] [2023-12-21 11:55:30,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:30,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:55:30,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:30,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:55:30,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:55:30,005 INFO L87 Difference]: Start difference. First operand 23024 states and 33103 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:31,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:31,060 INFO L93 Difference]: Finished difference Result 60446 states and 87574 transitions. [2023-12-21 11:55:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:55:31,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 11:55:31,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:31,179 INFO L225 Difference]: With dead ends: 60446 [2023-12-21 11:55:31,179 INFO L226 Difference]: Without dead ends: 53884 [2023-12-21 11:55:31,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:55:31,197 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1021 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:31,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 961 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:31,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53884 states. [2023-12-21 11:55:31,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53884 to 29584. [2023-12-21 11:55:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29584 states, 29583 states have (on average 1.4380894432613325) internal successors, (42543), 29583 states have internal predecessors, (42543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29584 states to 29584 states and 42543 transitions. [2023-12-21 11:55:32,047 INFO L78 Accepts]: Start accepts. Automaton has 29584 states and 42543 transitions. Word has length 85 [2023-12-21 11:55:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:32,047 INFO L495 AbstractCegarLoop]: Abstraction has 29584 states and 42543 transitions. [2023-12-21 11:55:32,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 29584 states and 42543 transitions. [2023-12-21 11:55:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 11:55:32,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:32,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:32,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:55:32,052 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:32,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1800738026, now seen corresponding path program 1 times [2023-12-21 11:55:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:32,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019558145] [2023-12-21 11:55:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:32,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:55:32,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:32,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019558145] [2023-12-21 11:55:32,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019558145] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:32,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:32,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:55:32,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888522681] [2023-12-21 11:55:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:55:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:55:32,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:55:32,199 INFO L87 Difference]: Start difference. First operand 29584 states and 42543 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:33,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:33,442 INFO L93 Difference]: Finished difference Result 67006 states and 97014 transitions. [2023-12-21 11:55:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:55:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 11:55:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:33,520 INFO L225 Difference]: With dead ends: 67006 [2023-12-21 11:55:33,520 INFO L226 Difference]: Without dead ends: 60444 [2023-12-21 11:55:33,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:55:33,539 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 936 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:33,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 985 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60444 states. [2023-12-21 11:55:34,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60444 to 36144. [2023-12-21 11:55:34,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36144 states, 36143 states have (on average 1.4382591373156628) internal successors, (51983), 36143 states have internal predecessors, (51983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:34,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36144 states to 36144 states and 51983 transitions. [2023-12-21 11:55:34,580 INFO L78 Accepts]: Start accepts. Automaton has 36144 states and 51983 transitions. Word has length 85 [2023-12-21 11:55:34,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:34,580 INFO L495 AbstractCegarLoop]: Abstraction has 36144 states and 51983 transitions. [2023-12-21 11:55:34,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:34,581 INFO L276 IsEmpty]: Start isEmpty. Operand 36144 states and 51983 transitions. [2023-12-21 11:55:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-12-21 11:55:34,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:34,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:34,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:55:34,583 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:34,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2063815402, now seen corresponding path program 1 times [2023-12-21 11:55:34,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:34,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433585711] [2023-12-21 11:55:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:34,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:55:34,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:34,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433585711] [2023-12-21 11:55:34,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433585711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:34,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:34,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:55:34,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383553057] [2023-12-21 11:55:34,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:34,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:55:34,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:55:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:55:34,715 INFO L87 Difference]: Start difference. First operand 36144 states and 51983 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:35,998 INFO L93 Difference]: Finished difference Result 73566 states and 106454 transitions. [2023-12-21 11:55:35,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:55:35,998 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2023-12-21 11:55:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:36,076 INFO L225 Difference]: With dead ends: 73566 [2023-12-21 11:55:36,076 INFO L226 Difference]: Without dead ends: 67004 [2023-12-21 11:55:36,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:55:36,100 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 848 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:36,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1107 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:36,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67004 states. [2023-12-21 11:55:37,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67004 to 42704. [2023-12-21 11:55:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42704 states, 42703 states have (on average 1.4383766948457954) internal successors, (61423), 42703 states have internal predecessors, (61423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:37,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42704 states to 42704 states and 61423 transitions. [2023-12-21 11:55:37,355 INFO L78 Accepts]: Start accepts. Automaton has 42704 states and 61423 transitions. Word has length 85 [2023-12-21 11:55:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:37,356 INFO L495 AbstractCegarLoop]: Abstraction has 42704 states and 61423 transitions. [2023-12-21 11:55:37,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 42704 states and 61423 transitions. [2023-12-21 11:55:37,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 11:55:37,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:37,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:37,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:55:37,360 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:37,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 868781662, now seen corresponding path program 1 times [2023-12-21 11:55:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547108991] [2023-12-21 11:55:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:37,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:37,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547108991] [2023-12-21 11:55:37,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547108991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:37,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:37,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184637738] [2023-12-21 11:55:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:37,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:37,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:37,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:37,427 INFO L87 Difference]: Start difference. First operand 42704 states and 61423 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:38,095 INFO L93 Difference]: Finished difference Result 72681 states and 105127 transitions. [2023-12-21 11:55:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:38,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 11:55:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:38,131 INFO L225 Difference]: With dead ends: 72681 [2023-12-21 11:55:38,131 INFO L226 Difference]: Without dead ends: 30023 [2023-12-21 11:55:38,162 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 [2023-12-21 11:55:38,162 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 58 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:38,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 275 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:38,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30023 states. [2023-12-21 11:55:38,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30023 to 30021. [2023-12-21 11:55:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30021 states, 30020 states have (on average 1.4434377081945369) internal successors, (43332), 30020 states have internal predecessors, (43332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30021 states to 30021 states and 43332 transitions. [2023-12-21 11:55:39,035 INFO L78 Accepts]: Start accepts. Automaton has 30021 states and 43332 transitions. Word has length 87 [2023-12-21 11:55:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:39,035 INFO L495 AbstractCegarLoop]: Abstraction has 30021 states and 43332 transitions. [2023-12-21 11:55:39,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 30021 states and 43332 transitions. [2023-12-21 11:55:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-21 11:55:39,037 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:39,037 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:39,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:55:39,037 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:39,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1197833371, now seen corresponding path program 1 times [2023-12-21 11:55:39,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:39,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426639032] [2023-12-21 11:55:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:55:39,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:39,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426639032] [2023-12-21 11:55:39,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426639032] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:39,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:39,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:55:39,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177787288] [2023-12-21 11:55:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:39,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:55:39,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:39,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:55:39,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:55:39,260 INFO L87 Difference]: Start difference. First operand 30021 states and 43332 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:40,220 INFO L93 Difference]: Finished difference Result 57683 states and 83659 transitions. [2023-12-21 11:55:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:55:40,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-21 11:55:40,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:40,278 INFO L225 Difference]: With dead ends: 57683 [2023-12-21 11:55:40,278 INFO L226 Difference]: Without dead ends: 53073 [2023-12-21 11:55:40,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:55:40,289 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 916 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:40,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1175 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:55:40,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53073 states. [2023-12-21 11:55:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53073 to 34629. [2023-12-21 11:55:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34629 states, 34628 states have (on average 1.4435716761002657) internal successors, (49988), 34628 states have internal predecessors, (49988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34629 states to 34629 states and 49988 transitions. [2023-12-21 11:55:41,187 INFO L78 Accepts]: Start accepts. Automaton has 34629 states and 49988 transitions. Word has length 87 [2023-12-21 11:55:41,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:41,187 INFO L495 AbstractCegarLoop]: Abstraction has 34629 states and 49988 transitions. [2023-12-21 11:55:41,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:41,187 INFO L276 IsEmpty]: Start isEmpty. Operand 34629 states and 49988 transitions. [2023-12-21 11:55:41,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 11:55:41,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:41,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:41,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:55:41,189 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:41,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:41,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1191746063, now seen corresponding path program 1 times [2023-12-21 11:55:41,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:41,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670829123] [2023-12-21 11:55:41,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:41,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:41,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:41,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670829123] [2023-12-21 11:55:41,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670829123] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:41,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:41,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:41,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700113412] [2023-12-21 11:55:41,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:41,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:41,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:41,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:41,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:41,255 INFO L87 Difference]: Start difference. First operand 34629 states and 49988 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:41,585 INFO L93 Difference]: Finished difference Result 51913 states and 74950 transitions. [2023-12-21 11:55:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-21 11:55:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:41,600 INFO L225 Difference]: With dead ends: 51913 [2023-12-21 11:55:41,600 INFO L226 Difference]: Without dead ends: 17351 [2023-12-21 11:55:41,618 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 [2023-12-21 11:55:41,618 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:41,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 260 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17351 states. [2023-12-21 11:55:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17351 to 17349. [2023-12-21 11:55:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17349 states, 17348 states have (on average 1.4288678810237492) internal successors, (24788), 17348 states have internal predecessors, (24788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:42,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17349 states to 17349 states and 24788 transitions. [2023-12-21 11:55:42,165 INFO L78 Accepts]: Start accepts. Automaton has 17349 states and 24788 transitions. Word has length 88 [2023-12-21 11:55:42,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:42,166 INFO L495 AbstractCegarLoop]: Abstraction has 17349 states and 24788 transitions. [2023-12-21 11:55:42,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:42,166 INFO L276 IsEmpty]: Start isEmpty. Operand 17349 states and 24788 transitions. [2023-12-21 11:55:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:55:42,167 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:42,168 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:42,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:55:42,168 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:42,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:42,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1897198243, now seen corresponding path program 1 times [2023-12-21 11:55:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:42,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598447361] [2023-12-21 11:55:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:42,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598447361] [2023-12-21 11:55:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598447361] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:42,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605777882] [2023-12-21 11:55:42,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:42,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:42,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:42,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:42,283 INFO L87 Difference]: Start difference. First operand 17349 states and 24788 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:42,497 INFO L93 Difference]: Finished difference Result 25993 states and 37150 transitions. [2023-12-21 11:55:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:42,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2023-12-21 11:55:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:42,505 INFO L225 Difference]: With dead ends: 25993 [2023-12-21 11:55:42,505 INFO L226 Difference]: Without dead ends: 8711 [2023-12-21 11:55:42,514 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 [2023-12-21 11:55:42,516 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 50 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:42,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 245 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:42,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2023-12-21 11:55:42,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 8709. [2023-12-21 11:55:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8709 states, 8708 states have (on average 1.4134129536058797) internal successors, (12308), 8708 states have internal predecessors, (12308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 12308 transitions. [2023-12-21 11:55:42,758 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 12308 transitions. Word has length 90 [2023-12-21 11:55:42,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:42,758 INFO L495 AbstractCegarLoop]: Abstraction has 8709 states and 12308 transitions. [2023-12-21 11:55:42,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:42,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 12308 transitions. [2023-12-21 11:55:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 11:55:42,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:42,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:42,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:55:42,761 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:42,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:42,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1756777003, now seen corresponding path program 1 times [2023-12-21 11:55:42,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:42,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647005413] [2023-12-21 11:55:42,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:42,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:42,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647005413] [2023-12-21 11:55:42,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647005413] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:42,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:42,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:42,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382144998] [2023-12-21 11:55:42,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:42,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:42,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:42,834 INFO L87 Difference]: Start difference. First operand 8709 states and 12308 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:42,948 INFO L93 Difference]: Finished difference Result 13033 states and 18430 transitions. [2023-12-21 11:55:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:42,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-21 11:55:42,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:42,952 INFO L225 Difference]: With dead ends: 13033 [2023-12-21 11:55:42,952 INFO L226 Difference]: Without dead ends: 4391 [2023-12-21 11:55:42,957 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 [2023-12-21 11:55:42,959 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 47 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:42,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 230 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2023-12-21 11:55:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 4389. [2023-12-21 11:55:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4389 states, 4388 states have (on average 1.3965360072926163) internal successors, (6128), 4388 states have internal predecessors, (6128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4389 states to 4389 states and 6128 transitions. [2023-12-21 11:55:43,146 INFO L78 Accepts]: Start accepts. Automaton has 4389 states and 6128 transitions. Word has length 92 [2023-12-21 11:55:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:43,147 INFO L495 AbstractCegarLoop]: Abstraction has 4389 states and 6128 transitions. [2023-12-21 11:55:43,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:43,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4389 states and 6128 transitions. [2023-12-21 11:55:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:55:43,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:43,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:43,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 11:55:43,148 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:43,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash 707997817, now seen corresponding path program 1 times [2023-12-21 11:55:43,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:43,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010079480] [2023-12-21 11:55:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:43,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:43,212 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:43,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:43,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010079480] [2023-12-21 11:55:43,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010079480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:43,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:43,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:43,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540994944] [2023-12-21 11:55:43,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:43,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:43,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:43,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:43,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:43,214 INFO L87 Difference]: Start difference. First operand 4389 states and 6128 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:43,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:43,261 INFO L93 Difference]: Finished difference Result 6553 states and 9160 transitions. [2023-12-21 11:55:43,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:43,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-12-21 11:55:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:43,263 INFO L225 Difference]: With dead ends: 6553 [2023-12-21 11:55:43,263 INFO L226 Difference]: Without dead ends: 2231 [2023-12-21 11:55:43,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:43,265 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 44 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:43,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 215 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2023-12-21 11:55:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2229. [2023-12-21 11:55:43,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 2228 states have (on average 1.377019748653501) internal successors, (3068), 2228 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3068 transitions. [2023-12-21 11:55:43,311 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3068 transitions. Word has length 94 [2023-12-21 11:55:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:43,311 INFO L495 AbstractCegarLoop]: Abstraction has 2229 states and 3068 transitions. [2023-12-21 11:55:43,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:43,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3068 transitions. [2023-12-21 11:55:43,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 11:55:43,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:43,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 11:55:43,313 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:43,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1899847609, now seen corresponding path program 1 times [2023-12-21 11:55:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:43,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630242557] [2023-12-21 11:55:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:43,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:43,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:43,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630242557] [2023-12-21 11:55:43,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630242557] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:55:43,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:55:43,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:55:43,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699490777] [2023-12-21 11:55:43,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:55:43,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:55:43,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:43,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:55:43,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:55:43,370 INFO L87 Difference]: Start difference. First operand 2229 states and 3068 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:43,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:43,396 INFO L93 Difference]: Finished difference Result 3313 states and 4570 transitions. [2023-12-21 11:55:43,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:55:43,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2023-12-21 11:55:43,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:43,398 INFO L225 Difference]: With dead ends: 3313 [2023-12-21 11:55:43,398 INFO L226 Difference]: Without dead ends: 1151 [2023-12-21 11:55:43,399 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 [2023-12-21 11:55:43,399 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 41 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:43,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 200 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:55:43,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-12-21 11:55:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1149. [2023-12-21 11:55:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 1.352787456445993) internal successors, (1553), 1148 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1553 transitions. [2023-12-21 11:55:43,423 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1553 transitions. Word has length 96 [2023-12-21 11:55:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:43,423 INFO L495 AbstractCegarLoop]: Abstraction has 1149 states and 1553 transitions. [2023-12-21 11:55:43,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:43,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1553 transitions. [2023-12-21 11:55:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-21 11:55:43,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:43,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:43,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 11:55:43,424 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:43,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:43,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2057471595, now seen corresponding path program 1 times [2023-12-21 11:55:43,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:43,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197685970] [2023-12-21 11:55:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:43,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:44,234 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:44,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:44,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197685970] [2023-12-21 11:55:44,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197685970] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:55:44,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917827094] [2023-12-21 11:55:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:44,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:55:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:55:44,250 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) [2023-12-21 11:55:44,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:55:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:44,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 11:55:44,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:55:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:55:44,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:55:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 11:55:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917827094] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:55:44,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:55:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 16 [2023-12-21 11:55:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642808103] [2023-12-21 11:55:44,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:55:44,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:55:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:44,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:55:44,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:55:44,631 INFO L87 Difference]: Start difference. First operand 1149 states and 1553 transitions. Second operand has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:48,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:48,817 INFO L93 Difference]: Finished difference Result 10084 states and 13599 transitions. [2023-12-21 11:55:48,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-21 11:55:48,818 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 0 states have call successors, (0), 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 98 [2023-12-21 11:55:48,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:48,826 INFO L225 Difference]: With dead ends: 10084 [2023-12-21 11:55:48,826 INFO L226 Difference]: Without dead ends: 9002 [2023-12-21 11:55:48,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1544 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=862, Invalid=3968, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 11:55:48,829 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 3042 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:48,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 705 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:55:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9002 states. [2023-12-21 11:55:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9002 to 8554. [2023-12-21 11:55:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8554 states, 8553 states have (on average 1.3129895942943997) internal successors, (11230), 8553 states have internal predecessors, (11230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8554 states to 8554 states and 11230 transitions. [2023-12-21 11:55:49,050 INFO L78 Accepts]: Start accepts. Automaton has 8554 states and 11230 transitions. Word has length 98 [2023-12-21 11:55:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:49,050 INFO L495 AbstractCegarLoop]: Abstraction has 8554 states and 11230 transitions. [2023-12-21 11:55:49,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 17.5625) internal successors, (281), 16 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 8554 states and 11230 transitions. [2023-12-21 11:55:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 11:55:49,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:49,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:49,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 11:55:49,255 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,SelfDestructingSolverStorable24 [2023-12-21 11:55:49,256 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:49,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:49,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1180841429, now seen corresponding path program 1 times [2023-12-21 11:55:49,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:49,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773111241] [2023-12-21 11:55:49,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:49,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:49,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773111241] [2023-12-21 11:55:49,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773111241] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:55:49,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750527085] [2023-12-21 11:55:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:49,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:55:49,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:55:49,897 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) [2023-12-21 11:55:49,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:55:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:49,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:55:49,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:55:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:50,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:55:51,385 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:51,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750527085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:55:51,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:55:51,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-12-21 11:55:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861281091] [2023-12-21 11:55:51,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:55:51,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:55:51,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:51,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:55:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:55:51,387 INFO L87 Difference]: Start difference. First operand 8554 states and 11230 transitions. Second operand has 32 states, 32 states have (on average 8.34375) internal successors, (267), 31 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:55,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:55:55,443 INFO L93 Difference]: Finished difference Result 38261 states and 50025 transitions. [2023-12-21 11:55:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-21 11:55:55,443 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.34375) internal successors, (267), 31 states have internal predecessors, (267), 0 states have call successors, (0), 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 99 [2023-12-21 11:55:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:55:55,473 INFO L225 Difference]: With dead ends: 38261 [2023-12-21 11:55:55,474 INFO L226 Difference]: Without dead ends: 30030 [2023-12-21 11:55:55,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3016 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1510, Invalid=8390, Unknown=0, NotChecked=0, Total=9900 [2023-12-21 11:55:55,484 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 2557 mSDsluCounter, 2008 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 2068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:55:55,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2557 Valid, 2140 Invalid, 2068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:55:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30030 states. [2023-12-21 11:55:55,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30030 to 15861. [2023-12-21 11:55:56,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15861 states, 15860 states have (on average 1.290857503152585) internal successors, (20473), 15860 states have internal predecessors, (20473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:56,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15861 states to 15861 states and 20473 transitions. [2023-12-21 11:55:56,026 INFO L78 Accepts]: Start accepts. Automaton has 15861 states and 20473 transitions. Word has length 99 [2023-12-21 11:55:56,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:55:56,026 INFO L495 AbstractCegarLoop]: Abstraction has 15861 states and 20473 transitions. [2023-12-21 11:55:56,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.34375) internal successors, (267), 31 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:55:56,026 INFO L276 IsEmpty]: Start isEmpty. Operand 15861 states and 20473 transitions. [2023-12-21 11:55:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 11:55:56,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:55:56,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:55:56,032 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 11:55:56,231 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,SelfDestructingSolverStorable25 [2023-12-21 11:55:56,232 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:55:56,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:55:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1348808747, now seen corresponding path program 1 times [2023-12-21 11:55:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:55:56,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37884253] [2023-12-21 11:55:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:56,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:55:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:55:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37884253] [2023-12-21 11:55:56,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37884253] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:55:56,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366822655] [2023-12-21 11:55:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:55:56,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:55:56,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:55:56,441 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) [2023-12-21 11:55:56,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:55:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:55:56,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 11:55:56,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:55:57,423 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:57,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:55:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:55:58,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366822655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:55:58,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:55:58,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-21 11:55:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171457880] [2023-12-21 11:55:58,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:55:58,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 11:55:58,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:55:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 11:55:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:55:58,238 INFO L87 Difference]: Start difference. First operand 15861 states and 20473 transitions. Second operand has 29 states, 29 states have (on average 9.068965517241379) internal successors, (263), 28 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:56:04,243 INFO L93 Difference]: Finished difference Result 66624 states and 85072 transitions. [2023-12-21 11:56:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-21 11:56:04,244 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.068965517241379) internal successors, (263), 28 states have internal predecessors, (263), 0 states have call successors, (0), 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 99 [2023-12-21 11:56:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:56:04,301 INFO L225 Difference]: With dead ends: 66624 [2023-12-21 11:56:04,301 INFO L226 Difference]: Without dead ends: 56721 [2023-12-21 11:56:04,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4035 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1972, Invalid=10684, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 11:56:04,310 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 4494 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4494 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:56:04,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4494 Valid, 2203 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:56:04,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56721 states. [2023-12-21 11:56:05,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56721 to 25857. [2023-12-21 11:56:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25857 states, 25856 states have (on average 1.265625) internal successors, (32724), 25856 states have internal predecessors, (32724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:05,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25857 states to 25857 states and 32724 transitions. [2023-12-21 11:56:05,467 INFO L78 Accepts]: Start accepts. Automaton has 25857 states and 32724 transitions. Word has length 99 [2023-12-21 11:56:05,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:56:05,467 INFO L495 AbstractCegarLoop]: Abstraction has 25857 states and 32724 transitions. [2023-12-21 11:56:05,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.068965517241379) internal successors, (263), 28 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 25857 states and 32724 transitions. [2023-12-21 11:56:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-21 11:56:05,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:56:05,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:56:05,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 11:56:05,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:56:05,677 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:56:05,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:56:05,677 INFO L85 PathProgramCache]: Analyzing trace with hash -391663317, now seen corresponding path program 1 times [2023-12-21 11:56:05,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:56:05,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872272728] [2023-12-21 11:56:05,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:56:05,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:56:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:56:06,401 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:06,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:56:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872272728] [2023-12-21 11:56:06,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872272728] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:56:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342005387] [2023-12-21 11:56:06,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:56:06,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:56:06,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:56:06,403 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) [2023-12-21 11:56:06,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:56:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:56:06,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 11:56:06,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:56:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:06,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:56:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:07,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342005387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:56:07,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:56:07,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 25 [2023-12-21 11:56:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783667270] [2023-12-21 11:56:07,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:56:07,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 11:56:07,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:56:07,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 11:56:07,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2023-12-21 11:56:07,880 INFO L87 Difference]: Start difference. First operand 25857 states and 32724 transitions. Second operand has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:56:15,647 INFO L93 Difference]: Finished difference Result 138608 states and 175551 transitions. [2023-12-21 11:56:15,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 11:56:15,647 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 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 99 [2023-12-21 11:56:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:56:15,770 INFO L225 Difference]: With dead ends: 138608 [2023-12-21 11:56:15,770 INFO L226 Difference]: Without dead ends: 114105 [2023-12-21 11:56:15,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=767, Invalid=3393, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 11:56:15,785 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 2043 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2043 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:56:15,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2043 Valid, 1435 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:56:15,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114105 states. [2023-12-21 11:56:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114105 to 107799. [2023-12-21 11:56:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107799 states, 107798 states have (on average 1.2468227610901872) internal successors, (134405), 107798 states have internal predecessors, (134405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107799 states to 107799 states and 134405 transitions. [2023-12-21 11:56:20,821 INFO L78 Accepts]: Start accepts. Automaton has 107799 states and 134405 transitions. Word has length 99 [2023-12-21 11:56:20,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:56:20,821 INFO L495 AbstractCegarLoop]: Abstraction has 107799 states and 134405 transitions. [2023-12-21 11:56:20,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.5) internal successors, (273), 25 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 107799 states and 134405 transitions. [2023-12-21 11:56:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 11:56:20,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:56:20,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:56:20,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 11:56:21,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-21 11:56:21,028 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:56:21,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:56:21,029 INFO L85 PathProgramCache]: Analyzing trace with hash 73112959, now seen corresponding path program 1 times [2023-12-21 11:56:21,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:56:21,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960442352] [2023-12-21 11:56:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:56:21,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:56:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:56:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:21,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:56:21,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960442352] [2023-12-21 11:56:21,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960442352] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:56:21,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049199431] [2023-12-21 11:56:21,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:56:21,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:56:21,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:56:21,282 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:56:21,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:56:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:56:21,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:56:21,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:56:21,941 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:21,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:56:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:22,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049199431] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:56:22,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:56:22,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-21 11:56:22,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660017691] [2023-12-21 11:56:22,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:56:22,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:56:22,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:56:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:56:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:56:22,616 INFO L87 Difference]: Start difference. First operand 107799 states and 134405 transitions. Second operand has 19 states, 19 states have (on average 12.052631578947368) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:56:31,358 INFO L93 Difference]: Finished difference Result 319755 states and 399147 transitions. [2023-12-21 11:56:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 11:56:31,358 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.052631578947368) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 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 101 [2023-12-21 11:56:31,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:56:31,727 INFO L225 Difference]: With dead ends: 319755 [2023-12-21 11:56:31,728 INFO L226 Difference]: Without dead ends: 224499 [2023-12-21 11:56:31,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:56:31,774 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 615 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:56:31,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 407 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 11:56:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224499 states. [2023-12-21 11:56:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224499 to 216055. [2023-12-21 11:56:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216055 states, 216054 states have (on average 1.2360798689216586) internal successors, (267060), 216054 states have internal predecessors, (267060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216055 states to 216055 states and 267060 transitions. [2023-12-21 11:56:41,917 INFO L78 Accepts]: Start accepts. Automaton has 216055 states and 267060 transitions. Word has length 101 [2023-12-21 11:56:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:56:41,917 INFO L495 AbstractCegarLoop]: Abstraction has 216055 states and 267060 transitions. [2023-12-21 11:56:41,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.052631578947368) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 216055 states and 267060 transitions. [2023-12-21 11:56:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 11:56:41,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:56:41,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:56:41,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 11:56:42,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-21 11:56:42,126 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:56:42,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:56:42,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1776114675, now seen corresponding path program 1 times [2023-12-21 11:56:42,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:56:42,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662072847] [2023-12-21 11:56:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:56:42,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:56:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:56:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:42,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:56:42,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662072847] [2023-12-21 11:56:42,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662072847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:56:42,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620274787] [2023-12-21 11:56:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:56:42,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:56:42,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:56:42,626 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:56:42,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 11:56:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:56:42,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 11:56:42,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:56:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:43,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:56:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:56:43,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620274787] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:56:43,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:56:43,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-12-21 11:56:43,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278342420] [2023-12-21 11:56:43,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:56:43,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 11:56:43,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:56:43,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 11:56:43,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:56:43,915 INFO L87 Difference]: Start difference. First operand 216055 states and 267060 transitions. Second operand has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 28 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:56:53,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:56:53,410 INFO L93 Difference]: Finished difference Result 341506 states and 423208 transitions. [2023-12-21 11:56:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 11:56:53,411 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 28 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 11:56:53,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:56:53,898 INFO L225 Difference]: With dead ends: 341506 [2023-12-21 11:56:53,898 INFO L226 Difference]: Without dead ends: 230555 [2023-12-21 11:56:53,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=399, Invalid=1493, Unknown=0, NotChecked=0, Total=1892 [2023-12-21 11:56:53,980 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 1146 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:56:53,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 1237 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:56:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230555 states. [2023-12-21 11:57:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230555 to 209757. [2023-12-21 11:57:03,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209757 states, 209756 states have (on average 1.2311638284482922) internal successors, (258244), 209756 states have internal predecessors, (258244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:57:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209757 states to 209757 states and 258244 transitions. [2023-12-21 11:57:04,238 INFO L78 Accepts]: Start accepts. Automaton has 209757 states and 258244 transitions. Word has length 102 [2023-12-21 11:57:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:57:04,238 INFO L495 AbstractCegarLoop]: Abstraction has 209757 states and 258244 transitions. [2023-12-21 11:57:04,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 28 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:57:04,239 INFO L276 IsEmpty]: Start isEmpty. Operand 209757 states and 258244 transitions. [2023-12-21 11:57:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 11:57:04,242 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:57:04,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:57:04,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 11:57:04,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:57:04,447 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:57:04,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:57:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash 711390503, now seen corresponding path program 1 times [2023-12-21 11:57:04,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:57:04,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272888012] [2023-12-21 11:57:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:57:04,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:57:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:57:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:04,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:57:04,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272888012] [2023-12-21 11:57:04,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272888012] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:57:04,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510463611] [2023-12-21 11:57:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:57:04,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:57:04,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:57:04,750 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:57:04,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 11:57:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:57:04,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:57:04,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:57:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:05,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:57:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:06,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510463611] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:57:06,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:57:06,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 25 [2023-12-21 11:57:06,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547847794] [2023-12-21 11:57:06,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:57:06,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 11:57:06,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:57:06,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 11:57:06,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2023-12-21 11:57:06,524 INFO L87 Difference]: Start difference. First operand 209757 states and 258244 transitions. Second operand has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:57:12,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:57:12,100 INFO L93 Difference]: Finished difference Result 304301 states and 375847 transitions. [2023-12-21 11:57:12,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 11:57:12,101 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-21 11:57:12,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:57:12,237 INFO L225 Difference]: With dead ends: 304301 [2023-12-21 11:57:12,237 INFO L226 Difference]: Without dead ends: 105393 [2023-12-21 11:57:12,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=1010, Unknown=0, NotChecked=0, Total=1260 [2023-12-21 11:57:12,284 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 613 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:57:12,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1179 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:57:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105393 states. [2023-12-21 11:57:17,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105393 to 102635. [2023-12-21 11:57:17,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102635 states, 102634 states have (on average 1.2364323713389325) internal successors, (126900), 102634 states have internal predecessors, (126900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:57:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102635 states to 102635 states and 126900 transitions. [2023-12-21 11:57:17,847 INFO L78 Accepts]: Start accepts. Automaton has 102635 states and 126900 transitions. Word has length 102 [2023-12-21 11:57:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:57:17,847 INFO L495 AbstractCegarLoop]: Abstraction has 102635 states and 126900 transitions. [2023-12-21 11:57:17,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.26923076923077) internal successors, (267), 25 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:57:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 102635 states and 126900 transitions. [2023-12-21 11:57:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 11:57:17,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:57:17,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:57:17,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 11:57:18,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:57:18,054 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:57:18,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:57:18,054 INFO L85 PathProgramCache]: Analyzing trace with hash -108608401, now seen corresponding path program 1 times [2023-12-21 11:57:18,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:57:18,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288419506] [2023-12-21 11:57:18,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:57:18,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:57:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:57:18,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:18,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:57:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288419506] [2023-12-21 11:57:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288419506] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:57:18,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325064943] [2023-12-21 11:57:18,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:57:18,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:57:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:57:18,925 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:57:18,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 11:57:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:57:19,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 11:57:19,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:57:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:20,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:57:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:20,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325064943] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:57:20,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:57:20,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-12-21 11:57:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70067776] [2023-12-21 11:57:20,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:57:20,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:57:20,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:57:20,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:57:20,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=776, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:57:20,767 INFO L87 Difference]: Start difference. First operand 102635 states and 126900 transitions. Second operand has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:57:29,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:57:29,635 INFO L93 Difference]: Finished difference Result 153263 states and 187658 transitions. [2023-12-21 11:57:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 11:57:29,636 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-21 11:57:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:57:29,758 INFO L225 Difference]: With dead ends: 153263 [2023-12-21 11:57:29,758 INFO L226 Difference]: Without dead ends: 109093 [2023-12-21 11:57:29,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=640, Invalid=2666, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 11:57:29,774 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1144 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:57:29,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1437 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:57:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109093 states. [2023-12-21 11:57:34,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109093 to 91871. [2023-12-21 11:57:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91871 states, 91870 states have (on average 1.234842712528573) internal successors, (113445), 91870 states have internal predecessors, (113445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:57:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91871 states to 91871 states and 113445 transitions. [2023-12-21 11:57:35,124 INFO L78 Accepts]: Start accepts. Automaton has 91871 states and 113445 transitions. Word has length 103 [2023-12-21 11:57:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:57:35,125 INFO L495 AbstractCegarLoop]: Abstraction has 91871 states and 113445 transitions. [2023-12-21 11:57:35,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.2) internal successors, (276), 29 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 11:57:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 91871 states and 113445 transitions. [2023-12-21 11:57:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 11:57:35,126 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:57:35,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:57:35,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 11:57:35,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-21 11:57:35,331 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:57:35,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:57:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -918094957, now seen corresponding path program 1 times [2023-12-21 11:57:35,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:57:35,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457640357] [2023-12-21 11:57:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:57:35,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:57:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:57:35,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:35,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:57:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457640357] [2023-12-21 11:57:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457640357] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:57:35,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784624486] [2023-12-21 11:57:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:57:35,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:57:35,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:57:35,999 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:57:36,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 11:57:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:57:36,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 71 conjunts are in the unsatisfiable core [2023-12-21 11:57:36,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:57:43,481 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:43,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:57:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:57:52,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784624486] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:57:52,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:57:52,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 36, 32] total 76 [2023-12-21 11:57:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584123895] [2023-12-21 11:57:52,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:57:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-21 11:57:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:57:52,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-21 11:57:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=5091, Unknown=0, NotChecked=0, Total=5700 [2023-12-21 11:57:52,371 INFO L87 Difference]: Start difference. First operand 91871 states and 113445 transitions. Second operand has 76 states, 76 states have (on average 3.8421052631578947) internal successors, (292), 76 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)