/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/eca-rers2012/Problem17_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 02:16:46,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 02:16:46,689 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 02:16:46,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 02:16:46,692 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 02:16:46,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 02:16:46,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 02:16:46,723 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 02:16:46,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 02:16:46,724 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 02:16:46,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 02:16:46,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 02:16:46,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 02:16:46,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 02:16:46,741 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 02:16:46,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 02:16:46,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 02:16:46,742 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 02:16:46,742 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 02:16:46,742 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 02:16:46,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 02:16:46,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 02:16:46,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 02:16:46,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 02:16:46,744 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 02:16:46,744 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 02:16:46,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 02:16:46,744 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 02:16:46,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 02:16:46,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 02:16:46,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 02:16:46,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 02:16:46,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:16:46,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 02:16:46,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 02:16:46,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 02:16:46,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 02:16:46,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 02:16:46,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 02:16:46,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 02:16:46,747 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 02:16:46,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 02:16:46,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 02:16:46,747 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 02:16:46,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 02:16:46,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 02:16:46,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 02:16:46,983 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 02:16:46,991 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 02:16:46,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label57.c [2023-12-16 02:16:48,205 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 02:16:48,517 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 02:16:48,518 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label57.c [2023-12-16 02:16:48,537 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e29c4b5b5/4329f46f50f54653abdc122c52a66fd3/FLAG5b64e2cca [2023-12-16 02:16:48,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e29c4b5b5/4329f46f50f54653abdc122c52a66fd3 [2023-12-16 02:16:48,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 02:16:48,553 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 02:16:48,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 02:16:48,555 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 02:16:48,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 02:16:48,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:16:48" (1/1) ... [2023-12-16 02:16:48,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36be4f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:48, skipping insertion in model container [2023-12-16 02:16:48,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:16:48" (1/1) ... [2023-12-16 02:16:48,640 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 02:16:48,783 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label57.c[2672,2685] [2023-12-16 02:16:49,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:16:49,389 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 02:16:49,408 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label57.c[2672,2685] [2023-12-16 02:16:49,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 02:16:49,591 INFO L206 MainTranslator]: Completed translation [2023-12-16 02:16:49,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49 WrapperNode [2023-12-16 02:16:49,593 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 02:16:49,594 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 02:16:49,594 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 02:16:49,594 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 02:16:49,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:49,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:49,864 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-16 02:16:49,864 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 02:16:49,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 02:16:49,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 02:16:49,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 02:16:49,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:49,873 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:49,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:50,070 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 02:16:50,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:50,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:50,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:50,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:50,183 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:50,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:50,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 02:16:50,223 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 02:16:50,223 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 02:16:50,223 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 02:16:50,224 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (1/1) ... [2023-12-16 02:16:50,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 02:16:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:16:50,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 02:16:50,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 02:16:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 02:16:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 02:16:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 02:16:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 02:16:50,320 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 02:16:50,322 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 02:16:52,868 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 02:16:52,900 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 02:16:52,900 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 02:16:52,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:16:52 BoogieIcfgContainer [2023-12-16 02:16:52,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 02:16:52,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 02:16:52,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 02:16:52,904 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 02:16:52,904 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:16:48" (1/3) ... [2023-12-16 02:16:52,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d14358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:16:52, skipping insertion in model container [2023-12-16 02:16:52,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:16:49" (2/3) ... [2023-12-16 02:16:52,905 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d14358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:16:52, skipping insertion in model container [2023-12-16 02:16:52,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:16:52" (3/3) ... [2023-12-16 02:16:52,906 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label57.c [2023-12-16 02:16:52,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 02:16:52,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 02:16:52,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 02:16:52,962 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;@346f03bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 02:16:52,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 02:16:52,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 02:16:52,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:52,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:52,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:52,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:52,981 INFO L85 PathProgramCache]: Analyzing trace with hash -332554113, now seen corresponding path program 1 times [2023-12-16 02:16:52,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:52,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369832936] [2023-12-16 02:16:52,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:52,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:53,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:53,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369832936] [2023-12-16 02:16:53,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369832936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:53,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:53,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:16:53,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649163244] [2023-12-16 02:16:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:53,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 02:16:53,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 02:16:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:16:53,195 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:53,283 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-16 02:16:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 02:16:53,296 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-12-16 02:16:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:53,305 INFO L225 Difference]: With dead ends: 1055 [2023-12-16 02:16:53,306 INFO L226 Difference]: Without dead ends: 526 [2023-12-16 02:16:53,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 02:16:53,319 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:53,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 02:16:53,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-16 02:16:53,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-16 02:16:53,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-16 02:16:53,373 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 16 [2023-12-16 02:16:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:53,373 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-16 02:16:53,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:53,373 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-16 02:16:53,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-16 02:16:53,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:53,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:16:53,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 02:16:53,374 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:53,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:53,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1367220911, now seen corresponding path program 1 times [2023-12-16 02:16:53,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:53,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524836669] [2023-12-16 02:16:53,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:53,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:53,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:53,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:53,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524836669] [2023-12-16 02:16:53,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524836669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:53,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:53,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:16:53,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131577067] [2023-12-16 02:16:53,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:53,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:53,434 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:55,635 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-16 02:16:55,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:55,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2023-12-16 02:16:55,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:55,641 INFO L225 Difference]: With dead ends: 1522 [2023-12-16 02:16:55,641 INFO L226 Difference]: Without dead ends: 997 [2023-12-16 02:16:55,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:55,643 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 494 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:55,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 02:16:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-16 02:16:55,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-16 02:16:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-16 02:16:55,717 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 16 [2023-12-16 02:16:55,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:55,717 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-16 02:16:55,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-16 02:16:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-16 02:16:55,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:55,737 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] [2023-12-16 02:16:55,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 02:16:55,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:55,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:55,739 INFO L85 PathProgramCache]: Analyzing trace with hash -501064827, now seen corresponding path program 1 times [2023-12-16 02:16:55,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:55,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969142318] [2023-12-16 02:16:55,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:56,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969142318] [2023-12-16 02:16:56,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969142318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:56,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:56,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:16:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067802989] [2023-12-16 02:16:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:56,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:56,113 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:16:58,256 INFO L93 Difference]: Finished difference Result 2842 states and 4881 transitions. [2023-12-16 02:16:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:16:58,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-12-16 02:16:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:16:58,262 INFO L225 Difference]: With dead ends: 2842 [2023-12-16 02:16:58,262 INFO L226 Difference]: Without dead ends: 1862 [2023-12-16 02:16:58,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:58,264 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 409 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-16 02:16:58,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 493 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-16 02:16:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1862 states. [2023-12-16 02:16:58,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1862 to 1856. [2023-12-16 02:16:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4555256064690028) internal successors, (2700), 1855 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2700 transitions. [2023-12-16 02:16:58,296 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2700 transitions. Word has length 81 [2023-12-16 02:16:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:16:58,299 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2700 transitions. [2023-12-16 02:16:58,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:16:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2700 transitions. [2023-12-16 02:16:58,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 02:16:58,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:16:58,307 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] [2023-12-16 02:16:58,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 02:16:58,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:16:58,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:16:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash -261039756, now seen corresponding path program 1 times [2023-12-16 02:16:58,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:16:58,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530788013] [2023-12-16 02:16:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:16:58,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:16:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:16:58,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:16:58,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:16:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530788013] [2023-12-16 02:16:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530788013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:16:58,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:16:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 02:16:58,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138763933] [2023-12-16 02:16:58,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:16:58,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:16:58,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:16:58,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:16:58,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:16:58,446 INFO L87 Difference]: Start difference. First operand 1856 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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) [2023-12-16 02:17:00,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:00,161 INFO L93 Difference]: Finished difference Result 5424 states and 7894 transitions. [2023-12-16 02:17:00,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:00,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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 [2023-12-16 02:17:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:00,171 INFO L225 Difference]: With dead ends: 5424 [2023-12-16 02:17:00,171 INFO L226 Difference]: Without dead ends: 3569 [2023-12-16 02:17:00,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:00,184 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 387 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:00,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-16 02:17:00,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2023-12-16 02:17:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 2713. [2023-12-16 02:17:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2713 states, 2712 states have (on average 1.3160029498525074) internal successors, (3569), 2712 states have internal predecessors, (3569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:00,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2713 states to 2713 states and 3569 transitions. [2023-12-16 02:17:00,223 INFO L78 Accepts]: Start accepts. Automaton has 2713 states and 3569 transitions. Word has length 87 [2023-12-16 02:17:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:00,224 INFO L495 AbstractCegarLoop]: Abstraction has 2713 states and 3569 transitions. [2023-12-16 02:17:00,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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) [2023-12-16 02:17:00,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2713 states and 3569 transitions. [2023-12-16 02:17:00,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-16 02:17:00,228 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:00,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:00,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 02:17:00,229 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:00,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:00,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1110590500, now seen corresponding path program 1 times [2023-12-16 02:17:00,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:00,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117756160] [2023-12-16 02:17:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:00,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:00,586 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:17:00,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:00,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117756160] [2023-12-16 02:17:00,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117756160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:00,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 02:17:00,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441227928] [2023-12-16 02:17:00,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 02:17:00,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 02:17:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:17:00,590 INFO L87 Difference]: Start difference. First operand 2713 states and 3569 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:02,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:02,957 INFO L93 Difference]: Finished difference Result 7148 states and 9642 transitions. [2023-12-16 02:17:02,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:17:02,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 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 164 [2023-12-16 02:17:02,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:02,968 INFO L225 Difference]: With dead ends: 7148 [2023-12-16 02:17:02,968 INFO L226 Difference]: Without dead ends: 4436 [2023-12-16 02:17:02,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 02:17:02,971 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 599 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 3102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:02,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 899 Invalid, 3102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 02:17:02,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2023-12-16 02:17:03,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4423. [2023-12-16 02:17:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4423 states, 4422 states have (on average 1.2912709181365898) internal successors, (5710), 4422 states have internal predecessors, (5710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:03,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4423 states to 4423 states and 5710 transitions. [2023-12-16 02:17:03,069 INFO L78 Accepts]: Start accepts. Automaton has 4423 states and 5710 transitions. Word has length 164 [2023-12-16 02:17:03,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:03,071 INFO L495 AbstractCegarLoop]: Abstraction has 4423 states and 5710 transitions. [2023-12-16 02:17:03,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4423 states and 5710 transitions. [2023-12-16 02:17:03,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-16 02:17:03,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:03,072 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 02:17:03,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:03,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1240567507, now seen corresponding path program 1 times [2023-12-16 02:17:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608000196] [2023-12-16 02:17:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 29 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:17:03,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608000196] [2023-12-16 02:17:03,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608000196] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:17:03,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025138141] [2023-12-16 02:17:03,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:03,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:17:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:17:03,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:17:03,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 02:17:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:03,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:17:03,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:17:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 29 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:17:03,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:17:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:17:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025138141] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:17:03,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:17:03,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-16 02:17:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789744789] [2023-12-16 02:17:03,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:03,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:17:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:03,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:17:03,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:17:03,931 INFO L87 Difference]: Start difference. First operand 4423 states and 5710 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:07,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:07,333 INFO L93 Difference]: Finished difference Result 13991 states and 18565 transitions. [2023-12-16 02:17:07,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:17:07,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 170 [2023-12-16 02:17:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:07,359 INFO L225 Difference]: With dead ends: 13991 [2023-12-16 02:17:07,359 INFO L226 Difference]: Without dead ends: 8692 [2023-12-16 02:17:07,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-16 02:17:07,366 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 1122 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 1396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:07,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 149 Invalid, 3693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-16 02:17:07,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2023-12-16 02:17:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 8687. [2023-12-16 02:17:07,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8687 states, 8686 states have (on average 1.2230025328114207) internal successors, (10623), 8686 states have internal predecessors, (10623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:07,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8687 states to 8687 states and 10623 transitions. [2023-12-16 02:17:07,476 INFO L78 Accepts]: Start accepts. Automaton has 8687 states and 10623 transitions. Word has length 170 [2023-12-16 02:17:07,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:07,476 INFO L495 AbstractCegarLoop]: Abstraction has 8687 states and 10623 transitions. [2023-12-16 02:17:07,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:07,476 INFO L276 IsEmpty]: Start isEmpty. Operand 8687 states and 10623 transitions. [2023-12-16 02:17:07,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-16 02:17:07,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:07,478 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:07,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 02:17:07,683 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,SelfDestructingSolverStorable5 [2023-12-16 02:17:07,684 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:07,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:07,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1155905898, now seen corresponding path program 1 times [2023-12-16 02:17:07,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:07,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560954317] [2023-12-16 02:17:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:07,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:08,137 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 44 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 02:17:08,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560954317] [2023-12-16 02:17:08,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560954317] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:17:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121245095] [2023-12-16 02:17:08,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:08,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:17:08,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:17:08,139 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:17:08,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 02:17:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:08,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 02:17:08,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:17:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 170 proven. 73 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 02:17:08,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 02:17:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 02:17:08,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121245095] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-16 02:17:08,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-16 02:17:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2023-12-16 02:17:08,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218394176] [2023-12-16 02:17:08,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:08,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:17:08,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:17:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:17:08,529 INFO L87 Difference]: Start difference. First operand 8687 states and 10623 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:11,218 INFO L93 Difference]: Finished difference Result 24221 states and 29722 transitions. [2023-12-16 02:17:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:17:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 244 [2023-12-16 02:17:11,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:11,249 INFO L225 Difference]: With dead ends: 24221 [2023-12-16 02:17:11,249 INFO L226 Difference]: Without dead ends: 15535 [2023-12-16 02:17:11,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:17:11,267 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 837 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 2832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:11,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 191 Invalid, 2832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-16 02:17:11,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15535 states. [2023-12-16 02:17:11,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15535 to 15529. [2023-12-16 02:17:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15529 states, 15528 states have (on average 1.2101365275631117) internal successors, (18791), 15528 states have internal predecessors, (18791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15529 states to 15529 states and 18791 transitions. [2023-12-16 02:17:11,454 INFO L78 Accepts]: Start accepts. Automaton has 15529 states and 18791 transitions. Word has length 244 [2023-12-16 02:17:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:11,454 INFO L495 AbstractCegarLoop]: Abstraction has 15529 states and 18791 transitions. [2023-12-16 02:17:11,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 15529 states and 18791 transitions. [2023-12-16 02:17:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2023-12-16 02:17:11,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:11,458 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-16 02:17:11,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 02:17:11,663 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,SelfDestructingSolverStorable6 [2023-12-16 02:17:11,663 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:11,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:11,664 INFO L85 PathProgramCache]: Analyzing trace with hash 249654366, now seen corresponding path program 1 times [2023-12-16 02:17:11,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:11,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916075810] [2023-12-16 02:17:11,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:11,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-16 02:17:11,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:11,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916075810] [2023-12-16 02:17:11,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916075810] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:11,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:11,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778653137] [2023-12-16 02:17:11,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:11,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:11,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:11,919 INFO L87 Difference]: Start difference. First operand 15529 states and 18791 transitions. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:13,677 INFO L93 Difference]: Finished difference Result 40442 states and 49306 transitions. [2023-12-16 02:17:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:13,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 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 347 [2023-12-16 02:17:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:13,715 INFO L225 Difference]: With dead ends: 40442 [2023-12-16 02:17:13,716 INFO L226 Difference]: Without dead ends: 24912 [2023-12-16 02:17:13,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:13,729 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 433 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:13,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 349 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:17:13,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24912 states. [2023-12-16 02:17:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24912 to 22342. [2023-12-16 02:17:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22342 states, 22341 states have (on average 1.1988272682511973) internal successors, (26783), 22341 states have internal predecessors, (26783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:13,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22342 states to 22342 states and 26783 transitions. [2023-12-16 02:17:13,989 INFO L78 Accepts]: Start accepts. Automaton has 22342 states and 26783 transitions. Word has length 347 [2023-12-16 02:17:13,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:13,989 INFO L495 AbstractCegarLoop]: Abstraction has 22342 states and 26783 transitions. [2023-12-16 02:17:13,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:13,990 INFO L276 IsEmpty]: Start isEmpty. Operand 22342 states and 26783 transitions. [2023-12-16 02:17:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2023-12-16 02:17:13,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:13,994 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2023-12-16 02:17:13,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 02:17:13,994 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:13,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash 28551481, now seen corresponding path program 1 times [2023-12-16 02:17:13,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:13,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263710941] [2023-12-16 02:17:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:13,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-16 02:17:14,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:14,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263710941] [2023-12-16 02:17:14,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263710941] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:14,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:14,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377232957] [2023-12-16 02:17:14,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:14,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:14,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:14,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:14,210 INFO L87 Difference]: Start difference. First operand 22342 states and 26783 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:16,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:16,242 INFO L93 Difference]: Finished difference Result 53676 states and 64569 transitions. [2023-12-16 02:17:16,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:16,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 349 [2023-12-16 02:17:16,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:16,285 INFO L225 Difference]: With dead ends: 53676 [2023-12-16 02:17:16,286 INFO L226 Difference]: Without dead ends: 31335 [2023-12-16 02:17:16,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:16,308 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 428 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:16,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 728 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-16 02:17:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31335 states. [2023-12-16 02:17:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31335 to 30026. [2023-12-16 02:17:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30026 states, 30025 states have (on average 1.2049292256452955) internal successors, (36178), 30025 states have internal predecessors, (36178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30026 states to 30026 states and 36178 transitions. [2023-12-16 02:17:16,643 INFO L78 Accepts]: Start accepts. Automaton has 30026 states and 36178 transitions. Word has length 349 [2023-12-16 02:17:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:16,644 INFO L495 AbstractCegarLoop]: Abstraction has 30026 states and 36178 transitions. [2023-12-16 02:17:16,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 30026 states and 36178 transitions. [2023-12-16 02:17:16,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-12-16 02:17:16,649 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:16,649 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:16,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 02:17:16,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:16,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:16,650 INFO L85 PathProgramCache]: Analyzing trace with hash -914023340, now seen corresponding path program 1 times [2023-12-16 02:17:16,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:16,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791779582] [2023-12-16 02:17:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 420 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-16 02:17:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791779582] [2023-12-16 02:17:17,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791779582] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:17,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:17,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560912980] [2023-12-16 02:17:17,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:17,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:17,009 INFO L87 Difference]: Start difference. First operand 30026 states and 36178 transitions. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:18,855 INFO L93 Difference]: Finished difference Result 80909 states and 96295 transitions. [2023-12-16 02:17:18,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:18,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 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 350 [2023-12-16 02:17:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:18,919 INFO L225 Difference]: With dead ends: 80909 [2023-12-16 02:17:18,919 INFO L226 Difference]: Without dead ends: 49600 [2023-12-16 02:17:18,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:18,949 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 446 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:18,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 622 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-16 02:17:18,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49600 states. [2023-12-16 02:17:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49600 to 46190. [2023-12-16 02:17:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46190 states, 46189 states have (on average 1.1661651042455996) internal successors, (53864), 46189 states have internal predecessors, (53864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:19,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46190 states to 46190 states and 53864 transitions. [2023-12-16 02:17:19,671 INFO L78 Accepts]: Start accepts. Automaton has 46190 states and 53864 transitions. Word has length 350 [2023-12-16 02:17:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:19,672 INFO L495 AbstractCegarLoop]: Abstraction has 46190 states and 53864 transitions. [2023-12-16 02:17:19,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:19,672 INFO L276 IsEmpty]: Start isEmpty. Operand 46190 states and 53864 transitions. [2023-12-16 02:17:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2023-12-16 02:17:19,681 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:19,682 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-16 02:17:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 02:17:19,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:19,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash -948752101, now seen corresponding path program 1 times [2023-12-16 02:17:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:19,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882172799] [2023-12-16 02:17:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-16 02:17:20,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:20,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882172799] [2023-12-16 02:17:20,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882172799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:20,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:20,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:17:20,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577907839] [2023-12-16 02:17:20,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:20,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:17:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:20,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:17:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:17:20,105 INFO L87 Difference]: Start difference. First operand 46190 states and 53864 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:22,870 INFO L93 Difference]: Finished difference Result 124789 states and 145083 transitions. [2023-12-16 02:17:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:17:22,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 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 354 [2023-12-16 02:17:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:23,082 INFO L225 Difference]: With dead ends: 124789 [2023-12-16 02:17:23,083 INFO L226 Difference]: Without dead ends: 78600 [2023-12-16 02:17:23,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:17:23,120 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 835 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:23,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 178 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-16 02:17:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78600 states. [2023-12-16 02:17:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78600 to 75617. [2023-12-16 02:17:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75617 states, 75616 states have (on average 1.159040414727042) internal successors, (87642), 75616 states have internal predecessors, (87642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:24,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75617 states to 75617 states and 87642 transitions. [2023-12-16 02:17:24,074 INFO L78 Accepts]: Start accepts. Automaton has 75617 states and 87642 transitions. Word has length 354 [2023-12-16 02:17:24,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:24,074 INFO L495 AbstractCegarLoop]: Abstraction has 75617 states and 87642 transitions. [2023-12-16 02:17:24,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:24,075 INFO L276 IsEmpty]: Start isEmpty. Operand 75617 states and 87642 transitions. [2023-12-16 02:17:24,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2023-12-16 02:17:24,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:24,080 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:24,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 02:17:24,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:24,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash 862844167, now seen corresponding path program 1 times [2023-12-16 02:17:24,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:24,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842566384] [2023-12-16 02:17:24,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:24,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 317 proven. 82 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-12-16 02:17:24,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842566384] [2023-12-16 02:17:24,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842566384] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 02:17:24,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767322986] [2023-12-16 02:17:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:24,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:17:24,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 02:17:24,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 02:17:24,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 02:17:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:25,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 02:17:25,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 02:17:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2023-12-16 02:17:25,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 02:17:25,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767322986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:25,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 02:17:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-16 02:17:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706623998] [2023-12-16 02:17:25,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:25,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:25,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:25,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:17:25,779 INFO L87 Difference]: Start difference. First operand 75617 states and 87642 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:27,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:27,756 INFO L93 Difference]: Finished difference Result 171698 states and 198293 transitions. [2023-12-16 02:17:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:27,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 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 369 [2023-12-16 02:17:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:27,880 INFO L225 Difference]: With dead ends: 171698 [2023-12-16 02:17:27,880 INFO L226 Difference]: Without dead ends: 95653 [2023-12-16 02:17:27,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 02:17:27,919 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 478 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:27,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 741 Invalid, 1382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:17:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95653 states. [2023-12-16 02:17:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95653 to 95638. [2023-12-16 02:17:29,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95638 states, 95637 states have (on average 1.1269905998724343) internal successors, (107782), 95637 states have internal predecessors, (107782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95638 states to 95638 states and 107782 transitions. [2023-12-16 02:17:29,261 INFO L78 Accepts]: Start accepts. Automaton has 95638 states and 107782 transitions. Word has length 369 [2023-12-16 02:17:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:29,262 INFO L495 AbstractCegarLoop]: Abstraction has 95638 states and 107782 transitions. [2023-12-16 02:17:29,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 95638 states and 107782 transitions. [2023-12-16 02:17:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-12-16 02:17:29,277 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:29,277 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:29,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 02:17:29,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 02:17:29,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:29,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2026609877, now seen corresponding path program 1 times [2023-12-16 02:17:29,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:29,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505253465] [2023-12-16 02:17:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:29,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-12-16 02:17:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:29,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505253465] [2023-12-16 02:17:29,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505253465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:29,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:29,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:29,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814270780] [2023-12-16 02:17:29,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:29,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:29,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:29,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:29,949 INFO L87 Difference]: Start difference. First operand 95638 states and 107782 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:32,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:32,080 INFO L93 Difference]: Finished difference Result 199356 states and 224701 transitions. [2023-12-16 02:17:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 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 495 [2023-12-16 02:17:32,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:32,228 INFO L225 Difference]: With dead ends: 199356 [2023-12-16 02:17:32,228 INFO L226 Difference]: Without dead ends: 103288 [2023-12-16 02:17:32,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:32,419 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 502 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:32,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 677 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-16 02:17:32,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103288 states. [2023-12-16 02:17:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103288 to 89633. [2023-12-16 02:17:33,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89633 states, 89632 states have (on average 1.1228913780792573) internal successors, (100647), 89632 states have internal predecessors, (100647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:33,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89633 states to 89633 states and 100647 transitions. [2023-12-16 02:17:33,611 INFO L78 Accepts]: Start accepts. Automaton has 89633 states and 100647 transitions. Word has length 495 [2023-12-16 02:17:33,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:33,628 INFO L495 AbstractCegarLoop]: Abstraction has 89633 states and 100647 transitions. [2023-12-16 02:17:33,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:33,628 INFO L276 IsEmpty]: Start isEmpty. Operand 89633 states and 100647 transitions. [2023-12-16 02:17:33,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2023-12-16 02:17:33,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:33,660 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:33,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 02:17:33,661 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:33,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash 636791140, now seen corresponding path program 1 times [2023-12-16 02:17:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:33,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654024438] [2023-12-16 02:17:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:33,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:34,208 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-12-16 02:17:34,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:34,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654024438] [2023-12-16 02:17:34,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654024438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:34,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:34,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:17:34,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179265631] [2023-12-16 02:17:34,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:34,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:17:34,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:34,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:17:34,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:17:34,211 INFO L87 Difference]: Start difference. First operand 89633 states and 100647 transitions. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:37,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:37,014 INFO L93 Difference]: Finished difference Result 204843 states and 229214 transitions. [2023-12-16 02:17:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:17:37,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 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 504 [2023-12-16 02:17:37,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:37,156 INFO L225 Difference]: With dead ends: 204843 [2023-12-16 02:17:37,156 INFO L226 Difference]: Without dead ends: 113936 [2023-12-16 02:17:37,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:17:37,202 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 778 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:37,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 227 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 02:17:37,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113936 states. [2023-12-16 02:17:38,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113936 to 109676. [2023-12-16 02:17:38,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109676 states, 109675 states have (on average 1.1174287668110325) internal successors, (122554), 109675 states have internal predecessors, (122554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:38,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109676 states to 109676 states and 122554 transitions. [2023-12-16 02:17:38,812 INFO L78 Accepts]: Start accepts. Automaton has 109676 states and 122554 transitions. Word has length 504 [2023-12-16 02:17:38,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:38,812 INFO L495 AbstractCegarLoop]: Abstraction has 109676 states and 122554 transitions. [2023-12-16 02:17:38,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 109676 states and 122554 transitions. [2023-12-16 02:17:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-12-16 02:17:38,861 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:38,862 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 02:17:38,862 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:38,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash 590090844, now seen corresponding path program 1 times [2023-12-16 02:17:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:38,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143161122] [2023-12-16 02:17:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-12-16 02:17:39,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:39,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143161122] [2023-12-16 02:17:39,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143161122] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:39,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:39,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 02:17:39,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046880490] [2023-12-16 02:17:39,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:39,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 02:17:39,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:39,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 02:17:39,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:39,363 INFO L87 Difference]: Start difference. First operand 109676 states and 122554 transitions. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:41,367 INFO L93 Difference]: Finished difference Result 232120 states and 259348 transitions. [2023-12-16 02:17:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 02:17:41,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 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 508 [2023-12-16 02:17:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:41,510 INFO L225 Difference]: With dead ends: 232120 [2023-12-16 02:17:41,510 INFO L226 Difference]: Without dead ends: 122445 [2023-12-16 02:17:41,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 02:17:41,561 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 380 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:41,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 305 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-16 02:17:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122445 states. [2023-12-16 02:17:42,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122445 to 119462. [2023-12-16 02:17:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119462 states, 119461 states have (on average 1.1157030327889437) internal successors, (133283), 119461 states have internal predecessors, (133283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119462 states to 119462 states and 133283 transitions. [2023-12-16 02:17:43,055 INFO L78 Accepts]: Start accepts. Automaton has 119462 states and 133283 transitions. Word has length 508 [2023-12-16 02:17:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 02:17:43,055 INFO L495 AbstractCegarLoop]: Abstraction has 119462 states and 133283 transitions. [2023-12-16 02:17:43,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 119462 states and 133283 transitions. [2023-12-16 02:17:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-12-16 02:17:43,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 02:17:43,070 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:43,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-16 02:17:43,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 02:17:43,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 02:17:43,071 INFO L85 PathProgramCache]: Analyzing trace with hash -503392866, now seen corresponding path program 1 times [2023-12-16 02:17:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 02:17:43,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472430809] [2023-12-16 02:17:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 02:17:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 02:17:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 02:17:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-16 02:17:43,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 02:17:43,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472430809] [2023-12-16 02:17:43,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472430809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 02:17:43,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 02:17:43,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 02:17:43,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071371701] [2023-12-16 02:17:43,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 02:17:43,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 02:17:43,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 02:17:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 02:17:43,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:17:43,851 INFO L87 Difference]: Start difference. First operand 119462 states and 133283 transitions. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:46,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 02:17:46,862 INFO L93 Difference]: Finished difference Result 260659 states and 290114 transitions. [2023-12-16 02:17:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 02:17:46,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 0 states have call successors, (0), 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 509 [2023-12-16 02:17:46,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 02:17:47,014 INFO L225 Difference]: With dead ends: 260659 [2023-12-16 02:17:47,014 INFO L226 Difference]: Without dead ends: 139923 [2023-12-16 02:17:47,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 02:17:47,077 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 797 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 2688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-16 02:17:47,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 224 Invalid, 2688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-16 02:17:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139923 states. Received shutdown request... [2023-12-16 02:17:48,344 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 02:17:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139923 to 119462. [2023-12-16 02:17:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119462 states, 119461 states have (on average 1.1157030327889437) internal successors, (133283), 119461 states have internal predecessors, (133283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 02:17:48,533 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 02:17:48,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-16 02:17:48,534 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-16 02:17:48,541 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 02:17:48,551 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 02:17:48,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:17:48 BoogieIcfgContainer [2023-12-16 02:17:48,555 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 02:17:48,557 INFO L158 Benchmark]: Toolchain (without parser) took 60002.41ms. Allocated memory was 190.8MB in the beginning and 5.7GB in the end (delta: 5.5GB). Free memory was 133.5MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.4GB. Max. memory is 8.0GB. [2023-12-16 02:17:48,557 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory was 138.8MB in the beginning and 138.6MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 02:17:48,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1038.82ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 133.5MB in the beginning and 111.5MB in the end (delta: 22.0MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2023-12-16 02:17:48,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 270.67ms. Allocated memory is still 229.6MB. Free memory was 111.5MB in the beginning and 142.3MB in the end (delta: -30.7MB). Peak memory consumption was 53.7MB. Max. memory is 8.0GB. [2023-12-16 02:17:48,559 INFO L158 Benchmark]: Boogie Preprocessor took 356.81ms. Allocated memory is still 229.6MB. Free memory was 142.3MB in the beginning and 114.1MB in the end (delta: 28.2MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. [2023-12-16 02:17:48,559 INFO L158 Benchmark]: RCFGBuilder took 2677.70ms. Allocated memory was 229.6MB in the beginning and 380.6MB in the end (delta: 151.0MB). Free memory was 114.1MB in the beginning and 210.8MB in the end (delta: -96.7MB). Peak memory consumption was 141.0MB. Max. memory is 8.0GB. [2023-12-16 02:17:48,559 INFO L158 Benchmark]: TraceAbstraction took 55653.01ms. Allocated memory was 380.6MB in the beginning and 5.7GB in the end (delta: 5.3GB). Free memory was 209.8MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-16 02:17:48,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory was 138.8MB in the beginning and 138.6MB in the end (delta: 154.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1038.82ms. Allocated memory was 190.8MB in the beginning and 229.6MB in the end (delta: 38.8MB). Free memory was 133.5MB in the beginning and 111.5MB in the end (delta: 22.0MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 270.67ms. Allocated memory is still 229.6MB. Free memory was 111.5MB in the beginning and 142.3MB in the end (delta: -30.7MB). Peak memory consumption was 53.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 356.81ms. Allocated memory is still 229.6MB. Free memory was 142.3MB in the beginning and 114.1MB in the end (delta: 28.2MB). Peak memory consumption was 65.9MB. Max. memory is 8.0GB. * RCFGBuilder took 2677.70ms. Allocated memory was 229.6MB in the beginning and 380.6MB in the end (delta: 151.0MB). Free memory was 114.1MB in the beginning and 210.8MB in the end (delta: -96.7MB). Peak memory consumption was 141.0MB. Max. memory is 8.0GB. * TraceAbstraction took 55653.01ms. Allocated memory was 380.6MB in the beginning and 5.7GB in the end (delta: 5.3GB). Free memory was 209.8MB in the beginning and 3.4GB in the end (delta: -3.2GB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 69). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 55.6s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 36.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8925 SdHoareTripleChecker+Valid, 30.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8925 mSDsluCounter, 7546 SdHoareTripleChecker+Invalid, 25.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1062 mSDsCounter, 6306 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25191 IncrementalHoareTripleChecker+Invalid, 31497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6306 mSolverCounterUnsat, 6484 mSDtfsCounter, 25191 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1244 GetRequests, 1213 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119462occurred in iteration=15, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 9.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 32087 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 5346 NumberOfCodeBlocks, 5346 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 5739 ConstructedInterpolants, 0 QuantifiedInterpolants, 14716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1158 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 21 InterpolantComputations, 16 PerfectInterpolantSequences, 5996/6505 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown