/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 19:59:48,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 19:59:48,850 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-16 19:59:48,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 19:59:48,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 19:59:48,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 19:59:48,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 19:59:48,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 19:59:48,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 19:59:48,872 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 19:59:48,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 19:59:48,872 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 19:59:48,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 19:59:48,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 19:59:48,873 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 19:59:48,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 19:59:48,874 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 19:59:48,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 19:59:48,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 19:59:48,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 19:59:48,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 19:59:48,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 19:59:48,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 19:59:48,881 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 19:59:48,882 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 19:59:48,882 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 19:59:48,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 19:59:48,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 19:59:48,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 19:59:48,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:59:48,884 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 19:59:48,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 19:59:48,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 19:59:48,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 19:59:48,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 19:59:48,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 19:59:48,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 19:59:48,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 19:59:48,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 19:59:48,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 19:59:48,885 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-16 19:59:49,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 19:59:49,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 19:59:49,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 19:59:49,095 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 19:59:49,096 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 19:59:49,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2023-12-16 19:59:50,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 19:59:50,301 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 19:59:50,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2023-12-16 19:59:50,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ab4ac99/79898922f5f841119ce9f099b684e6c7/FLAG406ffa797 [2023-12-16 19:59:50,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4ab4ac99/79898922f5f841119ce9f099b684e6c7 [2023-12-16 19:59:50,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 19:59:50,328 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 19:59:50,331 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 19:59:50,331 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 19:59:50,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 19:59:50,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,336 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641e2ae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50, skipping insertion in model container [2023-12-16 19:59:50,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,375 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 19:59:50,517 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2023-12-16 19:59:50,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:59:50,612 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 19:59:50,620 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c[1266,1279] [2023-12-16 19:59:50,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 19:59:50,684 INFO L206 MainTranslator]: Completed translation [2023-12-16 19:59:50,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50 WrapperNode [2023-12-16 19:59:50,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 19:59:50,686 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 19:59:50,686 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 19:59:50,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 19:59:50,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,708 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,772 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 816 [2023-12-16 19:59:50,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 19:59:50,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 19:59:50,773 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 19:59:50,773 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 19:59:50,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,810 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,846 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 19:59:50,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,873 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,876 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,894 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 19:59:50,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 19:59:50,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 19:59:50,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 19:59:50,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (1/1) ... [2023-12-16 19:59:50,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 19:59:50,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:59:50,951 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 19:59:50,963 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 19:59:50,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 19:59:50,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 19:59:50,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 19:59:50,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 19:59:51,139 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 19:59:51,141 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 19:59:51,632 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 19:59:51,663 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 19:59:51,663 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 19:59:51,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:59:51 BoogieIcfgContainer [2023-12-16 19:59:51,665 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 19:59:51,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 19:59:51,667 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 19:59:51,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 19:59:51,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 07:59:50" (1/3) ... [2023-12-16 19:59:51,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6fe605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:59:51, skipping insertion in model container [2023-12-16 19:59:51,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 07:59:50" (2/3) ... [2023-12-16 19:59:51,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6fe605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 07:59:51, skipping insertion in model container [2023-12-16 19:59:51,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 07:59:51" (3/3) ... [2023-12-16 19:59:51,671 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p06.c [2023-12-16 19:59:51,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 19:59:51,683 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 19:59:51,723 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 19:59:51,728 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;@6e8072bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 19:59:51,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 19:59:51,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.6666666666666667) internal successors, (175), 106 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 19:59:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-16 19:59:51,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:51,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:51,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:51,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:51,747 INFO L85 PathProgramCache]: Analyzing trace with hash -323497386, now seen corresponding path program 1 times [2023-12-16 19:59:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:51,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34878809] [2023-12-16 19:59:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:52,285 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 19:59:52,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:52,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34878809] [2023-12-16 19:59:52,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34878809] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:52,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:52,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:59:52,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988819308] [2023-12-16 19:59:52,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:52,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:59:52,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:52,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:59:52,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:59:52,320 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.6666666666666667) internal successors, (175), 106 states have internal predecessors, (175), 0 states have call successors, (0), 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 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 19:59:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:52,383 INFO L93 Difference]: Finished difference Result 174 states and 286 transitions. [2023-12-16 19:59:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:59:52,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2023-12-16 19:59:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:52,392 INFO L225 Difference]: With dead ends: 174 [2023-12-16 19:59:52,392 INFO L226 Difference]: Without dead ends: 107 [2023-12-16 19:59:52,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:59:52,398 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:52,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 499 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:59:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-12-16 19:59:52,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-12-16 19:59:52,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.6320754716981132) internal successors, (173), 106 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 19:59:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 173 transitions. [2023-12-16 19:59:52,424 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 173 transitions. Word has length 40 [2023-12-16 19:59:52,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:52,425 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 173 transitions. [2023-12-16 19:59:52,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 19:59:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 173 transitions. [2023-12-16 19:59:52,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-16 19:59:52,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:52,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:52,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 19:59:52,426 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:52,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:52,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1436699628, now seen corresponding path program 1 times [2023-12-16 19:59:52,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:52,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843423261] [2023-12-16 19:59:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:52,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:52,565 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 19:59:52,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843423261] [2023-12-16 19:59:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843423261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:52,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:52,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:59:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843079456] [2023-12-16 19:59:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:52,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:59:52,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:59:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:59:52,572 INFO L87 Difference]: Start difference. First operand 107 states and 173 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 19:59:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:52,603 INFO L93 Difference]: Finished difference Result 177 states and 284 transitions. [2023-12-16 19:59:52,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:59:52,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-12-16 19:59:52,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:52,606 INFO L225 Difference]: With dead ends: 177 [2023-12-16 19:59:52,606 INFO L226 Difference]: Without dead ends: 110 [2023-12-16 19:59:52,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:59:52,607 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:52,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 497 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:59:52,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-12-16 19:59:52,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2023-12-16 19:59:52,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.6203703703703705) internal successors, (175), 108 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 19:59:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 175 transitions. [2023-12-16 19:59:52,613 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 175 transitions. Word has length 41 [2023-12-16 19:59:52,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:52,614 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 175 transitions. [2023-12-16 19:59:52,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 19:59:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 175 transitions. [2023-12-16 19:59:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 19:59:52,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:52,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:52,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 19:59:52,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:52,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1800235218, now seen corresponding path program 1 times [2023-12-16 19:59:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:52,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577151770] [2023-12-16 19:59:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:52,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:52,944 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 19:59:52,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577151770] [2023-12-16 19:59:52,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577151770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:52,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:52,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:59:52,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268220094] [2023-12-16 19:59:52,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:52,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 19:59:52,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:52,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 19:59:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-16 19:59:52,949 INFO L87 Difference]: Start difference. First operand 109 states and 175 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 19:59:53,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:53,006 INFO L93 Difference]: Finished difference Result 185 states and 295 transitions. [2023-12-16 19:59:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 19:59:53,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2023-12-16 19:59:53,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:53,007 INFO L225 Difference]: With dead ends: 185 [2023-12-16 19:59:53,007 INFO L226 Difference]: Without dead ends: 116 [2023-12-16 19:59:53,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:59:53,008 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 205 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:53,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 320 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:59:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-12-16 19:59:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2023-12-16 19:59:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.6111111111111112) internal successors, (174), 108 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 19:59:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 174 transitions. [2023-12-16 19:59:53,014 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 174 transitions. Word has length 42 [2023-12-16 19:59:53,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:53,014 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 174 transitions. [2023-12-16 19:59:53,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 19:59:53,015 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 174 transitions. [2023-12-16 19:59:53,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 19:59:53,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:53,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:53,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 19:59:53,016 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:53,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1625402618, now seen corresponding path program 1 times [2023-12-16 19:59:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:53,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078250219] [2023-12-16 19:59:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:53,299 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 19:59:53,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:53,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078250219] [2023-12-16 19:59:53,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078250219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:53,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:53,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:59:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572030296] [2023-12-16 19:59:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:53,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:59:53,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:53,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:59:53,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:59:53,302 INFO L87 Difference]: Start difference. First operand 109 states and 174 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:59:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:53,503 INFO L93 Difference]: Finished difference Result 325 states and 511 transitions. [2023-12-16 19:59:53,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 19:59:53,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-16 19:59:53,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:53,510 INFO L225 Difference]: With dead ends: 325 [2023-12-16 19:59:53,510 INFO L226 Difference]: Without dead ends: 256 [2023-12-16 19:59:53,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2023-12-16 19:59:53,518 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 819 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:53,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1009 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:59:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-16 19:59:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 117. [2023-12-16 19:59:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.5948275862068966) internal successors, (185), 116 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 19:59:53,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 185 transitions. [2023-12-16 19:59:53,525 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 185 transitions. Word has length 43 [2023-12-16 19:59:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:53,526 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 185 transitions. [2023-12-16 19:59:53,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:59:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 185 transitions. [2023-12-16 19:59:53,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 19:59:53,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:53,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:53,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 19:59:53,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:53,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:53,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1232375608, now seen corresponding path program 1 times [2023-12-16 19:59:53,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:53,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264131435] [2023-12-16 19:59:53,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:53,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:59:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264131435] [2023-12-16 19:59:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264131435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:53,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:53,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-16 19:59:53,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811299165] [2023-12-16 19:59:53,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:53,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 19:59:53,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:53,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 19:59:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-16 19:59:53,974 INFO L87 Difference]: Start difference. First operand 117 states and 185 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:59:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:54,240 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2023-12-16 19:59:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 19:59:54,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-16 19:59:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:54,242 INFO L225 Difference]: With dead ends: 272 [2023-12-16 19:59:54,242 INFO L226 Difference]: Without dead ends: 195 [2023-12-16 19:59:54,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-16 19:59:54,243 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 556 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:54,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 924 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 19:59:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-16 19:59:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2023-12-16 19:59:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.588235294117647) internal successors, (189), 119 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 19:59:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 189 transitions. [2023-12-16 19:59:54,249 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 189 transitions. Word has length 43 [2023-12-16 19:59:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:54,249 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 189 transitions. [2023-12-16 19:59:54,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:59:54,250 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 189 transitions. [2023-12-16 19:59:54,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 19:59:54,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:54,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:54,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 19:59:54,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:54,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:54,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1287584326, now seen corresponding path program 1 times [2023-12-16 19:59:54,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:54,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911675707] [2023-12-16 19:59:54,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:54,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:54,469 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 19:59:54,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:54,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911675707] [2023-12-16 19:59:54,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911675707] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:54,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:54,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:59:54,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245367642] [2023-12-16 19:59:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:54,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:59:54,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:59:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:59:54,471 INFO L87 Difference]: Start difference. First operand 120 states and 189 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:59:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:54,524 INFO L93 Difference]: Finished difference Result 281 states and 435 transitions. [2023-12-16 19:59:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 19:59:54,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2023-12-16 19:59:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:54,526 INFO L225 Difference]: With dead ends: 281 [2023-12-16 19:59:54,526 INFO L226 Difference]: Without dead ends: 201 [2023-12-16 19:59:54,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:59:54,529 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 326 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:54,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 517 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:59:54,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-16 19:59:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 126. [2023-12-16 19:59:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.56) internal successors, (195), 125 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 19:59:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 195 transitions. [2023-12-16 19:59:54,549 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 195 transitions. Word has length 43 [2023-12-16 19:59:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:54,551 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 195 transitions. [2023-12-16 19:59:54,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 19:59:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 195 transitions. [2023-12-16 19:59:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 19:59:54,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:54,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:54,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 19:59:54,552 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:54,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1739876872, now seen corresponding path program 1 times [2023-12-16 19:59:54,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:54,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817801586] [2023-12-16 19:59:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:54,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:54,658 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 19:59:54,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:54,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817801586] [2023-12-16 19:59:54,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817801586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:54,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:54,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:59:54,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235720335] [2023-12-16 19:59:54,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:54,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:59:54,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:59:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:59:54,660 INFO L87 Difference]: Start difference. First operand 126 states and 195 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 19:59:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:54,718 INFO L93 Difference]: Finished difference Result 287 states and 437 transitions. [2023-12-16 19:59:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:59:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-16 19:59:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:54,720 INFO L225 Difference]: With dead ends: 287 [2023-12-16 19:59:54,720 INFO L226 Difference]: Without dead ends: 201 [2023-12-16 19:59:54,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:59:54,721 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 342 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:54,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 472 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:59:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-16 19:59:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 133. [2023-12-16 19:59:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5454545454545454) internal successors, (204), 132 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 19:59:54,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 204 transitions. [2023-12-16 19:59:54,731 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 204 transitions. Word has length 44 [2023-12-16 19:59:54,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:54,731 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 204 transitions. [2023-12-16 19:59:54,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 19:59:54,732 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 204 transitions. [2023-12-16 19:59:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-16 19:59:54,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:54,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:54,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 19:59:54,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:54,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:54,736 INFO L85 PathProgramCache]: Analyzing trace with hash 316532708, now seen corresponding path program 1 times [2023-12-16 19:59:54,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:54,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138119237] [2023-12-16 19:59:54,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:54,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:54,831 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 19:59:54,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:54,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138119237] [2023-12-16 19:59:54,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138119237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:54,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:54,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:59:54,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334388582] [2023-12-16 19:59:54,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:54,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:59:54,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:54,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:59:54,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:59:54,832 INFO L87 Difference]: Start difference. First operand 133 states and 204 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 19:59:54,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:54,895 INFO L93 Difference]: Finished difference Result 274 states and 418 transitions. [2023-12-16 19:59:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:59:54,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2023-12-16 19:59:54,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:54,897 INFO L225 Difference]: With dead ends: 274 [2023-12-16 19:59:54,897 INFO L226 Difference]: Without dead ends: 185 [2023-12-16 19:59:54,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:59:54,898 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 322 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:54,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 469 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 19:59:54,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-16 19:59:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 130. [2023-12-16 19:59:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.5426356589147288) internal successors, (199), 129 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:59:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 199 transitions. [2023-12-16 19:59:54,902 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 199 transitions. Word has length 44 [2023-12-16 19:59:54,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:54,903 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 199 transitions. [2023-12-16 19:59:54,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states 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 19:59:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 199 transitions. [2023-12-16 19:59:54,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-16 19:59:54,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:54,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:54,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 19:59:54,906 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:54,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:54,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1309275010, now seen corresponding path program 1 times [2023-12-16 19:59:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424332200] [2023-12-16 19:59:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:54,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:59:55,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:55,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424332200] [2023-12-16 19:59:55,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424332200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 19:59:55,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985949249] [2023-12-16 19:59:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:55,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:59:55,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 19:59:55,701 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 19:59:55,716 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 19:59:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:55,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-16 19:59:55,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 19:59:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:59:56,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 19:59:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985949249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:56,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 19:59:56,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2023-12-16 19:59:56,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346149884] [2023-12-16 19:59:56,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:56,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-16 19:59:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-16 19:59:56,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-16 19:59:56,287 INFO L87 Difference]: Start difference. First operand 130 states and 199 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:59:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:56,668 INFO L93 Difference]: Finished difference Result 271 states and 413 transitions. [2023-12-16 19:59:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:59:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2023-12-16 19:59:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:56,671 INFO L225 Difference]: With dead ends: 271 [2023-12-16 19:59:56,671 INFO L226 Difference]: Without dead ends: 185 [2023-12-16 19:59:56,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-16 19:59:56,672 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 281 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:56,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 202 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 19:59:56,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-16 19:59:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 151. [2023-12-16 19:59:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.5066666666666666) internal successors, (226), 150 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 19:59:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 226 transitions. [2023-12-16 19:59:56,678 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 226 transitions. Word has length 88 [2023-12-16 19:59:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:56,678 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 226 transitions. [2023-12-16 19:59:56,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:59:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 226 transitions. [2023-12-16 19:59:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-16 19:59:56,679 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:56,679 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:56,687 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 19:59:56,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 19:59:56,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:56,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash 727336104, now seen corresponding path program 1 times [2023-12-16 19:59:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26803499] [2023-12-16 19:59:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:59:57,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:57,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26803499] [2023-12-16 19:59:57,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26803499] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:57,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:57,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:59:57,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153451398] [2023-12-16 19:59:57,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:57,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:59:57,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:57,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:59:57,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:59:57,636 INFO L87 Difference]: Start difference. First operand 151 states and 226 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:59:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:57,955 INFO L93 Difference]: Finished difference Result 279 states and 422 transitions. [2023-12-16 19:59:57,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:59:57,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2023-12-16 19:59:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:57,957 INFO L225 Difference]: With dead ends: 279 [2023-12-16 19:59:57,957 INFO L226 Difference]: Without dead ends: 193 [2023-12-16 19:59:57,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:59:57,957 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 296 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:57,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 370 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 19:59:57,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-16 19:59:57,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 165. [2023-12-16 19:59:57,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5121951219512195) internal successors, (248), 164 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 19:59:57,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2023-12-16 19:59:57,962 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 89 [2023-12-16 19:59:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:57,963 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2023-12-16 19:59:57,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:59:57,963 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2023-12-16 19:59:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-16 19:59:57,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:57,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:57,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 19:59:57,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:57,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash 490902716, now seen corresponding path program 1 times [2023-12-16 19:59:57,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:57,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996097937] [2023-12-16 19:59:57,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:57,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:59:58,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:58,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996097937] [2023-12-16 19:59:58,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996097937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:58,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:58,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 19:59:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449807493] [2023-12-16 19:59:58,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:58,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 19:59:58,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 19:59:58,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 19:59:58,606 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:59:58,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:58,816 INFO L93 Difference]: Finished difference Result 296 states and 447 transitions. [2023-12-16 19:59:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 19:59:58,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-16 19:59:58,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:58,817 INFO L225 Difference]: With dead ends: 296 [2023-12-16 19:59:58,817 INFO L226 Difference]: Without dead ends: 185 [2023-12-16 19:59:58,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-16 19:59:58,818 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 325 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:58,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 515 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:59:58,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-16 19:59:58,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2023-12-16 19:59:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5060975609756098) internal successors, (247), 164 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 19:59:58,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2023-12-16 19:59:58,823 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 90 [2023-12-16 19:59:58,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:58,823 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2023-12-16 19:59:58,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 19:59:58,823 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2023-12-16 19:59:58,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 19:59:58,823 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:58,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:58,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 19:59:58,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:58,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:58,824 INFO L85 PathProgramCache]: Analyzing trace with hash 546996, now seen corresponding path program 1 times [2023-12-16 19:59:58,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:58,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825118846] [2023-12-16 19:59:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 19:59:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 19:59:59,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 19:59:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825118846] [2023-12-16 19:59:59,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825118846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 19:59:59,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 19:59:59,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 19:59:59,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589583867] [2023-12-16 19:59:59,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 19:59:59,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 19:59:59,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 19:59:59,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 19:59:59,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 19:59:59,439 INFO L87 Difference]: Start difference. First operand 165 states and 247 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:59:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 19:59:59,700 INFO L93 Difference]: Finished difference Result 294 states and 444 transitions. [2023-12-16 19:59:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 19:59:59,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-16 19:59:59,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 19:59:59,702 INFO L225 Difference]: With dead ends: 294 [2023-12-16 19:59:59,702 INFO L226 Difference]: Without dead ends: 185 [2023-12-16 19:59:59,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-16 19:59:59,702 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 299 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 19:59:59,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 150 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 19:59:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-16 19:59:59,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 165. [2023-12-16 19:59:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5) internal successors, (246), 164 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 19:59:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 246 transitions. [2023-12-16 19:59:59,707 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 246 transitions. Word has length 91 [2023-12-16 19:59:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 19:59:59,707 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 246 transitions. [2023-12-16 19:59:59,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 19:59:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 246 transitions. [2023-12-16 19:59:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 19:59:59,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 19:59:59,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 19:59:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 19:59:59,708 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 19:59:59,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 19:59:59,708 INFO L85 PathProgramCache]: Analyzing trace with hash -14971722, now seen corresponding path program 1 times [2023-12-16 19:59:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 19:59:59,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991241728] [2023-12-16 19:59:59,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 19:59:59,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 19:59:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:00,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991241728] [2023-12-16 20:00:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991241728] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:00:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762654849] [2023-12-16 20:00:00,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:00,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:00,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:00:00,635 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 20:00:00,648 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 20:00:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:00,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 20:00:00,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:00:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:01,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:00:01,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762654849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:01,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:00:01,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 14 [2023-12-16 20:00:01,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853897758] [2023-12-16 20:00:01,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:01,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:00:01,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:01,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:00:01,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:00:01,132 INFO L87 Difference]: Start difference. First operand 165 states and 246 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 20:00:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:01,979 INFO L93 Difference]: Finished difference Result 426 states and 651 transitions. [2023-12-16 20:00:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 20:00:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-16 20:00:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:01,981 INFO L225 Difference]: With dead ends: 426 [2023-12-16 20:00:01,982 INFO L226 Difference]: Without dead ends: 340 [2023-12-16 20:00:01,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-12-16 20:00:01,983 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 652 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:01,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 503 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 20:00:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-12-16 20:00:01,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 225. [2023-12-16 20:00:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.5178571428571428) internal successors, (340), 224 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 20:00:01,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 340 transitions. [2023-12-16 20:00:01,990 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 340 transitions. Word has length 91 [2023-12-16 20:00:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:01,990 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 340 transitions. [2023-12-16 20:00:01,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 20:00:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 340 transitions. [2023-12-16 20:00:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 20:00:01,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:01,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:02,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 20:00:02,200 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,SelfDestructingSolverStorable12 [2023-12-16 20:00:02,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:02,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1438315886, now seen corresponding path program 1 times [2023-12-16 20:00:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266729856] [2023-12-16 20:00:02,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:02,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:03,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266729856] [2023-12-16 20:00:03,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266729856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:03,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:00:03,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764261081] [2023-12-16 20:00:03,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:03,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:00:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:00:03,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:00:03,442 INFO L87 Difference]: Start difference. First operand 225 states and 340 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 20:00:03,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:03,958 INFO L93 Difference]: Finished difference Result 418 states and 630 transitions. [2023-12-16 20:00:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:00:03,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2023-12-16 20:00:03,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:03,960 INFO L225 Difference]: With dead ends: 418 [2023-12-16 20:00:03,960 INFO L226 Difference]: Without dead ends: 274 [2023-12-16 20:00:03,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-12-16 20:00:03,961 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 522 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:03,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 622 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 20:00:03,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-16 20:00:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 208. [2023-12-16 20:00:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5169082125603865) internal successors, (314), 207 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 20:00:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 314 transitions. [2023-12-16 20:00:03,968 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 314 transitions. Word has length 91 [2023-12-16 20:00:03,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:03,968 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 314 transitions. [2023-12-16 20:00:03,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states 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 20:00:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 314 transitions. [2023-12-16 20:00:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 20:00:03,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:03,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:03,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 20:00:03,969 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:03,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash -414823866, now seen corresponding path program 1 times [2023-12-16 20:00:03,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:03,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317580938] [2023-12-16 20:00:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:04,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317580938] [2023-12-16 20:00:04,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317580938] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:00:04,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283663276] [2023-12-16 20:00:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:04,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:04,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:00:04,828 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 20:00:04,856 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 20:00:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:05,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-16 20:00:05,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:00:05,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:05,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 20:00:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:06,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283663276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 20:00:06,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 20:00:06,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 16] total 35 [2023-12-16 20:00:06,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809982557] [2023-12-16 20:00:06,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 20:00:06,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-16 20:00:06,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:06,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-16 20:00:06,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1044, Unknown=0, NotChecked=0, Total=1260 [2023-12-16 20:00:06,367 INFO L87 Difference]: Start difference. First operand 208 states and 314 transitions. Second operand has 36 states, 36 states have (on average 7.027777777777778) internal successors, (253), 35 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 20:00:11,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:11,023 INFO L93 Difference]: Finished difference Result 883 states and 1381 transitions. [2023-12-16 20:00:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-16 20:00:11,024 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.027777777777778) internal successors, (253), 35 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-16 20:00:11,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:11,027 INFO L225 Difference]: With dead ends: 883 [2023-12-16 20:00:11,027 INFO L226 Difference]: Without dead ends: 756 [2023-12-16 20:00:11,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1501 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1212, Invalid=4950, Unknown=0, NotChecked=0, Total=6162 [2023-12-16 20:00:11,029 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 2657 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 5420 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 5435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 5420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:11,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2657 Valid, 1376 Invalid, 5435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 5420 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-16 20:00:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-16 20:00:11,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 277. [2023-12-16 20:00:11,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.5253623188405796) internal successors, (421), 276 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 20:00:11,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 421 transitions. [2023-12-16 20:00:11,043 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 421 transitions. Word has length 92 [2023-12-16 20:00:11,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:11,043 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 421 transitions. [2023-12-16 20:00:11,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.027777777777778) internal successors, (253), 35 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 20:00:11,044 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 421 transitions. [2023-12-16 20:00:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-16 20:00:11,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:11,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:11,052 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 20:00:11,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:11,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:11,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:11,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1838168030, now seen corresponding path program 1 times [2023-12-16 20:00:11,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:11,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265383924] [2023-12-16 20:00:11,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:12,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:12,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265383924] [2023-12-16 20:00:12,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265383924] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:00:12,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403704829] [2023-12-16 20:00:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:12,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:12,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:00:12,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:00:12,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 20:00:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:12,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-16 20:00:12,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:00:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:12,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 20:00:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:13,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403704829] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 20:00:13,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 20:00:13,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 28 [2023-12-16 20:00:13,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033889036] [2023-12-16 20:00:13,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 20:00:13,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 20:00:13,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:13,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 20:00:13,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2023-12-16 20:00:13,412 INFO L87 Difference]: Start difference. First operand 277 states and 421 transitions. Second operand has 29 states, 29 states have (on average 9.310344827586206) internal successors, (270), 28 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 20:00:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:14,541 INFO L93 Difference]: Finished difference Result 550 states and 846 transitions. [2023-12-16 20:00:14,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 20:00:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.310344827586206) internal successors, (270), 28 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2023-12-16 20:00:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:14,543 INFO L225 Difference]: With dead ends: 550 [2023-12-16 20:00:14,543 INFO L226 Difference]: Without dead ends: 335 [2023-12-16 20:00:14,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=479, Invalid=1501, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 20:00:14,544 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 1923 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:14,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 611 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 20:00:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-12-16 20:00:14,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 237. [2023-12-16 20:00:14,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.5084745762711864) internal successors, (356), 236 states have internal predecessors, (356), 0 states have call successors, (0), 0 states 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 20:00:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 356 transitions. [2023-12-16 20:00:14,550 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 356 transitions. Word has length 92 [2023-12-16 20:00:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:14,550 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 356 transitions. [2023-12-16 20:00:14,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.310344827586206) internal successors, (270), 28 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 20:00:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 356 transitions. [2023-12-16 20:00:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-12-16 20:00:14,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:14,551 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:14,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 20:00:14,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 20:00:14,758 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:14,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1985947356, now seen corresponding path program 1 times [2023-12-16 20:00:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:14,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261870845] [2023-12-16 20:00:14,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:14,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:15,979 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:15,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:15,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261870845] [2023-12-16 20:00:15,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261870845] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:15,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:15,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:00:15,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568126367] [2023-12-16 20:00:15,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:15,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:00:15,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:15,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:00:15,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:00:15,981 INFO L87 Difference]: Start difference. First operand 237 states and 356 transitions. Second operand has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 20:00:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:16,550 INFO L93 Difference]: Finished difference Result 730 states and 1110 transitions. [2023-12-16 20:00:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 20:00:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-12-16 20:00:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:16,564 INFO L225 Difference]: With dead ends: 730 [2023-12-16 20:00:16,564 INFO L226 Difference]: Without dead ends: 599 [2023-12-16 20:00:16,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-12-16 20:00:16,566 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 593 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:16,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 527 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 20:00:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-12-16 20:00:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 376. [2023-12-16 20:00:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.5066666666666666) internal successors, (565), 375 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 20:00:16,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 565 transitions. [2023-12-16 20:00:16,580 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 565 transitions. Word has length 136 [2023-12-16 20:00:16,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:16,580 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 565 transitions. [2023-12-16 20:00:16,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 8 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 20:00:16,580 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 565 transitions. [2023-12-16 20:00:16,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-12-16 20:00:16,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:16,581 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:16,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-16 20:00:16,581 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:16,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash 605585284, now seen corresponding path program 1 times [2023-12-16 20:00:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:16,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082453264] [2023-12-16 20:00:16,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:16,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:17,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:17,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082453264] [2023-12-16 20:00:17,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082453264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:17,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:17,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:00:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964066098] [2023-12-16 20:00:17,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:17,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 20:00:17,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 20:00:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-16 20:00:17,880 INFO L87 Difference]: Start difference. First operand 376 states and 565 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 20:00:18,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:18,362 INFO L93 Difference]: Finished difference Result 1098 states and 1664 transitions. [2023-12-16 20:00:18,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 20:00:18,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2023-12-16 20:00:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:18,365 INFO L225 Difference]: With dead ends: 1098 [2023-12-16 20:00:18,365 INFO L226 Difference]: Without dead ends: 842 [2023-12-16 20:00:18,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-16 20:00:18,366 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 410 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:18,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 439 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 20:00:18,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2023-12-16 20:00:18,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 442. [2023-12-16 20:00:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.4671201814058956) internal successors, (647), 441 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 20:00:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 647 transitions. [2023-12-16 20:00:18,381 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 647 transitions. Word has length 137 [2023-12-16 20:00:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:18,381 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 647 transitions. [2023-12-16 20:00:18,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 20:00:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 647 transitions. [2023-12-16 20:00:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 20:00:18,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:18,382 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:18,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-16 20:00:18,382 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:18,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2087874316, now seen corresponding path program 1 times [2023-12-16 20:00:18,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:18,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145113525] [2023-12-16 20:00:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:20,026 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:20,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145113525] [2023-12-16 20:00:20,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145113525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:20,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:20,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-16 20:00:20,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447469183] [2023-12-16 20:00:20,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:20,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 20:00:20,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 20:00:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-16 20:00:20,027 INFO L87 Difference]: Start difference. First operand 442 states and 647 transitions. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 20:00:21,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:21,077 INFO L93 Difference]: Finished difference Result 1890 states and 2783 transitions. [2023-12-16 20:00:21,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 20:00:21,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-12-16 20:00:21,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:21,081 INFO L225 Difference]: With dead ends: 1890 [2023-12-16 20:00:21,081 INFO L226 Difference]: Without dead ends: 1578 [2023-12-16 20:00:21,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2023-12-16 20:00:21,082 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 680 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:21,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 833 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 20:00:21,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1578 states. [2023-12-16 20:00:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1578 to 749. [2023-12-16 20:00:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.4491978609625669) internal successors, (1084), 748 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states 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 20:00:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1084 transitions. [2023-12-16 20:00:21,126 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1084 transitions. Word has length 138 [2023-12-16 20:00:21,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:21,126 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1084 transitions. [2023-12-16 20:00:21,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 20:00:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1084 transitions. [2023-12-16 20:00:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 20:00:21,136 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:21,136 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:21,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 20:00:21,136 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:21,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:21,137 INFO L85 PathProgramCache]: Analyzing trace with hash -267930934, now seen corresponding path program 1 times [2023-12-16 20:00:21,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726166992] [2023-12-16 20:00:21,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:23,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:23,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726166992] [2023-12-16 20:00:23,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726166992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:23,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:23,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-16 20:00:23,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133717835] [2023-12-16 20:00:23,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:23,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 20:00:23,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:23,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 20:00:23,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-16 20:00:23,083 INFO L87 Difference]: Start difference. First operand 749 states and 1084 transitions. Second operand has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 20:00:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:24,173 INFO L93 Difference]: Finished difference Result 2147 states and 3154 transitions. [2023-12-16 20:00:24,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 20:00:24,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-12-16 20:00:24,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:24,179 INFO L225 Difference]: With dead ends: 2147 [2023-12-16 20:00:24,179 INFO L226 Difference]: Without dead ends: 1581 [2023-12-16 20:00:24,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2023-12-16 20:00:24,180 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 734 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:24,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 866 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 20:00:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-12-16 20:00:24,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 749. [2023-12-16 20:00:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.4491978609625669) internal successors, (1084), 748 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states 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 20:00:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1084 transitions. [2023-12-16 20:00:24,212 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1084 transitions. Word has length 138 [2023-12-16 20:00:24,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:24,212 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1084 transitions. [2023-12-16 20:00:24,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 12 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 20:00:24,212 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1084 transitions. [2023-12-16 20:00:24,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 20:00:24,213 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:24,213 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:24,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-16 20:00:24,214 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:24,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash 92060108, now seen corresponding path program 1 times [2023-12-16 20:00:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:24,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440275678] [2023-12-16 20:00:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:24,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 70 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:25,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:25,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440275678] [2023-12-16 20:00:25,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440275678] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:00:25,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365515554] [2023-12-16 20:00:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:25,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:25,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:00:25,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:00:25,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 20:00:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:25,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-16 20:00:25,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:00:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:25,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 20:00:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365515554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:25,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 20:00:25,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2023-12-16 20:00:25,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630225821] [2023-12-16 20:00:25,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:25,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:00:25,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:00:25,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2023-12-16 20:00:25,980 INFO L87 Difference]: Start difference. First operand 749 states and 1084 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 20:00:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:26,743 INFO L93 Difference]: Finished difference Result 2127 states and 3091 transitions. [2023-12-16 20:00:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 20:00:26,743 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2023-12-16 20:00:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:26,747 INFO L225 Difference]: With dead ends: 2127 [2023-12-16 20:00:26,747 INFO L226 Difference]: Without dead ends: 1561 [2023-12-16 20:00:26,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2023-12-16 20:00:26,749 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 420 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:26,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 530 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 20:00:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2023-12-16 20:00:26,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 895. [2023-12-16 20:00:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.4384787472035794) internal successors, (1286), 894 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states 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 20:00:26,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1286 transitions. [2023-12-16 20:00:26,788 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1286 transitions. Word has length 138 [2023-12-16 20:00:26,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:26,789 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1286 transitions. [2023-12-16 20:00:26,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 20:00:26,789 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1286 transitions. [2023-12-16 20:00:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-16 20:00:26,790 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:26,790 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:26,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 20:00:26,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:26,999 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:26,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash 37667210, now seen corresponding path program 1 times [2023-12-16 20:00:26,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:26,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039767520] [2023-12-16 20:00:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-16 20:00:27,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:27,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039767520] [2023-12-16 20:00:27,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039767520] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:27,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:27,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 20:00:27,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026865044] [2023-12-16 20:00:27,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:27,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 20:00:27,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:27,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 20:00:27,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 20:00:27,905 INFO L87 Difference]: Start difference. First operand 895 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 20:00:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:27,988 INFO L93 Difference]: Finished difference Result 1421 states and 2067 transitions. [2023-12-16 20:00:27,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 20:00:27,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 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 138 [2023-12-16 20:00:27,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:27,990 INFO L225 Difference]: With dead ends: 1421 [2023-12-16 20:00:27,990 INFO L226 Difference]: Without dead ends: 685 [2023-12-16 20:00:27,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 20:00:27,992 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 177 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:27,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 468 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 20:00:27,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2023-12-16 20:00:28,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 649. [2023-12-16 20:00:28,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 648 states have (on average 1.4506172839506173) internal successors, (940), 648 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 20:00:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 940 transitions. [2023-12-16 20:00:28,011 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 940 transitions. Word has length 138 [2023-12-16 20:00:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:28,011 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 940 transitions. [2023-12-16 20:00:28,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 20:00:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 940 transitions. [2023-12-16 20:00:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 20:00:28,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:28,012 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:28,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-16 20:00:28,013 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:28,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:28,013 INFO L85 PathProgramCache]: Analyzing trace with hash -791540552, now seen corresponding path program 1 times [2023-12-16 20:00:28,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:28,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472055782] [2023-12-16 20:00:28,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:28,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:29,666 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:29,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472055782] [2023-12-16 20:00:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472055782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 20:00:29,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 20:00:29,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-16 20:00:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694599125] [2023-12-16 20:00:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 20:00:29,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 20:00:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:29,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 20:00:29,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-16 20:00:29,667 INFO L87 Difference]: Start difference. First operand 649 states and 940 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 20:00:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:30,251 INFO L93 Difference]: Finished difference Result 1405 states and 2070 transitions. [2023-12-16 20:00:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 20:00:30,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-12-16 20:00:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:30,254 INFO L225 Difference]: With dead ends: 1405 [2023-12-16 20:00:30,254 INFO L226 Difference]: Without dead ends: 915 [2023-12-16 20:00:30,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-12-16 20:00:30,255 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 422 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:30,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 422 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 20:00:30,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2023-12-16 20:00:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 653. [2023-12-16 20:00:30,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.4478527607361964) internal successors, (944), 652 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 20:00:30,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 944 transitions. [2023-12-16 20:00:30,282 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 944 transitions. Word has length 139 [2023-12-16 20:00:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:30,283 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 944 transitions. [2023-12-16 20:00:30,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 20:00:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 944 transitions. [2023-12-16 20:00:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 20:00:30,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:30,284 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:30,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-16 20:00:30,284 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:30,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:30,285 INFO L85 PathProgramCache]: Analyzing trace with hash -807059270, now seen corresponding path program 1 times [2023-12-16 20:00:30,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:30,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520586631] [2023-12-16 20:00:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:30,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:32,640 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:32,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:32,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520586631] [2023-12-16 20:00:32,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520586631] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:00:32,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723600095] [2023-12-16 20:00:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:32,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:32,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:00:32,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:00:32,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 20:00:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:33,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-16 20:00:33,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:00:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 22 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:33,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 20:00:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723600095] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 20:00:34,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 20:00:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 15] total 45 [2023-12-16 20:00:34,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168588234] [2023-12-16 20:00:34,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 20:00:34,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-16 20:00:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:34,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-16 20:00:34,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 20:00:34,202 INFO L87 Difference]: Start difference. First operand 653 states and 944 transitions. Second operand has 45 states, 45 states have (on average 8.511111111111111) internal successors, (383), 45 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 20:00:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 20:00:38,040 INFO L93 Difference]: Finished difference Result 2312 states and 3437 transitions. [2023-12-16 20:00:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-16 20:00:38,040 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 8.511111111111111) internal successors, (383), 45 states have internal predecessors, (383), 0 states have call successors, (0), 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 139 [2023-12-16 20:00:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 20:00:38,044 INFO L225 Difference]: With dead ends: 2312 [2023-12-16 20:00:38,044 INFO L226 Difference]: Without dead ends: 1818 [2023-12-16 20:00:38,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3129 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2042, Invalid=9730, Unknown=0, NotChecked=0, Total=11772 [2023-12-16 20:00:38,047 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 4351 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 4665 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4351 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 4693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 4665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:38,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4351 Valid, 1498 Invalid, 4693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 4665 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-16 20:00:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2023-12-16 20:00:38,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 795. [2023-12-16 20:00:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.4609571788413098) internal successors, (1160), 794 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states 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 20:00:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1160 transitions. [2023-12-16 20:00:38,074 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1160 transitions. Word has length 139 [2023-12-16 20:00:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 20:00:38,075 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1160 transitions. [2023-12-16 20:00:38,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.511111111111111) internal successors, (383), 45 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 20:00:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1160 transitions. [2023-12-16 20:00:38,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-16 20:00:38,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 20:00:38,077 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:00:38,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 20:00:38,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:38,288 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 20:00:38,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 20:00:38,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1433043366, now seen corresponding path program 1 times [2023-12-16 20:00:38,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 20:00:38,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826859701] [2023-12-16 20:00:38,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:38,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 20:00:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:40,192 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 51 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:40,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 20:00:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826859701] [2023-12-16 20:00:40,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826859701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 20:00:40,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454939587] [2023-12-16 20:00:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 20:00:40,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:40,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 20:00:40,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 20:00:40,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 20:00:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 20:00:40,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-16 20:00:40,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 20:00:40,957 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:40,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 20:00:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 37 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 20:00:41,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454939587] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 20:00:41,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 20:00:41,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 13] total 30 [2023-12-16 20:00:41,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771271480] [2023-12-16 20:00:41,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 20:00:41,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 20:00:41,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 20:00:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 20:00:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-12-16 20:00:41,389 INFO L87 Difference]: Start difference. First operand 795 states and 1160 transitions. Second operand has 30 states, 30 states have (on average 11.533333333333333) internal successors, (346), 30 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 20:00:42,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 20:00:42,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=356, Invalid=1366, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 20:00:42,119 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 990 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 20:00:42,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 469 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 20:00:42,126 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 20:00:42,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 20:00:42,147 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 20:00:42,149 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 20:00:42,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 20:00:42,328 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (795states) and FLOYD_HOARE automaton (currently 15 states, 30 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 42 known predicates. [2023-12-16 20:00:42,333 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 20:00:42,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 20:00:42,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 08:00:42 BoogieIcfgContainer [2023-12-16 20:00:42,336 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 20:00:42,336 INFO L158 Benchmark]: Toolchain (without parser) took 52008.46ms. Allocated memory was 185.6MB in the beginning and 961.5MB in the end (delta: 775.9MB). Free memory was 144.8MB in the beginning and 469.9MB in the end (delta: -325.1MB). Peak memory consumption was 451.7MB. Max. memory is 8.0GB. [2023-12-16 20:00:42,336 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 20:00:42,336 INFO L158 Benchmark]: CACSL2BoogieTranslator took 354.28ms. Allocated memory is still 185.6MB. Free memory was 144.4MB in the beginning and 122.4MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-12-16 20:00:42,337 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.04ms. Allocated memory is still 185.6MB. Free memory was 122.4MB in the beginning and 108.4MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-16 20:00:42,337 INFO L158 Benchmark]: Boogie Preprocessor took 136.42ms. Allocated memory is still 185.6MB. Free memory was 108.4MB in the beginning and 99.0MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-16 20:00:42,337 INFO L158 Benchmark]: RCFGBuilder took 754.69ms. Allocated memory is still 185.6MB. Free memory was 99.0MB in the beginning and 85.2MB in the end (delta: 13.8MB). Peak memory consumption was 18.5MB. Max. memory is 8.0GB. [2023-12-16 20:00:42,337 INFO L158 Benchmark]: TraceAbstraction took 50669.41ms. Allocated memory was 185.6MB in the beginning and 961.5MB in the end (delta: 775.9MB). Free memory was 84.7MB in the beginning and 469.9MB in the end (delta: -385.1MB). Peak memory consumption was 391.3MB. Max. memory is 8.0GB. [2023-12-16 20:00:42,338 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 185.6MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 354.28ms. Allocated memory is still 185.6MB. Free memory was 144.4MB in the beginning and 122.4MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 87.04ms. Allocated memory is still 185.6MB. Free memory was 122.4MB in the beginning and 108.4MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 136.42ms. Allocated memory is still 185.6MB. Free memory was 108.4MB in the beginning and 99.0MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * RCFGBuilder took 754.69ms. Allocated memory is still 185.6MB. Free memory was 99.0MB in the beginning and 85.2MB in the end (delta: 13.8MB). Peak memory consumption was 18.5MB. Max. memory is 8.0GB. * TraceAbstraction took 50669.41ms. Allocated memory was 185.6MB in the beginning and 961.5MB in the end (delta: 775.9MB). Free memory was 84.7MB in the beginning and 469.9MB in the end (delta: -385.1MB). Peak memory consumption was 391.3MB. 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: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (795states) and FLOYD_HOARE automaton (currently 15 states, 30 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 42 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 50.6s, OverallIterations: 25, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18304 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18304 mSDsluCounter, 15108 SdHoareTripleChecker+Invalid, 10.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12222 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23733 IncrementalHoareTripleChecker+Invalid, 23811 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 2886 mSDtfsCounter, 23733 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1689 GetRequests, 1194 SyntacticMatches, 2 SemanticMatches, 492 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5681 ImplicationChecksByTransitivity, 7.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=895occurred in iteration=21, InterpolantAutomatonStates: 329, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 24 MinimizatonAttempts, 5551 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 7.6s SatisfiabilityAnalysisTime, 21.3s InterpolantComputationTime, 3085 NumberOfCodeBlocks, 3085 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 3511 ConstructedInterpolants, 0 QuantifiedInterpolants, 22502 SizeOfPredicates, 121 NumberOfNonLiveVariables, 7897 ConjunctsInSsa, 345 ConjunctsInUnsatCore, 36 InterpolantComputations, 21 PerfectInterpolantSequences, 962/1191 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