/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 19:10:01,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 19:10:01,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 19:10:01,723 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 19:10:01,723 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 19:10:01,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 19:10:01,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 19:10:01,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 19:10:01,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 19:10:01,749 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 19:10:01,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 19:10:01,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 19:10:01,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 19:10:01,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 19:10:01,752 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 19:10:01,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 19:10:01,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 19:10:01,752 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 19:10:01,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 19:10:01,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 19:10:01,754 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 19:10:01,754 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 19:10:01,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 19:10:01,755 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 19:10:01,755 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 19:10:01,755 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 19:10:01,755 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 19:10:01,755 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 19:10:01,756 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 19:10:01,756 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 19:10:01,757 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 19:10:01,757 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 19:10:01,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:10:01,757 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 19:10:01,758 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 19:10:01,758 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 19:10:01,758 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 19:10:01,758 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 19:10:01,758 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 19:10:01,758 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 19:10:01,758 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 19:10:01,759 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 19:10:01,759 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 19:10:01,759 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 19:10:01,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 19:10:01,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 19:10:01,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 19:10:01,953 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 19:10:01,953 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 19:10:01,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2023-12-15 19:10:02,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 19:10:03,269 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 19:10:03,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2023-12-15 19:10:03,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbb57f51/690be3f6fe874473a4bc92fabbc5179f/FLAG7a94ebdba [2023-12-15 19:10:03,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dbb57f51/690be3f6fe874473a4bc92fabbc5179f [2023-12-15 19:10:03,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 19:10:03,301 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 19:10:03,303 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 19:10:03,303 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 19:10:03,307 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 19:10:03,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:10:03" (1/1) ... [2023-12-15 19:10:03,308 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46b1dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:03, skipping insertion in model container [2023-12-15 19:10:03,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 07:10:03" (1/1) ... [2023-12-15 19:10:03,378 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 19:10:03,522 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30.c[3774,3787] [2023-12-15 19:10:03,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:10:03,969 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 19:10:03,988 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30.c[3774,3787] [2023-12-15 19:10:04,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 19:10:04,172 INFO L206 MainTranslator]: Completed translation [2023-12-15 19:10:04,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04 WrapperNode [2023-12-15 19:10:04,172 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 19:10:04,173 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 19:10:04,173 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 19:10:04,173 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 19:10:04,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,423 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2613 [2023-12-15 19:10:04,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 19:10:04,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 19:10:04,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 19:10:04,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 19:10:04,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,465 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,544 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-15 19:10:04,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,725 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 19:10:04,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 19:10:04,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 19:10:04,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 19:10:04,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (1/1) ... [2023-12-15 19:10:04,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 19:10:04,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:10:04,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-15 19:10:04,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-15 19:10:04,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 19:10:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 19:10:04,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 19:10:04,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 19:10:04,948 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 19:10:04,950 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 19:10:07,486 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 19:10:07,559 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 19:10:07,559 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 19:10:07,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:10:07 BoogieIcfgContainer [2023-12-15 19:10:07,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 19:10:07,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 19:10:07,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 19:10:07,563 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 19:10:07,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 07:10:03" (1/3) ... [2023-12-15 19:10:07,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb9b324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:10:07, skipping insertion in model container [2023-12-15 19:10:07,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 07:10:04" (2/3) ... [2023-12-15 19:10:07,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb9b324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 07:10:07, skipping insertion in model container [2023-12-15 19:10:07,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 07:10:07" (3/3) ... [2023-12-15 19:10:07,565 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label30.c [2023-12-15 19:10:07,577 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 19:10:07,577 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 19:10:07,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 19:10:07,631 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;@239cda9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 19:10:07,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 19:10:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 19:10:07,643 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:07,644 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] [2023-12-15 19:10:07,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:07,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash -435000657, now seen corresponding path program 1 times [2023-12-15 19:10:07,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:07,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828421978] [2023-12-15 19:10:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:07,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:07,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:07,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:07,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828421978] [2023-12-15 19:10:07,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828421978] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:07,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:10:07,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270122734] [2023-12-15 19:10:07,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:07,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 19:10:07,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 19:10:07,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:10:07,826 INFO L87 Difference]: Start difference. First operand has 528 states, 526 states have (on average 1.9011406844106464) internal successors, (1000), 527 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:07,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:07,884 INFO L93 Difference]: Finished difference Result 1055 states and 1999 transitions. [2023-12-15 19:10:07,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 19:10:07,891 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-15 19:10:07,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:07,904 INFO L225 Difference]: With dead ends: 1055 [2023-12-15 19:10:07,905 INFO L226 Difference]: Without dead ends: 526 [2023-12-15 19:10:07,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 19:10:07,910 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:07,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 935 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 19:10:07,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2023-12-15 19:10:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2023-12-15 19:10:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 1.7809523809523808) internal successors, (935), 525 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:07,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 935 transitions. [2023-12-15 19:10:07,957 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 935 transitions. Word has length 23 [2023-12-15 19:10:07,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:07,957 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 935 transitions. [2023-12-15 19:10:07,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:07,957 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 935 transitions. [2023-12-15 19:10:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 19:10:07,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:07,958 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] [2023-12-15 19:10:07,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 19:10:07,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:07,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:07,959 INFO L85 PathProgramCache]: Analyzing trace with hash -51117638, now seen corresponding path program 1 times [2023-12-15 19:10:07,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:07,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520039934] [2023-12-15 19:10:07,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:07,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:08,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:08,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520039934] [2023-12-15 19:10:08,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520039934] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:08,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:08,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:10:08,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341835911] [2023-12-15 19:10:08,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:08,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:08,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:08,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:08,074 INFO L87 Difference]: Start difference. First operand 526 states and 935 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:10,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:10,304 INFO L93 Difference]: Finished difference Result 1522 states and 2728 transitions. [2023-12-15 19:10:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:10,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-15 19:10:10,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:10,310 INFO L225 Difference]: With dead ends: 1522 [2023-12-15 19:10:10,310 INFO L226 Difference]: Without dead ends: 997 [2023-12-15 19:10:10,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:10,313 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 487 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:10,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 239 Invalid, 1843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:10:10,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-15 19:10:10,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 981. [2023-12-15 19:10:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.7081632653061225) internal successors, (1674), 980 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1674 transitions. [2023-12-15 19:10:10,348 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1674 transitions. Word has length 23 [2023-12-15 19:10:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:10,348 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1674 transitions. [2023-12-15 19:10:10,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1674 transitions. [2023-12-15 19:10:10,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-15 19:10:10,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:10,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:10,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 19:10:10,351 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:10,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:10,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1435741255, now seen corresponding path program 1 times [2023-12-15 19:10:10,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219653039] [2023-12-15 19:10:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:10,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:10,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219653039] [2023-12-15 19:10:10,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219653039] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:10,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:10,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:10:10,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608427015] [2023-12-15 19:10:10,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:10,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:10,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:10,520 INFO L87 Difference]: Start difference. First operand 981 states and 1674 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 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) [2023-12-15 19:10:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:12,423 INFO L93 Difference]: Finished difference Result 2840 states and 4880 transitions. [2023-12-15 19:10:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:12,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 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 [2023-12-15 19:10:12,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:12,429 INFO L225 Difference]: With dead ends: 2840 [2023-12-15 19:10:12,430 INFO L226 Difference]: Without dead ends: 1860 [2023-12-15 19:10:12,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:12,432 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:12,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 494 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:10:12,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-15 19:10:12,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1856. [2023-12-15 19:10:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 1.4549865229110512) internal successors, (2699), 1855 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2699 transitions. [2023-12-15 19:10:12,455 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2699 transitions. Word has length 88 [2023-12-15 19:10:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:12,456 INFO L495 AbstractCegarLoop]: Abstraction has 1856 states and 2699 transitions. [2023-12-15 19:10:12,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 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) [2023-12-15 19:10:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2699 transitions. [2023-12-15 19:10:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-15 19:10:12,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:12,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:12,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 19:10:12,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:12,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:12,460 INFO L85 PathProgramCache]: Analyzing trace with hash 761148988, now seen corresponding path program 1 times [2023-12-15 19:10:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639899528] [2023-12-15 19:10:12,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:12,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:12,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639899528] [2023-12-15 19:10:12,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639899528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:12,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:12,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:10:12,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595293805] [2023-12-15 19:10:12,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:12,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:12,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:12,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:12,730 INFO L87 Difference]: Start difference. First operand 1856 states and 2699 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 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) [2023-12-15 19:10:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:14,896 INFO L93 Difference]: Finished difference Result 4590 states and 6639 transitions. [2023-12-15 19:10:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:14,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 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 128 [2023-12-15 19:10:14,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:14,905 INFO L225 Difference]: With dead ends: 4590 [2023-12-15 19:10:14,905 INFO L226 Difference]: Without dead ends: 2735 [2023-12-15 19:10:14,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:14,907 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:14,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 535 Invalid, 1764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 19:10:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2023-12-15 19:10:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2715. [2023-12-15 19:10:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 1.3909358879882092) internal successors, (3775), 2714 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:14,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 3775 transitions. [2023-12-15 19:10:14,938 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 3775 transitions. Word has length 128 [2023-12-15 19:10:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:14,938 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 3775 transitions. [2023-12-15 19:10:14,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 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) [2023-12-15 19:10:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 3775 transitions. [2023-12-15 19:10:14,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-15 19:10:14,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:14,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:14,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 19:10:14,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:14,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:14,940 INFO L85 PathProgramCache]: Analyzing trace with hash 461202957, now seen corresponding path program 1 times [2023-12-15 19:10:14,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:14,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877103297] [2023-12-15 19:10:14,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:14,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:15,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:15,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877103297] [2023-12-15 19:10:15,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877103297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:15,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:15,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 19:10:15,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716193912] [2023-12-15 19:10:15,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:15,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:15,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:15,098 INFO L87 Difference]: Start difference. First operand 2715 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:16,686 INFO L93 Difference]: Finished difference Result 6708 states and 9428 transitions. [2023-12-15 19:10:16,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:16,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2023-12-15 19:10:16,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:16,696 INFO L225 Difference]: With dead ends: 6708 [2023-12-15 19:10:16,697 INFO L226 Difference]: Without dead ends: 3994 [2023-12-15 19:10:16,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:16,700 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:16,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 589 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:10:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2023-12-15 19:10:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3141. [2023-12-15 19:10:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3141 states, 3140 states have (on average 1.2745222929936306) internal successors, (4002), 3140 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4002 transitions. [2023-12-15 19:10:16,739 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4002 transitions. Word has length 134 [2023-12-15 19:10:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:16,739 INFO L495 AbstractCegarLoop]: Abstraction has 3141 states and 4002 transitions. [2023-12-15 19:10:16,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4002 transitions. [2023-12-15 19:10:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-12-15 19:10:16,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:16,741 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:16,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 19:10:16,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:16,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1846940185, now seen corresponding path program 1 times [2023-12-15 19:10:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:16,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917308370] [2023-12-15 19:10:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:16,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:16,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917308370] [2023-12-15 19:10:16,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917308370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:16,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:16,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 19:10:16,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168215941] [2023-12-15 19:10:16,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:16,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 19:10:16,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:16,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 19:10:16,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:10:16,991 INFO L87 Difference]: Start difference. First operand 3141 states and 4002 transitions. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:19,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:19,156 INFO L93 Difference]: Finished difference Result 8006 states and 10509 transitions. [2023-12-15 19:10:19,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:10:19,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 171 [2023-12-15 19:10:19,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:19,169 INFO L225 Difference]: With dead ends: 8006 [2023-12-15 19:10:19,169 INFO L226 Difference]: Without dead ends: 4866 [2023-12-15 19:10:19,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:10:19,174 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1655 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1655 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:19,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1655 Valid, 839 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [978 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 19:10:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4866 states. [2023-12-15 19:10:19,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4866 to 4851. [2023-12-15 19:10:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4851 states, 4850 states have (on average 1.26659793814433) internal successors, (6143), 4850 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:19,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4851 states to 4851 states and 6143 transitions. [2023-12-15 19:10:19,244 INFO L78 Accepts]: Start accepts. Automaton has 4851 states and 6143 transitions. Word has length 171 [2023-12-15 19:10:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:19,244 INFO L495 AbstractCegarLoop]: Abstraction has 4851 states and 6143 transitions. [2023-12-15 19:10:19,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:19,244 INFO L276 IsEmpty]: Start isEmpty. Operand 4851 states and 6143 transitions. [2023-12-15 19:10:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-15 19:10:19,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:19,246 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:19,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 19:10:19,246 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:19,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:19,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1222559832, now seen corresponding path program 1 times [2023-12-15 19:10:19,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:19,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656976370] [2023-12-15 19:10:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:19,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-12-15 19:10:19,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:19,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656976370] [2023-12-15 19:10:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656976370] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:19,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:19,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:10:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627500148] [2023-12-15 19:10:19,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:19,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:19,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:19,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:19,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:19,348 INFO L87 Difference]: Start difference. First operand 4851 states and 6143 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:21,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:21,196 INFO L93 Difference]: Finished difference Result 12248 states and 15824 transitions. [2023-12-15 19:10:21,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:21,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 177 [2023-12-15 19:10:21,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:21,211 INFO L225 Difference]: With dead ends: 12248 [2023-12-15 19:10:21,211 INFO L226 Difference]: Without dead ends: 7398 [2023-12-15 19:10:21,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:21,215 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 423 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:21,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 543 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:10:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7398 states. [2023-12-15 19:10:21,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7398 to 4825. [2023-12-15 19:10:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4825 states, 4824 states have (on average 1.265339966832504) internal successors, (6104), 4824 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:21,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4825 states to 4825 states and 6104 transitions. [2023-12-15 19:10:21,273 INFO L78 Accepts]: Start accepts. Automaton has 4825 states and 6104 transitions. Word has length 177 [2023-12-15 19:10:21,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:21,274 INFO L495 AbstractCegarLoop]: Abstraction has 4825 states and 6104 transitions. [2023-12-15 19:10:21,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:21,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states and 6104 transitions. [2023-12-15 19:10:21,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-12-15 19:10:21,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:21,275 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:21,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 19:10:21,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:21,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:21,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1776975644, now seen corresponding path program 1 times [2023-12-15 19:10:21,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:21,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930875023] [2023-12-15 19:10:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:21,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:10:21,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:21,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930875023] [2023-12-15 19:10:21,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930875023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:21,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:21,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:10:21,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889823957] [2023-12-15 19:10:21,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:21,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:21,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:21,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:21,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:21,386 INFO L87 Difference]: Start difference. First operand 4825 states and 6104 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:23,226 INFO L93 Difference]: Finished difference Result 13485 states and 17136 transitions. [2023-12-15 19:10:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:23,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 190 [2023-12-15 19:10:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:23,244 INFO L225 Difference]: With dead ends: 13485 [2023-12-15 19:10:23,244 INFO L226 Difference]: Without dead ends: 7354 [2023-12-15 19:10:23,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:23,251 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 569 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:23,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 632 Invalid, 1822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-15 19:10:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7354 states. [2023-12-15 19:10:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7354 to 6498. [2023-12-15 19:10:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6498 states, 6497 states have (on average 1.187163306141296) internal successors, (7713), 6497 states have internal predecessors, (7713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:23,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 7713 transitions. [2023-12-15 19:10:23,345 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 7713 transitions. Word has length 190 [2023-12-15 19:10:23,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:23,345 INFO L495 AbstractCegarLoop]: Abstraction has 6498 states and 7713 transitions. [2023-12-15 19:10:23,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 7713 transitions. [2023-12-15 19:10:23,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-12-15 19:10:23,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:23,347 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:23,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 19:10:23,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:23,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:23,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2032304414, now seen corresponding path program 1 times [2023-12-15 19:10:23,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:23,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017142784] [2023-12-15 19:10:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:23,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 43 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:23,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017142784] [2023-12-15 19:10:23,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017142784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:10:23,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099803368] [2023-12-15 19:10:23,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:23,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:10:23,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:10:23,681 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:10:23,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 19:10:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:23,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:10:23,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:10:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 43 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:24,055 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:10:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 19:10:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099803368] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:10:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:10:24,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-12-15 19:10:24,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590790419] [2023-12-15 19:10:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:24,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:10:24,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:24,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:10:24,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:10:24,355 INFO L87 Difference]: Start difference. First operand 6498 states and 7713 transitions. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:26,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:26,706 INFO L93 Difference]: Finished difference Result 21950 states and 25849 transitions. [2023-12-15 19:10:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:10:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 243 [2023-12-15 19:10:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:26,725 INFO L225 Difference]: With dead ends: 21950 [2023-12-15 19:10:26,725 INFO L226 Difference]: Without dead ends: 15027 [2023-12-15 19:10:26,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-15 19:10:26,732 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 902 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 750 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 750 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:26,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 115 Invalid, 2826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [750 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:10:26,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15027 states. [2023-12-15 19:10:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15027 to 15024. [2023-12-15 19:10:26,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15024 states, 15023 states have (on average 1.1618185448978233) internal successors, (17454), 15023 states have internal predecessors, (17454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:26,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15024 states to 15024 states and 17454 transitions. [2023-12-15 19:10:26,889 INFO L78 Accepts]: Start accepts. Automaton has 15024 states and 17454 transitions. Word has length 243 [2023-12-15 19:10:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:26,889 INFO L495 AbstractCegarLoop]: Abstraction has 15024 states and 17454 transitions. [2023-12-15 19:10:26,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 15024 states and 17454 transitions. [2023-12-15 19:10:26,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-15 19:10:26,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:26,892 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:26,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 19:10:27,097 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 [2023-12-15 19:10:27,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:27,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:27,100 INFO L85 PathProgramCache]: Analyzing trace with hash -979862628, now seen corresponding path program 1 times [2023-12-15 19:10:27,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:27,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836973874] [2023-12-15 19:10:27,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:27,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-15 19:10:27,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:27,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836973874] [2023-12-15 19:10:27,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836973874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:27,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:27,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:10:27,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871516279] [2023-12-15 19:10:27,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:27,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:27,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:27,217 INFO L87 Difference]: Start difference. First operand 15024 states and 17454 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:28,674 INFO L93 Difference]: Finished difference Result 34300 states and 39677 transitions. [2023-12-15 19:10:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:28,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 261 [2023-12-15 19:10:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:28,701 INFO L225 Difference]: With dead ends: 34300 [2023-12-15 19:10:28,701 INFO L226 Difference]: Without dead ends: 18845 [2023-12-15 19:10:28,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:28,713 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 451 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:28,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 314 Invalid, 1352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:10:28,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18845 states. [2023-12-15 19:10:28,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18845 to 17142. [2023-12-15 19:10:28,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17142 states, 17141 states have (on average 1.149407852517356) internal successors, (19702), 17141 states have internal predecessors, (19702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17142 states to 17142 states and 19702 transitions. [2023-12-15 19:10:28,923 INFO L78 Accepts]: Start accepts. Automaton has 17142 states and 19702 transitions. Word has length 261 [2023-12-15 19:10:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:28,924 INFO L495 AbstractCegarLoop]: Abstraction has 17142 states and 19702 transitions. [2023-12-15 19:10:28,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:28,924 INFO L276 IsEmpty]: Start isEmpty. Operand 17142 states and 19702 transitions. [2023-12-15 19:10:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-15 19:10:28,927 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:28,927 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-12-15 19:10:28,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 19:10:28,928 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:28,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:28,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2049516963, now seen corresponding path program 1 times [2023-12-15 19:10:28,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:28,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788518362] [2023-12-15 19:10:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:28,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-12-15 19:10:29,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:29,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788518362] [2023-12-15 19:10:29,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788518362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:29,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:29,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:10:29,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694624276] [2023-12-15 19:10:29,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:29,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:29,119 INFO L87 Difference]: Start difference. First operand 17142 states and 19702 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:30,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:30,674 INFO L93 Difference]: Finished difference Result 37695 states and 43551 transitions. [2023-12-15 19:10:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:30,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 283 [2023-12-15 19:10:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:30,697 INFO L225 Difference]: With dead ends: 37695 [2023-12-15 19:10:30,698 INFO L226 Difference]: Without dead ends: 20129 [2023-12-15 19:10:30,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:30,707 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 430 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:30,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 795 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:10:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20129 states. [2023-12-15 19:10:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20129 to 20127. [2023-12-15 19:10:30,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20127 states, 20126 states have (on average 1.1397197654774918) internal successors, (22938), 20126 states have internal predecessors, (22938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20127 states to 20127 states and 22938 transitions. [2023-12-15 19:10:30,902 INFO L78 Accepts]: Start accepts. Automaton has 20127 states and 22938 transitions. Word has length 283 [2023-12-15 19:10:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:30,903 INFO L495 AbstractCegarLoop]: Abstraction has 20127 states and 22938 transitions. [2023-12-15 19:10:30,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 20127 states and 22938 transitions. [2023-12-15 19:10:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-12-15 19:10:30,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:30,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:30,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 19:10:30,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:30,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash 791766780, now seen corresponding path program 1 times [2023-12-15 19:10:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:30,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551838903] [2023-12-15 19:10:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:30,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-12-15 19:10:31,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:31,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551838903] [2023-12-15 19:10:31,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551838903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:31,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:31,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:10:31,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268709636] [2023-12-15 19:10:31,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:31,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:31,110 INFO L87 Difference]: Start difference. First operand 20127 states and 22938 transitions. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:32,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:32,863 INFO L93 Difference]: Finished difference Result 47501 states and 54290 transitions. [2023-12-15 19:10:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 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 317 [2023-12-15 19:10:32,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:32,893 INFO L225 Difference]: With dead ends: 47501 [2023-12-15 19:10:32,893 INFO L226 Difference]: Without dead ends: 27375 [2023-12-15 19:10:32,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:32,904 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 314 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:32,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 777 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-15 19:10:32,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27375 states. [2023-12-15 19:10:33,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27375 to 26087. [2023-12-15 19:10:33,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26087 states, 26086 states have (on average 1.1315264893046078) internal successors, (29517), 26086 states have internal predecessors, (29517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26087 states to 26087 states and 29517 transitions. [2023-12-15 19:10:33,169 INFO L78 Accepts]: Start accepts. Automaton has 26087 states and 29517 transitions. Word has length 317 [2023-12-15 19:10:33,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:33,169 INFO L495 AbstractCegarLoop]: Abstraction has 26087 states and 29517 transitions. [2023-12-15 19:10:33,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:33,169 INFO L276 IsEmpty]: Start isEmpty. Operand 26087 states and 29517 transitions. [2023-12-15 19:10:33,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-12-15 19:10:33,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:33,175 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:33,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 19:10:33,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:33,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1734785012, now seen corresponding path program 1 times [2023-12-15 19:10:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:33,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123739094] [2023-12-15 19:10:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 204 proven. 78 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 19:10:33,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:33,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123739094] [2023-12-15 19:10:33,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123739094] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:10:33,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556063178] [2023-12-15 19:10:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:33,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:10:33,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:10:33,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-15 19:10:33,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 19:10:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:33,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-15 19:10:33,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:10:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 204 proven. 78 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 19:10:33,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 19:10:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 19:10:33,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556063178] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-15 19:10:33,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-15 19:10:33,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2023-12-15 19:10:33,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046788826] [2023-12-15 19:10:33,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:33,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:10:33,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:33,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:10:33,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:10:33,954 INFO L87 Difference]: Start difference. First operand 26087 states and 29517 transitions. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:36,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:36,465 INFO L93 Difference]: Finished difference Result 64951 states and 74036 transitions. [2023-12-15 19:10:36,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:10:36,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 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 322 [2023-12-15 19:10:36,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:36,501 INFO L225 Difference]: With dead ends: 64951 [2023-12-15 19:10:36,502 INFO L226 Difference]: Without dead ends: 38440 [2023-12-15 19:10:36,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 641 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-15 19:10:36,521 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 815 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:36,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 197 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-15 19:10:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38440 states. [2023-12-15 19:10:36,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38440 to 34601. [2023-12-15 19:10:36,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34601 states, 34600 states have (on average 1.13742774566474) internal successors, (39355), 34600 states have internal predecessors, (39355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:36,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34601 states to 34601 states and 39355 transitions. [2023-12-15 19:10:36,958 INFO L78 Accepts]: Start accepts. Automaton has 34601 states and 39355 transitions. Word has length 322 [2023-12-15 19:10:36,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:36,959 INFO L495 AbstractCegarLoop]: Abstraction has 34601 states and 39355 transitions. [2023-12-15 19:10:36,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand 34601 states and 39355 transitions. [2023-12-15 19:10:36,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-12-15 19:10:36,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:36,967 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:36,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 19:10:37,173 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 [2023-12-15 19:10:37,173 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:37,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:37,174 INFO L85 PathProgramCache]: Analyzing trace with hash 117004548, now seen corresponding path program 1 times [2023-12-15 19:10:37,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:37,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344130668] [2023-12-15 19:10:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:37,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-12-15 19:10:37,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:37,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344130668] [2023-12-15 19:10:37,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344130668] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:37,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:37,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:10:37,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936331557] [2023-12-15 19:10:37,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:37,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:37,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:37,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:37,478 INFO L87 Difference]: Start difference. First operand 34601 states and 39355 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:39,207 INFO L93 Difference]: Finished difference Result 87944 states and 99520 transitions. [2023-12-15 19:10:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:39,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 447 [2023-12-15 19:10:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:39,263 INFO L225 Difference]: With dead ends: 87944 [2023-12-15 19:10:39,263 INFO L226 Difference]: Without dead ends: 53344 [2023-12-15 19:10:39,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:39,273 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 360 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:39,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 257 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:10:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53344 states. [2023-12-15 19:10:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53344 to 50766. [2023-12-15 19:10:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50766 states, 50765 states have (on average 1.1218950064020488) internal successors, (56953), 50765 states have internal predecessors, (56953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50766 states to 50766 states and 56953 transitions. [2023-12-15 19:10:39,784 INFO L78 Accepts]: Start accepts. Automaton has 50766 states and 56953 transitions. Word has length 447 [2023-12-15 19:10:39,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:39,784 INFO L495 AbstractCegarLoop]: Abstraction has 50766 states and 56953 transitions. [2023-12-15 19:10:39,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 50766 states and 56953 transitions. [2023-12-15 19:10:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-12-15 19:10:39,793 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:39,794 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-15 19:10:39,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 19:10:39,794 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:39,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:39,794 INFO L85 PathProgramCache]: Analyzing trace with hash -210425192, now seen corresponding path program 1 times [2023-12-15 19:10:39,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:39,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631691234] [2023-12-15 19:10:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:39,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:40,218 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 495 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-15 19:10:40,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:40,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631691234] [2023-12-15 19:10:40,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631691234] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:40,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:40,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:10:40,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317121711] [2023-12-15 19:10:40,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:40,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:40,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:40,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:40,219 INFO L87 Difference]: Start difference. First operand 50766 states and 56953 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:41,782 INFO L93 Difference]: Finished difference Result 116043 states and 130399 transitions. [2023-12-15 19:10:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 454 [2023-12-15 19:10:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:41,857 INFO L225 Difference]: With dead ends: 116043 [2023-12-15 19:10:41,858 INFO L226 Difference]: Without dead ends: 65278 [2023-12-15 19:10:41,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:41,890 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 366 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:41,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 779 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:10:41,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65278 states. [2023-12-15 19:10:42,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65278 to 65268. [2023-12-15 19:10:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65268 states, 65267 states have (on average 1.1070219253221383) internal successors, (72252), 65267 states have internal predecessors, (72252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65268 states to 65268 states and 72252 transitions. [2023-12-15 19:10:42,752 INFO L78 Accepts]: Start accepts. Automaton has 65268 states and 72252 transitions. Word has length 454 [2023-12-15 19:10:42,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:42,752 INFO L495 AbstractCegarLoop]: Abstraction has 65268 states and 72252 transitions. [2023-12-15 19:10:42,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:42,752 INFO L276 IsEmpty]: Start isEmpty. Operand 65268 states and 72252 transitions. [2023-12-15 19:10:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-12-15 19:10:42,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:42,761 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:42,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 19:10:42,761 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:42,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1181352669, now seen corresponding path program 1 times [2023-12-15 19:10:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129702741] [2023-12-15 19:10:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 629 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-15 19:10:43,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:43,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129702741] [2023-12-15 19:10:43,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129702741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:43,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:43,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 19:10:43,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695583676] [2023-12-15 19:10:43,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:43,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 19:10:43,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 19:10:43,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:10:43,357 INFO L87 Difference]: Start difference. First operand 65268 states and 72252 transitions. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:45,961 INFO L93 Difference]: Finished difference Result 151863 states and 168110 transitions. [2023-12-15 19:10:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 19:10:45,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 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 456 [2023-12-15 19:10:45,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:46,064 INFO L225 Difference]: With dead ends: 151863 [2023-12-15 19:10:46,064 INFO L226 Difference]: Without dead ends: 86596 [2023-12-15 19:10:46,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 19:10:46,101 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 779 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:46,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 194 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2258 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-15 19:10:46,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86596 states. [2023-12-15 19:10:46,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86596 to 83610. [2023-12-15 19:10:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83610 states, 83609 states have (on average 1.1066870791421977) internal successors, (92529), 83609 states have internal predecessors, (92529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83610 states to 83610 states and 92529 transitions. [2023-12-15 19:10:47,122 INFO L78 Accepts]: Start accepts. Automaton has 83610 states and 92529 transitions. Word has length 456 [2023-12-15 19:10:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:47,122 INFO L495 AbstractCegarLoop]: Abstraction has 83610 states and 92529 transitions. [2023-12-15 19:10:47,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:47,123 INFO L276 IsEmpty]: Start isEmpty. Operand 83610 states and 92529 transitions. [2023-12-15 19:10:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-12-15 19:10:47,130 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:47,130 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-12-15 19:10:47,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 19:10:47,131 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:47,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:47,131 INFO L85 PathProgramCache]: Analyzing trace with hash -885259697, now seen corresponding path program 1 times [2023-12-15 19:10:47,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:47,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731945682] [2023-12-15 19:10:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:47,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 440 proven. 82 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-15 19:10:48,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:48,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731945682] [2023-12-15 19:10:48,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731945682] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:10:48,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828901202] [2023-12-15 19:10:48,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:48,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:10:48,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:10:48,047 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) [2023-12-15 19:10:48,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 19:10:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:48,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:10:48,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:10:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 570 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-15 19:10:48,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:10:48,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828901202] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:48,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:10:48,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-15 19:10:48,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119633145] [2023-12-15 19:10:48,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:48,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:48,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:48,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:48,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:10:48,482 INFO L87 Difference]: Start difference. First operand 83610 states and 92529 transitions. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:50,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:50,164 INFO L93 Difference]: Finished difference Result 174034 states and 192464 transitions. [2023-12-15 19:10:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:50,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 476 [2023-12-15 19:10:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:50,268 INFO L225 Difference]: With dead ends: 174034 [2023-12-15 19:10:50,269 INFO L226 Difference]: Without dead ends: 90425 [2023-12-15 19:10:50,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-15 19:10:50,314 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 348 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:50,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 747 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-15 19:10:50,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90425 states. [2023-12-15 19:10:51,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90425 to 87014. [2023-12-15 19:10:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87014 states, 87013 states have (on average 1.1051796857940768) internal successors, (96165), 87013 states have internal predecessors, (96165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87014 states to 87014 states and 96165 transitions. [2023-12-15 19:10:51,556 INFO L78 Accepts]: Start accepts. Automaton has 87014 states and 96165 transitions. Word has length 476 [2023-12-15 19:10:51,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:51,557 INFO L495 AbstractCegarLoop]: Abstraction has 87014 states and 96165 transitions. [2023-12-15 19:10:51,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 87014 states and 96165 transitions. [2023-12-15 19:10:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2023-12-15 19:10:51,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:51,566 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2023-12-15 19:10:51,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-15 19:10:51,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:10:51,769 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:51,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1196037671, now seen corresponding path program 1 times [2023-12-15 19:10:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451668309] [2023-12-15 19:10:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:51,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 686 backedges. 582 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-15 19:10:52,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:52,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451668309] [2023-12-15 19:10:52,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451668309] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:52,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 19:10:52,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 19:10:52,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240538506] [2023-12-15 19:10:52,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:52,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:52,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:52,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:52,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:52,193 INFO L87 Difference]: Start difference. First operand 87014 states and 96165 transitions. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:54,300 INFO L93 Difference]: Finished difference Result 182567 states and 201474 transitions. [2023-12-15 19:10:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:54,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 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 499 [2023-12-15 19:10:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:54,415 INFO L225 Difference]: With dead ends: 182567 [2023-12-15 19:10:54,415 INFO L226 Difference]: Without dead ends: 95554 [2023-12-15 19:10:54,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 19:10:54,459 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 406 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:54,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 200 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-15 19:10:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95554 states. [2023-12-15 19:10:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95554 to 85739. [2023-12-15 19:10:55,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85739 states, 85738 states have (on average 1.1051225827521052) internal successors, (94751), 85738 states have internal predecessors, (94751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85739 states to 85739 states and 94751 transitions. [2023-12-15 19:10:55,518 INFO L78 Accepts]: Start accepts. Automaton has 85739 states and 94751 transitions. Word has length 499 [2023-12-15 19:10:55,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 19:10:55,518 INFO L495 AbstractCegarLoop]: Abstraction has 85739 states and 94751 transitions. [2023-12-15 19:10:55,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:55,518 INFO L276 IsEmpty]: Start isEmpty. Operand 85739 states and 94751 transitions. [2023-12-15 19:10:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-12-15 19:10:55,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 19:10:55,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 19:10:55,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 19:10:55,529 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 19:10:55,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 19:10:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1807918178, now seen corresponding path program 1 times [2023-12-15 19:10:55,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 19:10:55,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470301794] [2023-12-15 19:10:55,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:55,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 19:10:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 485 proven. 82 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-15 19:10:56,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 19:10:56,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470301794] [2023-12-15 19:10:56,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470301794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 19:10:56,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597127047] [2023-12-15 19:10:56,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 19:10:56,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:10:56,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 19:10:56,393 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) [2023-12-15 19:10:56,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 19:10:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 19:10:56,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-15 19:10:56,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 19:10:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 644 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-12-15 19:10:57,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-15 19:10:57,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597127047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 19:10:57,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-15 19:10:57,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-15 19:10:57,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529417929] [2023-12-15 19:10:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 19:10:57,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 19:10:57,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 19:10:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 19:10:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:10:57,579 INFO L87 Difference]: Start difference. First operand 85739 states and 94751 transitions. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:10:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 19:10:59,451 INFO L93 Difference]: Finished difference Result 193223 states and 213412 transitions. [2023-12-15 19:10:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 19:10:59,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 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 534 [2023-12-15 19:10:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 19:10:59,583 INFO L225 Difference]: With dead ends: 193223 [2023-12-15 19:10:59,583 INFO L226 Difference]: Without dead ends: 107485 [2023-12-15 19:10:59,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 19:10:59,639 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 310 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-15 19:10:59,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 329 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-15 19:10:59,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107485 states. [2023-12-15 19:11:00,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107485 to 104916. Received shutdown request... [2023-12-15 19:11:00,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104916 states, 104915 states have (on average 1.0931420673878853) internal successors, (114687), 104915 states have internal predecessors, (114687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 19:11:00,833 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 19:11:00,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-15 19:11:00,843 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:11:00,843 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 19:11:01,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 19:11:01,039 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-15 19:11:01,042 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] [2023-12-15 19:11:01,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 19:11:01,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 07:11:01 BoogieIcfgContainer [2023-12-15 19:11:01,045 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 19:11:01,045 INFO L158 Benchmark]: Toolchain (without parser) took 57744.11ms. Allocated memory was 191.9MB in the beginning and 4.5GB in the end (delta: 4.3GB). Free memory was 141.9MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-15 19:11:01,045 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 191.9MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 19:11:01,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 869.27ms. Allocated memory was 191.9MB in the beginning and 245.4MB in the end (delta: 53.5MB). Free memory was 141.5MB in the beginning and 133.0MB in the end (delta: 8.4MB). Peak memory consumption was 62.8MB. Max. memory is 8.0GB. [2023-12-15 19:11:01,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 250.63ms. Allocated memory is still 245.4MB. Free memory was 133.0MB in the beginning and 154.8MB in the end (delta: -21.8MB). Peak memory consumption was 40.7MB. Max. memory is 8.0GB. [2023-12-15 19:11:01,046 INFO L158 Benchmark]: Boogie Preprocessor took 397.82ms. Allocated memory is still 245.4MB. Free memory was 154.8MB in the beginning and 147.1MB in the end (delta: 7.7MB). Peak memory consumption was 129.3MB. Max. memory is 8.0GB. [2023-12-15 19:11:01,046 INFO L158 Benchmark]: RCFGBuilder took 2735.21ms. Allocated memory was 245.4MB in the beginning and 546.3MB in the end (delta: 300.9MB). Free memory was 147.1MB in the beginning and 442.3MB in the end (delta: -295.2MB). Peak memory consumption was 151.5MB. Max. memory is 8.0GB. [2023-12-15 19:11:01,046 INFO L158 Benchmark]: TraceAbstraction took 53484.00ms. Allocated memory was 546.3MB in the beginning and 4.5GB in the end (delta: 4.0GB). Free memory was 441.8MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-15 19:11:01,047 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 191.9MB. Free memory is still 139.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 869.27ms. Allocated memory was 191.9MB in the beginning and 245.4MB in the end (delta: 53.5MB). Free memory was 141.5MB in the beginning and 133.0MB in the end (delta: 8.4MB). Peak memory consumption was 62.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 250.63ms. Allocated memory is still 245.4MB. Free memory was 133.0MB in the beginning and 154.8MB in the end (delta: -21.8MB). Peak memory consumption was 40.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 397.82ms. Allocated memory is still 245.4MB. Free memory was 154.8MB in the beginning and 147.1MB in the end (delta: 7.7MB). Peak memory consumption was 129.3MB. Max. memory is 8.0GB. * RCFGBuilder took 2735.21ms. Allocated memory was 245.4MB in the beginning and 546.3MB in the end (delta: 300.9MB). Free memory was 147.1MB in the beginning and 442.3MB in the end (delta: -295.2MB). Peak memory consumption was 151.5MB. Max. memory is 8.0GB. * TraceAbstraction took 53484.00ms. Allocated memory was 546.3MB in the beginning and 4.5GB in the end (delta: 4.0GB). Free memory was 441.8MB in the beginning and 2.8GB in the end (delta: -2.4GB). Peak memory consumption was 1.9GB. 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: 90]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 90). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 528 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 53.4s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 36.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9721 SdHoareTripleChecker+Valid, 31.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9721 mSDsluCounter, 9510 SdHoareTripleChecker+Invalid, 26.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1056 mSDsCounter, 6047 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26109 IncrementalHoareTripleChecker+Invalid, 32156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6047 mSolverCounterUnsat, 8454 mSDtfsCounter, 26109 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2191 GetRequests, 2156 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87014occurred in iteration=17, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 29972 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 6801 NumberOfCodeBlocks, 6801 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 7341 ConstructedInterpolants, 0 QuantifiedInterpolants, 21982 SizeOfPredicates, 2 NumberOfNonLiveVariables, 2111 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 25 InterpolantComputations, 19 PerfectInterpolantSequences, 7360/7844 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