/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:43:46,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:43:46,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:43:46,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:43:46,692 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:43:46,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:43:46,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:43:46,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:43:46,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:43:46,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:43:46,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:43:46,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:43:46,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:43:46,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:43:46,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:43:46,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:43:46,712 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:43:46,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:43:46,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:43:46,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:43:46,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:43:46,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:43:46,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:43:46,713 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:43:46,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:43:46,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:43:46,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:43:46,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:43:46,714 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:43:46,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:43:46,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:43:46,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:43:46,715 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:43:46,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:43:46,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:43:46,715 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:43:46,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:43:46,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:43:46,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:43:46,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:43:46,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:43:46,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:43:46,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:43:46,974 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:43:46,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:43:47,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a49d8a5/4eb6c04ab2d14011905d3f788d945350/FLAGe7942bb34 [2022-01-10 01:43:47,501 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:43:47,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:43:47,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a49d8a5/4eb6c04ab2d14011905d3f788d945350/FLAGe7942bb34 [2022-01-10 01:43:48,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a49d8a5/4eb6c04ab2d14011905d3f788d945350 [2022-01-10 01:43:48,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:43:48,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:43:48,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:43:48,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:43:48,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:43:48,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577cc5d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48, skipping insertion in model container [2022-01-10 01:43:48,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:43:48,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:43:48,303 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10668,10681] [2022-01-10 01:43:48,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:43:48,368 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:43:48,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[10668,10681] [2022-01-10 01:43:48,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:43:48,482 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:43:48,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48 WrapperNode [2022-01-10 01:43:48,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:43:48,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:43:48,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:43:48,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:43:48,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,570 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 952 [2022-01-10 01:43:48,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:43:48,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:43:48,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:43:48,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:43:48,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:43:48,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:43:48,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:43:48,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:43:48,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (1/1) ... [2022-01-10 01:43:48,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:43:48,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:43:48,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:43:48,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:43:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:43:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:43:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:43:48,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:43:48,917 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:43:48,919 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:43:49,642 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:43:49,654 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:43:49,655 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:43:49,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:49 BoogieIcfgContainer [2022-01-10 01:43:49,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:43:49,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:43:49,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:43:49,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:43:49,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:43:48" (1/3) ... [2022-01-10 01:43:49,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15200db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:43:49, skipping insertion in model container [2022-01-10 01:43:49,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:43:48" (2/3) ... [2022-01-10 01:43:49,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15200db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:43:49, skipping insertion in model container [2022-01-10 01:43:49,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:43:49" (3/3) ... [2022-01-10 01:43:49,664 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:43:49,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:43:49,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:43:49,709 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:43:49,715 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:43:49,715 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:43:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 247 states, 245 states have (on average 1.7591836734693878) internal successors, (431), 246 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:49,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:43:49,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:49,745 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:49,745 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:49,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1005429677, now seen corresponding path program 1 times [2022-01-10 01:43:49,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:49,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070489289] [2022-01-10 01:43:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:49,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:50,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:50,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070489289] [2022-01-10 01:43:50,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070489289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:50,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:50,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:50,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931750332] [2022-01-10 01:43:50,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:50,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:43:50,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:43:50,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:43:50,264 INFO L87 Difference]: Start difference. First operand has 247 states, 245 states have (on average 1.7591836734693878) internal successors, (431), 246 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:50,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:50,457 INFO L93 Difference]: Finished difference Result 714 states and 1248 transitions. [2022-01-10 01:43:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:43:50,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-01-10 01:43:50,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:50,472 INFO L225 Difference]: With dead ends: 714 [2022-01-10 01:43:50,473 INFO L226 Difference]: Without dead ends: 470 [2022-01-10 01:43:50,476 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:50,479 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 1005 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:50,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 993 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:43:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-01-10 01:43:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 468. [2022-01-10 01:43:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 1.4753747323340471) internal successors, (689), 467 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 689 transitions. [2022-01-10 01:43:50,558 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 689 transitions. Word has length 101 [2022-01-10 01:43:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:50,559 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 689 transitions. [2022-01-10 01:43:50,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 689 transitions. [2022-01-10 01:43:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 01:43:50,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:50,563 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:50,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:43:50,563 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:50,564 INFO L85 PathProgramCache]: Analyzing trace with hash -769716679, now seen corresponding path program 1 times [2022-01-10 01:43:50,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:50,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884964843] [2022-01-10 01:43:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:50,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:50,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:50,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884964843] [2022-01-10 01:43:50,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884964843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:50,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:50,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:50,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767564199] [2022-01-10 01:43:50,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:50,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:50,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:50,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:50,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:50,692 INFO L87 Difference]: Start difference. First operand 468 states and 689 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:50,767 INFO L93 Difference]: Finished difference Result 1366 states and 2005 transitions. [2022-01-10 01:43:50,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:50,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-01-10 01:43:50,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:50,777 INFO L225 Difference]: With dead ends: 1366 [2022-01-10 01:43:50,777 INFO L226 Difference]: Without dead ends: 926 [2022-01-10 01:43:50,784 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:50,785 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 352 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:50,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1041 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:50,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-01-10 01:43:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 470. [2022-01-10 01:43:50,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.4733475479744136) internal successors, (691), 469 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:50,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 691 transitions. [2022-01-10 01:43:50,846 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 691 transitions. Word has length 102 [2022-01-10 01:43:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:50,848 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 691 transitions. [2022-01-10 01:43:50,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 691 transitions. [2022-01-10 01:43:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 01:43:50,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:50,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:50,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:43:50,853 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:50,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1142488916, now seen corresponding path program 1 times [2022-01-10 01:43:50,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:50,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880650992] [2022-01-10 01:43:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:50,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:50,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:50,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880650992] [2022-01-10 01:43:50,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880650992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:50,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:50,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:50,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343089349] [2022-01-10 01:43:50,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:50,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:50,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:50,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:50,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:50,939 INFO L87 Difference]: Start difference. First operand 470 states and 691 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:51,020 INFO L93 Difference]: Finished difference Result 977 states and 1492 transitions. [2022-01-10 01:43:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-10 01:43:51,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:51,025 INFO L225 Difference]: With dead ends: 977 [2022-01-10 01:43:51,025 INFO L226 Difference]: Without dead ends: 634 [2022-01-10 01:43:51,026 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:51,031 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 233 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:51,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 745 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-01-10 01:43:51,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 618. [2022-01-10 01:43:51,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 1.5153970826580228) internal successors, (935), 617 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) [2022-01-10 01:43:51,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 935 transitions. [2022-01-10 01:43:51,089 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 935 transitions. Word has length 103 [2022-01-10 01:43:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:51,090 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 935 transitions. [2022-01-10 01:43:51,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 935 transitions. [2022-01-10 01:43:51,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 01:43:51,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:51,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:51,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:43:51,097 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:51,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:51,098 INFO L85 PathProgramCache]: Analyzing trace with hash -362955380, now seen corresponding path program 1 times [2022-01-10 01:43:51,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:51,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446104943] [2022-01-10 01:43:51,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:51,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:51,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:51,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446104943] [2022-01-10 01:43:51,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446104943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:51,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:51,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:51,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38096296] [2022-01-10 01:43:51,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:51,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:43:51,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:43:51,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:43:51,282 INFO L87 Difference]: Start difference. First operand 618 states and 935 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:51,493 INFO L93 Difference]: Finished difference Result 1766 states and 2661 transitions. [2022-01-10 01:43:51,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:43:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-01-10 01:43:51,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:51,501 INFO L225 Difference]: With dead ends: 1766 [2022-01-10 01:43:51,501 INFO L226 Difference]: Without dead ends: 1178 [2022-01-10 01:43:51,502 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:51,508 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 760 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:51,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 858 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:51,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2022-01-10 01:43:51,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1176. [2022-01-10 01:43:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1175 states have (on average 1.4978723404255319) internal successors, (1760), 1175 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:51,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1760 transitions. [2022-01-10 01:43:51,641 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1760 transitions. Word has length 103 [2022-01-10 01:43:51,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:51,642 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1760 transitions. [2022-01-10 01:43:51,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:51,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1760 transitions. [2022-01-10 01:43:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 01:43:51,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:51,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:51,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:43:51,645 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1797210952, now seen corresponding path program 1 times [2022-01-10 01:43:51,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:51,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867794351] [2022-01-10 01:43:51,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:51,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:51,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:51,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867794351] [2022-01-10 01:43:51,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867794351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:51,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:51,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:51,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390105350] [2022-01-10 01:43:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:51,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:51,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:51,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:51,707 INFO L87 Difference]: Start difference. First operand 1176 states and 1760 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:51,917 INFO L93 Difference]: Finished difference Result 3452 states and 5160 transitions. [2022-01-10 01:43:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:51,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 01:43:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:51,929 INFO L225 Difference]: With dead ends: 3452 [2022-01-10 01:43:51,929 INFO L226 Difference]: Without dead ends: 2320 [2022-01-10 01:43:51,931 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:51,932 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 336 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:51,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 1046 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2022-01-10 01:43:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1180. [2022-01-10 01:43:52,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 1.4961832061068703) internal successors, (1764), 1179 states have internal predecessors, (1764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1764 transitions. [2022-01-10 01:43:52,052 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1764 transitions. Word has length 104 [2022-01-10 01:43:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:52,052 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 1764 transitions. [2022-01-10 01:43:52,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1764 transitions. [2022-01-10 01:43:52,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 01:43:52,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:52,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:52,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:43:52,055 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:52,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 978474865, now seen corresponding path program 1 times [2022-01-10 01:43:52,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:52,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580119531] [2022-01-10 01:43:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:52,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:52,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:52,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:52,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580119531] [2022-01-10 01:43:52,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580119531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:52,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:52,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:52,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762276366] [2022-01-10 01:43:52,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:52,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:52,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:52,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:52,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:52,120 INFO L87 Difference]: Start difference. First operand 1180 states and 1764 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:52,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:52,332 INFO L93 Difference]: Finished difference Result 2640 states and 4114 transitions. [2022-01-10 01:43:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:52,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 01:43:52,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:52,340 INFO L225 Difference]: With dead ends: 2640 [2022-01-10 01:43:52,340 INFO L226 Difference]: Without dead ends: 1744 [2022-01-10 01:43:52,341 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:52,343 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 241 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:52,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 729 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:52,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-01-10 01:43:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1690. [2022-01-10 01:43:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.5429248075784487) internal successors, (2606), 1689 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2606 transitions. [2022-01-10 01:43:52,502 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2606 transitions. Word has length 105 [2022-01-10 01:43:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:52,502 INFO L470 AbstractCegarLoop]: Abstraction has 1690 states and 2606 transitions. [2022-01-10 01:43:52,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2606 transitions. [2022-01-10 01:43:52,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 01:43:52,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:52,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:52,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:43:52,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1850549439, now seen corresponding path program 1 times [2022-01-10 01:43:52,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:52,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400239235] [2022-01-10 01:43:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:52,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:52,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:52,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400239235] [2022-01-10 01:43:52,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400239235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:52,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:52,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:52,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399782053] [2022-01-10 01:43:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:52,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:52,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:52,572 INFO L87 Difference]: Start difference. First operand 1690 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:52,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:52,880 INFO L93 Difference]: Finished difference Result 4594 states and 7162 transitions. [2022-01-10 01:43:52,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:52,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 01:43:52,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:52,895 INFO L225 Difference]: With dead ends: 4594 [2022-01-10 01:43:52,896 INFO L226 Difference]: Without dead ends: 3236 [2022-01-10 01:43:52,899 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:52,900 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 280 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:52,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [280 Valid, 980 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-01-10 01:43:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3234. [2022-01-10 01:43:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3233 states have (on average 1.530467058459635) internal successors, (4948), 3233 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4948 transitions. [2022-01-10 01:43:53,218 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4948 transitions. Word has length 105 [2022-01-10 01:43:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:53,219 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 4948 transitions. [2022-01-10 01:43:53,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:53,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4948 transitions. [2022-01-10 01:43:53,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 01:43:53,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:53,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:53,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:43:53,231 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash -417340030, now seen corresponding path program 1 times [2022-01-10 01:43:53,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:53,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133766750] [2022-01-10 01:43:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:53,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:53,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:53,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133766750] [2022-01-10 01:43:53,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133766750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:53,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:53,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:43:53,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251318064] [2022-01-10 01:43:53,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:53,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:43:53,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:43:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:53,382 INFO L87 Difference]: Start difference. First operand 3234 states and 4948 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:53,929 INFO L93 Difference]: Finished difference Result 8716 states and 13341 transitions. [2022-01-10 01:43:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:43:53,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 01:43:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:53,951 INFO L225 Difference]: With dead ends: 8716 [2022-01-10 01:43:53,951 INFO L226 Difference]: Without dead ends: 5519 [2022-01-10 01:43:53,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:43:53,960 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 653 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:53,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 1218 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:53,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2022-01-10 01:43:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5517. [2022-01-10 01:43:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5517 states, 5516 states have (on average 1.5159535895576504) internal successors, (8362), 5516 states have internal predecessors, (8362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 8362 transitions. [2022-01-10 01:43:54,523 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 8362 transitions. Word has length 105 [2022-01-10 01:43:54,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:54,524 INFO L470 AbstractCegarLoop]: Abstraction has 5517 states and 8362 transitions. [2022-01-10 01:43:54,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 8362 transitions. [2022-01-10 01:43:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 01:43:54,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:54,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:54,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:43:54,529 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:54,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash 540693227, now seen corresponding path program 1 times [2022-01-10 01:43:54,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:54,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000012021] [2022-01-10 01:43:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:54,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:54,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:54,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:54,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000012021] [2022-01-10 01:43:54,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000012021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:54,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:54,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:54,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968106235] [2022-01-10 01:43:54,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:54,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:43:54,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:54,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:43:54,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:43:54,638 INFO L87 Difference]: Start difference. First operand 5517 states and 8362 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:55,298 INFO L93 Difference]: Finished difference Result 11296 states and 16989 transitions. [2022-01-10 01:43:55,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:43:55,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 01:43:55,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:55,320 INFO L225 Difference]: With dead ends: 11296 [2022-01-10 01:43:55,320 INFO L226 Difference]: Without dead ends: 5896 [2022-01-10 01:43:55,328 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:55,330 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 698 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:55,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 881 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5896 states. [2022-01-10 01:43:55,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5896 to 5741. [2022-01-10 01:43:55,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5740 states have (on average 1.4993031358885018) internal successors, (8606), 5740 states have internal predecessors, (8606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 8606 transitions. [2022-01-10 01:43:55,823 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 8606 transitions. Word has length 105 [2022-01-10 01:43:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:55,823 INFO L470 AbstractCegarLoop]: Abstraction has 5741 states and 8606 transitions. [2022-01-10 01:43:55,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:55,824 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 8606 transitions. [2022-01-10 01:43:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 01:43:55,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:55,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:55,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:43:55,828 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:55,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash 138743479, now seen corresponding path program 1 times [2022-01-10 01:43:55,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:55,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42342154] [2022-01-10 01:43:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:55,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:55,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:55,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:55,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42342154] [2022-01-10 01:43:55,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42342154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:55,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:55,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:55,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500898504] [2022-01-10 01:43:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:55,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:55,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:55,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:55,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:55,866 INFO L87 Difference]: Start difference. First operand 5741 states and 8606 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:56,855 INFO L93 Difference]: Finished difference Result 16497 states and 24904 transitions. [2022-01-10 01:43:56,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:56,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 01:43:56,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:56,888 INFO L225 Difference]: With dead ends: 16497 [2022-01-10 01:43:56,888 INFO L226 Difference]: Without dead ends: 11357 [2022-01-10 01:43:56,899 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:56,900 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 320 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:56,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 826 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:56,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11357 states. [2022-01-10 01:43:57,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11357 to 5757. [2022-01-10 01:43:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5757 states, 5756 states have (on average 1.4979152189020153) internal successors, (8622), 5756 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5757 states to 5757 states and 8622 transitions. [2022-01-10 01:43:57,501 INFO L78 Accepts]: Start accepts. Automaton has 5757 states and 8622 transitions. Word has length 106 [2022-01-10 01:43:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:57,501 INFO L470 AbstractCegarLoop]: Abstraction has 5757 states and 8622 transitions. [2022-01-10 01:43:57,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:57,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5757 states and 8622 transitions. [2022-01-10 01:43:57,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 01:43:57,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:57,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:57,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:43:57,506 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:57,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2082987062, now seen corresponding path program 1 times [2022-01-10 01:43:57,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:57,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063378492] [2022-01-10 01:43:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:57,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:57,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:57,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063378492] [2022-01-10 01:43:57,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063378492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:57,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:57,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:43:57,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512897157] [2022-01-10 01:43:57,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:57,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:43:57,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:43:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:43:57,581 INFO L87 Difference]: Start difference. First operand 5757 states and 8622 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:58,205 INFO L93 Difference]: Finished difference Result 11504 states and 17230 transitions. [2022-01-10 01:43:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:43:58,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 01:43:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:58,218 INFO L225 Difference]: With dead ends: 11504 [2022-01-10 01:43:58,218 INFO L226 Difference]: Without dead ends: 5755 [2022-01-10 01:43:58,229 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:58,230 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 65 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:58,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1110 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:58,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5755 states. [2022-01-10 01:43:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5755 to 5755. [2022-01-10 01:43:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5755 states, 5754 states have (on average 1.4977407021202642) internal successors, (8618), 5754 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5755 states to 5755 states and 8618 transitions. [2022-01-10 01:43:58,721 INFO L78 Accepts]: Start accepts. Automaton has 5755 states and 8618 transitions. Word has length 107 [2022-01-10 01:43:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:43:58,722 INFO L470 AbstractCegarLoop]: Abstraction has 5755 states and 8618 transitions. [2022-01-10 01:43:58,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5755 states and 8618 transitions. [2022-01-10 01:43:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 01:43:58,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:43:58,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:43:58,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:43:58,727 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:43:58,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:43:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash 248103490, now seen corresponding path program 1 times [2022-01-10 01:43:58,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:43:58,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172930851] [2022-01-10 01:43:58,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:43:58,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:43:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:43:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:43:58,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:43:58,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172930851] [2022-01-10 01:43:58,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172930851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:43:58,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:43:58,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:43:58,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952358971] [2022-01-10 01:43:58,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:43:58,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:43:58,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:43:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:43:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:43:58,773 INFO L87 Difference]: Start difference. First operand 5755 states and 8618 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:43:59,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:43:59,620 INFO L93 Difference]: Finished difference Result 13045 states and 19796 transitions. [2022-01-10 01:43:59,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:43:59,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 01:43:59,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:43:59,637 INFO L225 Difference]: With dead ends: 13045 [2022-01-10 01:43:59,637 INFO L226 Difference]: Without dead ends: 8501 [2022-01-10 01:43:59,643 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:43:59,644 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 288 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:43:59,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 748 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:43:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8501 states. [2022-01-10 01:44:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8501 to 8499. [2022-01-10 01:44:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8499 states, 8498 states have (on average 1.476818074841139) internal successors, (12550), 8498 states have internal predecessors, (12550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8499 states to 8499 states and 12550 transitions. [2022-01-10 01:44:00,454 INFO L78 Accepts]: Start accepts. Automaton has 8499 states and 12550 transitions. Word has length 107 [2022-01-10 01:44:00,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:00,455 INFO L470 AbstractCegarLoop]: Abstraction has 8499 states and 12550 transitions. [2022-01-10 01:44:00,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:00,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8499 states and 12550 transitions. [2022-01-10 01:44:00,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 01:44:00,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:00,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:00,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:44:00,462 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:00,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:00,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1043025895, now seen corresponding path program 1 times [2022-01-10 01:44:00,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:00,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933989358] [2022-01-10 01:44:00,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:00,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:00,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:00,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933989358] [2022-01-10 01:44:00,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933989358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:00,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:00,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:44:00,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954632091] [2022-01-10 01:44:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:00,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:44:00,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:44:00,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:44:00,513 INFO L87 Difference]: Start difference. First operand 8499 states and 12550 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) [2022-01-10 01:44:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:01,607 INFO L93 Difference]: Finished difference Result 18359 states and 28094 transitions. [2022-01-10 01:44:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:44:01,608 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 109 [2022-01-10 01:44:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:01,633 INFO L225 Difference]: With dead ends: 18359 [2022-01-10 01:44:01,633 INFO L226 Difference]: Without dead ends: 12642 [2022-01-10 01:44:01,642 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:44:01,642 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 245 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:01,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 712 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:01,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12642 states. [2022-01-10 01:44:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12642 to 12180. [2022-01-10 01:44:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12180 states, 12179 states have (on average 1.5104688398062238) internal successors, (18396), 12179 states have internal predecessors, (18396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 18396 transitions. [2022-01-10 01:44:02,741 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 18396 transitions. Word has length 109 [2022-01-10 01:44:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:02,742 INFO L470 AbstractCegarLoop]: Abstraction has 12180 states and 18396 transitions. [2022-01-10 01:44:02,742 INFO L471 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) [2022-01-10 01:44:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 18396 transitions. [2022-01-10 01:44:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 01:44:02,748 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:02,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:02,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:44:02,748 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash 211922380, now seen corresponding path program 1 times [2022-01-10 01:44:02,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:02,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642379791] [2022-01-10 01:44:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:02,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:02,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:02,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642379791] [2022-01-10 01:44:02,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642379791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:02,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:02,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:02,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141472492] [2022-01-10 01:44:02,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:02,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:44:02,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:02,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:44:02,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:44:02,808 INFO L87 Difference]: Start difference. First operand 12180 states and 18396 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:04,185 INFO L93 Difference]: Finished difference Result 23210 states and 35482 transitions. [2022-01-10 01:44:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:44:04,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 01:44:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:04,207 INFO L225 Difference]: With dead ends: 23210 [2022-01-10 01:44:04,208 INFO L226 Difference]: Without dead ends: 12180 [2022-01-10 01:44:04,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:44:04,227 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 886 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:04,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [886 Valid, 374 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:44:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12180 states. [2022-01-10 01:44:05,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12180 to 12180. [2022-01-10 01:44:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12180 states, 12179 states have (on average 1.496838820921258) internal successors, (18230), 12179 states have internal predecessors, (18230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12180 states to 12180 states and 18230 transitions. [2022-01-10 01:44:05,392 INFO L78 Accepts]: Start accepts. Automaton has 12180 states and 18230 transitions. Word has length 110 [2022-01-10 01:44:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:05,392 INFO L470 AbstractCegarLoop]: Abstraction has 12180 states and 18230 transitions. [2022-01-10 01:44:05,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 12180 states and 18230 transitions. [2022-01-10 01:44:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 01:44:05,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:05,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:05,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:44:05,399 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:05,400 INFO L85 PathProgramCache]: Analyzing trace with hash 410270887, now seen corresponding path program 1 times [2022-01-10 01:44:05,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:05,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65399692] [2022-01-10 01:44:05,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:05,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:05,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:05,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65399692] [2022-01-10 01:44:05,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65399692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:05,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:05,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:05,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819016070] [2022-01-10 01:44:05,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:05,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:05,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:05,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:05,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:05,493 INFO L87 Difference]: Start difference. First operand 12180 states and 18230 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:07,453 INFO L93 Difference]: Finished difference Result 30759 states and 46380 transitions. [2022-01-10 01:44:07,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:07,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-10 01:44:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:07,491 INFO L225 Difference]: With dead ends: 30759 [2022-01-10 01:44:07,491 INFO L226 Difference]: Without dead ends: 18927 [2022-01-10 01:44:07,513 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:44:07,515 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 695 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:07,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 890 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18927 states. [2022-01-10 01:44:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18927 to 18925. [2022-01-10 01:44:09,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18925 states, 18924 states have (on average 1.4930247305009512) internal successors, (28254), 18924 states have internal predecessors, (28254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:09,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18925 states to 18925 states and 28254 transitions. [2022-01-10 01:44:09,608 INFO L78 Accepts]: Start accepts. Automaton has 18925 states and 28254 transitions. Word has length 110 [2022-01-10 01:44:09,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:09,609 INFO L470 AbstractCegarLoop]: Abstraction has 18925 states and 28254 transitions. [2022-01-10 01:44:09,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 18925 states and 28254 transitions. [2022-01-10 01:44:09,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 01:44:09,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:09,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:09,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:44:09,618 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:09,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:09,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2110822017, now seen corresponding path program 1 times [2022-01-10 01:44:09,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:09,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202078256] [2022-01-10 01:44:09,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:09,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:09,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:09,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:09,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202078256] [2022-01-10 01:44:09,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202078256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:09,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:09,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:09,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116222593] [2022-01-10 01:44:09,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:09,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:09,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:09,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:09,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:09,719 INFO L87 Difference]: Start difference. First operand 18925 states and 28254 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:11,304 INFO L93 Difference]: Finished difference Result 29923 states and 44851 transitions. [2022-01-10 01:44:11,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:11,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-01-10 01:44:11,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:11,335 INFO L225 Difference]: With dead ends: 29923 [2022-01-10 01:44:11,336 INFO L226 Difference]: Without dead ends: 15895 [2022-01-10 01:44:11,359 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:44:11,360 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 53 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:11,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1076 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15895 states. [2022-01-10 01:44:13,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15895 to 15895. [2022-01-10 01:44:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15895 states, 15894 states have (on average 1.4882345539197182) internal successors, (23654), 15894 states have internal predecessors, (23654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:13,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15895 states to 15895 states and 23654 transitions. [2022-01-10 01:44:13,253 INFO L78 Accepts]: Start accepts. Automaton has 15895 states and 23654 transitions. Word has length 112 [2022-01-10 01:44:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:13,254 INFO L470 AbstractCegarLoop]: Abstraction has 15895 states and 23654 transitions. [2022-01-10 01:44:13,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:13,254 INFO L276 IsEmpty]: Start isEmpty. Operand 15895 states and 23654 transitions. [2022-01-10 01:44:13,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 01:44:13,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:13,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:13,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:44:13,262 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:13,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:13,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2111608284, now seen corresponding path program 1 times [2022-01-10 01:44:13,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:13,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769303398] [2022-01-10 01:44:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:13,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:13,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:13,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769303398] [2022-01-10 01:44:13,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769303398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:13,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:13,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:13,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300426527] [2022-01-10 01:44:13,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:13,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:13,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:13,363 INFO L87 Difference]: Start difference. First operand 15895 states and 23654 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:14,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:14,615 INFO L93 Difference]: Finished difference Result 27467 states and 40894 transitions. [2022-01-10 01:44:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:14,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-10 01:44:14,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:14,635 INFO L225 Difference]: With dead ends: 27467 [2022-01-10 01:44:14,635 INFO L226 Difference]: Without dead ends: 11642 [2022-01-10 01:44:14,648 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:44:14,648 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 43 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:14,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 1060 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:14,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2022-01-10 01:44:15,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 11642. [2022-01-10 01:44:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11642 states, 11641 states have (on average 1.4883601065200585) internal successors, (17326), 11641 states have internal predecessors, (17326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:16,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11642 states to 11642 states and 17326 transitions. [2022-01-10 01:44:16,002 INFO L78 Accepts]: Start accepts. Automaton has 11642 states and 17326 transitions. Word has length 115 [2022-01-10 01:44:16,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:16,002 INFO L470 AbstractCegarLoop]: Abstraction has 11642 states and 17326 transitions. [2022-01-10 01:44:16,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 11642 states and 17326 transitions. [2022-01-10 01:44:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 01:44:16,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:16,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:16,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:44:16,008 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -993915098, now seen corresponding path program 1 times [2022-01-10 01:44:16,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:16,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754063486] [2022-01-10 01:44:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:16,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:16,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:16,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754063486] [2022-01-10 01:44:16,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754063486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:16,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:16,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:16,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726694801] [2022-01-10 01:44:16,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:16,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:44:16,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:44:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:44:16,091 INFO L87 Difference]: Start difference. First operand 11642 states and 17326 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:17,365 INFO L93 Difference]: Finished difference Result 20313 states and 30222 transitions. [2022-01-10 01:44:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:17,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 01:44:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:17,380 INFO L225 Difference]: With dead ends: 20313 [2022-01-10 01:44:17,380 INFO L226 Difference]: Without dead ends: 11632 [2022-01-10 01:44:17,386 INFO L932 BasicCegarLoop]: 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 [2022-01-10 01:44:17,387 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 23 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:17,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1042 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:17,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11632 states. [2022-01-10 01:44:18,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11632 to 11632. [2022-01-10 01:44:18,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11632 states, 11631 states have (on average 1.4883500988736995) internal successors, (17311), 11631 states have internal predecessors, (17311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11632 states to 11632 states and 17311 transitions. [2022-01-10 01:44:18,645 INFO L78 Accepts]: Start accepts. Automaton has 11632 states and 17311 transitions. Word has length 120 [2022-01-10 01:44:18,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:18,645 INFO L470 AbstractCegarLoop]: Abstraction has 11632 states and 17311 transitions. [2022-01-10 01:44:18,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 11632 states and 17311 transitions. [2022-01-10 01:44:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 01:44:18,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:18,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:18,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:44:18,650 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:18,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1394285578, now seen corresponding path program 1 times [2022-01-10 01:44:18,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:18,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156978150] [2022-01-10 01:44:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:18,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:18,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:18,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156978150] [2022-01-10 01:44:18,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156978150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:18,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:18,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:44:18,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476812397] [2022-01-10 01:44:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:18,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:44:18,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:18,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:44:18,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:44:18,769 INFO L87 Difference]: Start difference. First operand 11632 states and 17311 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:20,089 INFO L93 Difference]: Finished difference Result 22352 states and 33242 transitions. [2022-01-10 01:44:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:20,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 01:44:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:20,103 INFO L225 Difference]: With dead ends: 22352 [2022-01-10 01:44:20,104 INFO L226 Difference]: Without dead ends: 10976 [2022-01-10 01:44:20,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:44:20,112 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 882 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:20,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 827 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:44:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10976 states. [2022-01-10 01:44:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10976 to 10819. [2022-01-10 01:44:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.4815122943242744) internal successors, (16027), 10818 states have internal predecessors, (16027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 16027 transitions. [2022-01-10 01:44:21,251 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 16027 transitions. Word has length 120 [2022-01-10 01:44:21,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:21,251 INFO L470 AbstractCegarLoop]: Abstraction has 10819 states and 16027 transitions. [2022-01-10 01:44:21,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 16027 transitions. [2022-01-10 01:44:21,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 01:44:21,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:21,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:21,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:44:21,256 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:21,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1343086903, now seen corresponding path program 1 times [2022-01-10 01:44:21,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:21,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913325400] [2022-01-10 01:44:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:21,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:21,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:21,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913325400] [2022-01-10 01:44:21,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913325400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:21,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:21,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:21,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719895794] [2022-01-10 01:44:21,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:21,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:44:21,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:21,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:44:21,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:44:21,315 INFO L87 Difference]: Start difference. First operand 10819 states and 16027 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:22,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:22,688 INFO L93 Difference]: Finished difference Result 20408 states and 30668 transitions. [2022-01-10 01:44:22,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:44:22,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 01:44:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:22,702 INFO L225 Difference]: With dead ends: 20408 [2022-01-10 01:44:22,702 INFO L226 Difference]: Without dead ends: 10819 [2022-01-10 01:44:22,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:44:22,715 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 840 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:22,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 350 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:44:22,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2022-01-10 01:44:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 10819. [2022-01-10 01:44:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.4694952856350527) internal successors, (15897), 10818 states have internal predecessors, (15897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:23,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 15897 transitions. [2022-01-10 01:44:23,950 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 15897 transitions. Word has length 122 [2022-01-10 01:44:23,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:23,950 INFO L470 AbstractCegarLoop]: Abstraction has 10819 states and 15897 transitions. [2022-01-10 01:44:23,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 15897 transitions. [2022-01-10 01:44:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 01:44:23,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:23,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:23,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:44:23,954 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:23,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1090994532, now seen corresponding path program 1 times [2022-01-10 01:44:23,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:23,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915321386] [2022-01-10 01:44:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:23,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:24,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915321386] [2022-01-10 01:44:24,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915321386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:24,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:24,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:44:24,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460183597] [2022-01-10 01:44:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:24,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:44:24,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:44:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:44:24,020 INFO L87 Difference]: Start difference. First operand 10819 states and 15897 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:25,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:25,459 INFO L93 Difference]: Finished difference Result 20628 states and 30690 transitions. [2022-01-10 01:44:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:44:25,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 01:44:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:25,478 INFO L225 Difference]: With dead ends: 20628 [2022-01-10 01:44:25,479 INFO L226 Difference]: Without dead ends: 10819 [2022-01-10 01:44:25,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:44:25,494 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 838 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:25,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 348 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:44:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2022-01-10 01:44:26,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 10819. [2022-01-10 01:44:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10819 states, 10818 states have (on average 1.457478276945831) internal successors, (15767), 10818 states have internal predecessors, (15767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10819 states to 10819 states and 15767 transitions. [2022-01-10 01:44:26,794 INFO L78 Accepts]: Start accepts. Automaton has 10819 states and 15767 transitions. Word has length 122 [2022-01-10 01:44:26,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:26,794 INFO L470 AbstractCegarLoop]: Abstraction has 10819 states and 15767 transitions. [2022-01-10 01:44:26,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 10819 states and 15767 transitions. [2022-01-10 01:44:26,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 01:44:26,797 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:26,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:26,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:44:26,797 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:26,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1423224191, now seen corresponding path program 1 times [2022-01-10 01:44:26,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:26,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066912466] [2022-01-10 01:44:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:26,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:26,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:26,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066912466] [2022-01-10 01:44:26,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066912466] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:26,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:26,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:44:26,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264548393] [2022-01-10 01:44:26,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:26,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:44:26,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:26,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:44:26,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:44:26,952 INFO L87 Difference]: Start difference. First operand 10819 states and 15767 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:29,477 INFO L93 Difference]: Finished difference Result 29158 states and 43675 transitions. [2022-01-10 01:44:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:44:29,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 01:44:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:29,503 INFO L225 Difference]: With dead ends: 29158 [2022-01-10 01:44:29,503 INFO L226 Difference]: Without dead ends: 20026 [2022-01-10 01:44:29,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:44:29,514 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 743 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:29,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 859 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:44:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20026 states. [2022-01-10 01:44:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20026 to 20024. [2022-01-10 01:44:32,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20024 states, 20023 states have (on average 1.4824451880337612) internal successors, (29683), 20023 states have internal predecessors, (29683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20024 states to 20024 states and 29683 transitions. [2022-01-10 01:44:32,076 INFO L78 Accepts]: Start accepts. Automaton has 20024 states and 29683 transitions. Word has length 122 [2022-01-10 01:44:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:32,076 INFO L470 AbstractCegarLoop]: Abstraction has 20024 states and 29683 transitions. [2022-01-10 01:44:32,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 20024 states and 29683 transitions. [2022-01-10 01:44:32,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 01:44:32,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:32,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:32,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 01:44:32,080 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:32,080 INFO L85 PathProgramCache]: Analyzing trace with hash 249575419, now seen corresponding path program 1 times [2022-01-10 01:44:32,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:32,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582740388] [2022-01-10 01:44:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:32,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:32,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:32,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582740388] [2022-01-10 01:44:32,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582740388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:32,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:32,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:44:32,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41665708] [2022-01-10 01:44:32,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:32,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:44:32,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:32,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:44:32,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:44:32,192 INFO L87 Difference]: Start difference. First operand 20024 states and 29683 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:37,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:44:37,323 INFO L93 Difference]: Finished difference Result 54720 states and 82953 transitions. [2022-01-10 01:44:37,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:44:37,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 01:44:37,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:44:37,382 INFO L225 Difference]: With dead ends: 54720 [2022-01-10 01:44:37,383 INFO L226 Difference]: Without dead ends: 37372 [2022-01-10 01:44:37,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:44:37,408 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 350 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:44:37,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 1103 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:44:37,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37372 states. [2022-01-10 01:44:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37372 to 37370. [2022-01-10 01:44:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37370 states, 37369 states have (on average 1.4834488479755947) internal successors, (55435), 37369 states have internal predecessors, (55435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37370 states to 37370 states and 55435 transitions. [2022-01-10 01:44:43,157 INFO L78 Accepts]: Start accepts. Automaton has 37370 states and 55435 transitions. Word has length 122 [2022-01-10 01:44:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:44:43,157 INFO L470 AbstractCegarLoop]: Abstraction has 37370 states and 55435 transitions. [2022-01-10 01:44:43,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:44:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 37370 states and 55435 transitions. [2022-01-10 01:44:43,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 01:44:43,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:44:43,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:44:43,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 01:44:43,162 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:44:43,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:44:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1986267249, now seen corresponding path program 1 times [2022-01-10 01:44:43,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:44:43,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443849278] [2022-01-10 01:44:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:44:43,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:44:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:44:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:44:44,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:44:44,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443849278] [2022-01-10 01:44:44,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443849278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:44:44,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:44:44,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-10 01:44:44,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058713652] [2022-01-10 01:44:44,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:44:44,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 01:44:44,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:44:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 01:44:44,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:44:44,028 INFO L87 Difference]: Start difference. First operand 37370 states and 55435 transitions. Second operand has 22 states, 22 states have (on average 5.545454545454546) internal successors, (122), 22 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)