/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_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:40:50,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:40:50,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:40:50,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:40:50,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:40:50,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:40:50,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:40:50,983 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 01:40:51,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:40:51,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:40:51,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:40:51,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:40:51,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:40:51,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:40:51,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:40:51,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:40:51,016 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:40:51,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:40:51,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:40:51,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:40:51,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:40:51,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:40:51,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:40:51,018 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:40:51,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:40:51,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:40:51,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:40:51,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:40:51,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:40:51,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:40:51,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:40:51,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:40:51,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:40:51,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:40:51,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:40:51,020 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:40:51,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:40:51,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:40:51,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:40:51,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:40:51,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:40:51,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:40:51,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:40:51,296 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:40:51,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-01-10 01:40:51,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b41a8ae9/acec298335474dbf96cf4a1295b69224/FLAGf6d0f697c [2022-01-10 01:40:51,757 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:40:51,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-01-10 01:40:51,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b41a8ae9/acec298335474dbf96cf4a1295b69224/FLAGf6d0f697c [2022-01-10 01:40:52,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b41a8ae9/acec298335474dbf96cf4a1295b69224 [2022-01-10 01:40:52,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:40:52,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:40:52,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:40:52,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:40:52,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:40:52,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b42b04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52, skipping insertion in model container [2022-01-10 01:40:52,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:40:52,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:40:52,487 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_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6694,6707] [2022-01-10 01:40:52,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:40:52,528 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:40:52,586 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_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6694,6707] [2022-01-10 01:40:52,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:40:52,631 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:40:52,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52 WrapperNode [2022-01-10 01:40:52,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:40:52,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:40:52,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:40:52,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:40:52,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,682 INFO L137 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 495 [2022-01-10 01:40:52,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:40:52,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:40:52,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:40:52,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:40:52,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:40:52,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:40:52,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:40:52,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:40:52,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (1/1) ... [2022-01-10 01:40:52,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:40:52,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:40:52,740 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 01:40:52,762 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 01:40:52,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:40:52,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:40:52,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:40:52,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:40:52,895 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:40:52,896 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:40:53,399 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:40:53,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:40:53,405 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:40:53,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:40:53 BoogieIcfgContainer [2022-01-10 01:40:53,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:40:53,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:40:53,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:40:53,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:40:53,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:40:52" (1/3) ... [2022-01-10 01:40:53,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92eab41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:40:53, skipping insertion in model container [2022-01-10 01:40:53,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:40:52" (2/3) ... [2022-01-10 01:40:53,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92eab41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:40:53, skipping insertion in model container [2022-01-10 01:40:53,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:40:53" (3/3) ... [2022-01-10 01:40:53,417 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2022-01-10 01:40:53,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:40:53,422 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:40:53,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:40:53,460 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 01:40:53,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:40:53,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 115 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:53,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:40:53,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:53,487 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] [2022-01-10 01:40:53,488 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash -866113193, now seen corresponding path program 1 times [2022-01-10 01:40:53,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:53,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10662439] [2022-01-10 01:40:53,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:53,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:53,786 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 01:40:53,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:53,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10662439] [2022-01-10 01:40:53,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10662439] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:53,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:53,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:53,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357341605] [2022-01-10 01:40:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:53,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:53,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:53,827 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 115 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 01:40:53,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:53,902 INFO L93 Difference]: Finished difference Result 254 states and 416 transitions. [2022-01-10 01:40:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:53,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 01:40:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:53,917 INFO L225 Difference]: With dead ends: 254 [2022-01-10 01:40:53,917 INFO L226 Difference]: Without dead ends: 175 [2022-01-10 01:40:53,919 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 01:40:53,922 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 140 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:53,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 407 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-01-10 01:40:53,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2022-01-10 01:40:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.4534883720930232) internal successors, (250), 172 states have internal predecessors, (250), 0 states have call successors, (0), 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 01:40:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 250 transitions. [2022-01-10 01:40:53,963 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 250 transitions. Word has length 72 [2022-01-10 01:40:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:53,964 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 250 transitions. [2022-01-10 01:40:53,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 01:40:53,964 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 250 transitions. [2022-01-10 01:40:53,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 01:40:53,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:53,966 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] [2022-01-10 01:40:53,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:40:53,967 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:53,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash -566031041, now seen corresponding path program 1 times [2022-01-10 01:40:53,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:53,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697125284] [2022-01-10 01:40:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:53,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:54,091 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 01:40:54,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:54,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697125284] [2022-01-10 01:40:54,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697125284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:54,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:54,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:54,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899161646] [2022-01-10 01:40:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:54,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:54,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:54,096 INFO L87 Difference]: Start difference. First operand 173 states and 250 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:40:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:54,137 INFO L93 Difference]: Finished difference Result 417 states and 638 transitions. [2022-01-10 01:40:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 01:40:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:54,140 INFO L225 Difference]: With dead ends: 417 [2022-01-10 01:40:54,140 INFO L226 Difference]: Without dead ends: 287 [2022-01-10 01:40:54,141 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 01:40:54,142 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 96 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:54,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 350 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:54,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-01-10 01:40:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-01-10 01:40:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.5070422535211268) internal successors, (428), 284 states have internal predecessors, (428), 0 states have call successors, (0), 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 01:40:54,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 428 transitions. [2022-01-10 01:40:54,172 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 428 transitions. Word has length 73 [2022-01-10 01:40:54,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:54,172 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 428 transitions. [2022-01-10 01:40:54,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 01:40:54,172 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 428 transitions. [2022-01-10 01:40:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 01:40:54,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:54,174 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] [2022-01-10 01:40:54,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:40:54,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash -739923133, now seen corresponding path program 1 times [2022-01-10 01:40:54,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:54,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848483364] [2022-01-10 01:40:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:54,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:54,273 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 01:40:54,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:54,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848483364] [2022-01-10 01:40:54,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848483364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:54,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:54,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:54,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324634433] [2022-01-10 01:40:54,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:54,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:54,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:54,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:54,276 INFO L87 Difference]: Start difference. First operand 285 states and 428 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:54,325 INFO L93 Difference]: Finished difference Result 737 states and 1146 transitions. [2022-01-10 01:40:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:54,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 01:40:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:54,329 INFO L225 Difference]: With dead ends: 737 [2022-01-10 01:40:54,329 INFO L226 Difference]: Without dead ends: 495 [2022-01-10 01:40:54,330 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 01:40:54,331 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 91 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:54,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 346 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:54,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-01-10 01:40:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 493. [2022-01-10 01:40:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.5365853658536586) internal successors, (756), 492 states have internal predecessors, (756), 0 states have call successors, (0), 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 01:40:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 756 transitions. [2022-01-10 01:40:54,402 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 756 transitions. Word has length 74 [2022-01-10 01:40:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:54,403 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 756 transitions. [2022-01-10 01:40:54,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 756 transitions. [2022-01-10 01:40:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 01:40:54,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:54,411 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] [2022-01-10 01:40:54,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:40:54,412 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:54,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash 330068461, now seen corresponding path program 1 times [2022-01-10 01:40:54,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:54,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900767222] [2022-01-10 01:40:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:54,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:54,526 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 01:40:54,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:54,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900767222] [2022-01-10 01:40:54,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900767222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:54,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:54,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:54,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577712856] [2022-01-10 01:40:54,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:54,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:54,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:54,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:54,529 INFO L87 Difference]: Start difference. First operand 493 states and 756 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 01:40:54,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:54,590 INFO L93 Difference]: Finished difference Result 1329 states and 2078 transitions. [2022-01-10 01:40:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:54,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 01:40:54,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:54,595 INFO L225 Difference]: With dead ends: 1329 [2022-01-10 01:40:54,595 INFO L226 Difference]: Without dead ends: 879 [2022-01-10 01:40:54,616 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 01:40:54,618 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 86 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:54,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 342 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-01-10 01:40:54,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 877. [2022-01-10 01:40:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.547945205479452) internal successors, (1356), 876 states have internal predecessors, (1356), 0 states have call successors, (0), 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 01:40:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1356 transitions. [2022-01-10 01:40:54,688 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1356 transitions. Word has length 75 [2022-01-10 01:40:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:54,688 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1356 transitions. [2022-01-10 01:40:54,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 01:40:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1356 transitions. [2022-01-10 01:40:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 01:40:54,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:54,691 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] [2022-01-10 01:40:54,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:40:54,691 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:54,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:54,693 INFO L85 PathProgramCache]: Analyzing trace with hash -298149753, now seen corresponding path program 1 times [2022-01-10 01:40:54,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:54,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856235181] [2022-01-10 01:40:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:54,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:54,815 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 01:40:54,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:54,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856235181] [2022-01-10 01:40:54,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856235181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:54,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:54,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:54,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276070503] [2022-01-10 01:40:54,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:54,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:54,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:54,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:54,818 INFO L87 Difference]: Start difference. First operand 877 states and 1356 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:54,929 INFO L93 Difference]: Finished difference Result 2417 states and 3774 transitions. [2022-01-10 01:40:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:54,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 01:40:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:54,939 INFO L225 Difference]: With dead ends: 2417 [2022-01-10 01:40:54,939 INFO L226 Difference]: Without dead ends: 1583 [2022-01-10 01:40:54,940 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 01:40:54,942 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 81 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:54,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 338 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:54,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-01-10 01:40:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1581. [2022-01-10 01:40:55,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.5468354430379747) internal successors, (2444), 1580 states have internal predecessors, (2444), 0 states have call successors, (0), 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 01:40:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2444 transitions. [2022-01-10 01:40:55,046 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2444 transitions. Word has length 76 [2022-01-10 01:40:55,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:55,047 INFO L470 AbstractCegarLoop]: Abstraction has 1581 states and 2444 transitions. [2022-01-10 01:40:55,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:55,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2444 transitions. [2022-01-10 01:40:55,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 01:40:55,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:55,053 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] [2022-01-10 01:40:55,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:40:55,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2012894605, now seen corresponding path program 1 times [2022-01-10 01:40:55,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:55,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930354329] [2022-01-10 01:40:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:55,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:55,143 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 01:40:55,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:55,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930354329] [2022-01-10 01:40:55,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930354329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:55,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:55,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:55,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568051592] [2022-01-10 01:40:55,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:55,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:55,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:55,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:55,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:55,147 INFO L87 Difference]: Start difference. First operand 1581 states and 2444 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 01:40:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:55,344 INFO L93 Difference]: Finished difference Result 4401 states and 6830 transitions. [2022-01-10 01:40:55,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:55,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 01:40:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:55,355 INFO L225 Difference]: With dead ends: 4401 [2022-01-10 01:40:55,356 INFO L226 Difference]: Without dead ends: 2863 [2022-01-10 01:40:55,358 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 01:40:55,362 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 76 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:55,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 334 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-01-10 01:40:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2022-01-10 01:40:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2860 states have (on average 1.5370629370629372) internal successors, (4396), 2860 states have internal predecessors, (4396), 0 states have call successors, (0), 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 01:40:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4396 transitions. [2022-01-10 01:40:55,526 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4396 transitions. Word has length 77 [2022-01-10 01:40:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:55,531 INFO L470 AbstractCegarLoop]: Abstraction has 2861 states and 4396 transitions. [2022-01-10 01:40:55,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 01:40:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4396 transitions. [2022-01-10 01:40:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:40:55,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:55,532 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] [2022-01-10 01:40:55,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:40:55,533 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:55,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1910583587, now seen corresponding path program 1 times [2022-01-10 01:40:55,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:55,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302681532] [2022-01-10 01:40:55,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:55,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:55,664 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 01:40:55,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:55,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302681532] [2022-01-10 01:40:55,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302681532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:55,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:55,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:40:55,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919566532] [2022-01-10 01:40:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:55,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:40:55,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:40:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:40:55,666 INFO L87 Difference]: Start difference. First operand 2861 states and 4396 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:57,934 INFO L93 Difference]: Finished difference Result 36677 states and 56632 transitions. [2022-01-10 01:40:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 01:40:57,936 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 01:40:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:58,058 INFO L225 Difference]: With dead ends: 36677 [2022-01-10 01:40:58,058 INFO L226 Difference]: Without dead ends: 33859 [2022-01-10 01:40:58,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:40:58,075 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 1642 mSDsluCounter, 3118 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:58,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 3268 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:40:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33859 states. [2022-01-10 01:40:59,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33859 to 5677. [2022-01-10 01:40:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.518675123326286) internal successors, (8620), 5676 states have internal predecessors, (8620), 0 states have call successors, (0), 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 01:40:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 8620 transitions. [2022-01-10 01:40:59,045 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 8620 transitions. Word has length 78 [2022-01-10 01:40:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:40:59,046 INFO L470 AbstractCegarLoop]: Abstraction has 5677 states and 8620 transitions. [2022-01-10 01:40:59,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 8620 transitions. [2022-01-10 01:40:59,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 01:40:59,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:40:59,047 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] [2022-01-10 01:40:59,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:40:59,048 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:40:59,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:40:59,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1197972063, now seen corresponding path program 1 times [2022-01-10 01:40:59,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:40:59,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950321938] [2022-01-10 01:40:59,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:40:59,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:40:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:40:59,096 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 01:40:59,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:40:59,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950321938] [2022-01-10 01:40:59,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950321938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:40:59,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:40:59,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:40:59,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400250105] [2022-01-10 01:40:59,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:40:59,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:40:59,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:40:59,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:40:59,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:40:59,098 INFO L87 Difference]: Start difference. First operand 5677 states and 8620 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:40:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:40:59,877 INFO L93 Difference]: Finished difference Result 14035 states and 21328 transitions. [2022-01-10 01:40:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:40:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 01:40:59,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:40:59,903 INFO L225 Difference]: With dead ends: 14035 [2022-01-10 01:40:59,903 INFO L226 Difference]: Without dead ends: 8401 [2022-01-10 01:40:59,911 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 01:40:59,912 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:40:59,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 298 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:40:59,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2022-01-10 01:41:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 8399. [2022-01-10 01:41:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.506787330316742) internal successors, (12654), 8398 states have internal predecessors, (12654), 0 states have call successors, (0), 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 01:41:00,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12654 transitions. [2022-01-10 01:41:00,632 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12654 transitions. Word has length 80 [2022-01-10 01:41:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:00,633 INFO L470 AbstractCegarLoop]: Abstraction has 8399 states and 12654 transitions. [2022-01-10 01:41:00,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12654 transitions. [2022-01-10 01:41:00,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 01:41:00,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:00,634 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] [2022-01-10 01:41:00,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:41:00,634 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:00,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:00,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1218974718, now seen corresponding path program 1 times [2022-01-10 01:41:00,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:00,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720475329] [2022-01-10 01:41:00,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:00,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:00,898 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 01:41:00,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:00,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720475329] [2022-01-10 01:41:00,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720475329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:00,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:00,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:41:00,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300177900] [2022-01-10 01:41:00,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:00,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:41:00,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:41:00,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:41:00,902 INFO L87 Difference]: Start difference. First operand 8399 states and 12654 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:01,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:01,971 INFO L93 Difference]: Finished difference Result 16755 states and 25264 transitions. [2022-01-10 01:41:01,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:41:01,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 01:41:01,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:01,996 INFO L225 Difference]: With dead ends: 16755 [2022-01-10 01:41:01,996 INFO L226 Difference]: Without dead ends: 8401 [2022-01-10 01:41:02,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:41:02,012 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 369 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:02,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 797 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:41:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8401 states. [2022-01-10 01:41:02,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8401 to 8399. [2022-01-10 01:41:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.4953560371517027) internal successors, (12558), 8398 states have internal predecessors, (12558), 0 states have call successors, (0), 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 01:41:02,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12558 transitions. [2022-01-10 01:41:02,857 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12558 transitions. Word has length 80 [2022-01-10 01:41:02,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:02,857 INFO L470 AbstractCegarLoop]: Abstraction has 8399 states and 12558 transitions. [2022-01-10 01:41:02,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:02,858 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12558 transitions. [2022-01-10 01:41:02,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 01:41:02,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:02,858 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] [2022-01-10 01:41:02,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:41:02,859 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:02,859 INFO L85 PathProgramCache]: Analyzing trace with hash -868398721, now seen corresponding path program 1 times [2022-01-10 01:41:02,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:02,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890835784] [2022-01-10 01:41:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:02,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:02,918 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 01:41:02,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:02,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890835784] [2022-01-10 01:41:02,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890835784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:02,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:02,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:41:02,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847540152] [2022-01-10 01:41:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:02,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:41:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:41:02,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:41:02,920 INFO L87 Difference]: Start difference. First operand 8399 states and 12558 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:03,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:03,685 INFO L93 Difference]: Finished difference Result 16753 states and 25071 transitions. [2022-01-10 01:41:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:41:03,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 01:41:03,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:03,705 INFO L225 Difference]: With dead ends: 16753 [2022-01-10 01:41:03,705 INFO L226 Difference]: Without dead ends: 8399 [2022-01-10 01:41:03,714 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 01:41:03,715 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 403 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:03,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 98 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:41:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2022-01-10 01:41:04,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8399. [2022-01-10 01:41:04,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.4801143129316503) internal successors, (12430), 8398 states have internal predecessors, (12430), 0 states have call successors, (0), 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 01:41:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12430 transitions. [2022-01-10 01:41:04,469 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12430 transitions. Word has length 81 [2022-01-10 01:41:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:04,469 INFO L470 AbstractCegarLoop]: Abstraction has 8399 states and 12430 transitions. [2022-01-10 01:41:04,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12430 transitions. [2022-01-10 01:41:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 01:41:04,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:04,470 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] [2022-01-10 01:41:04,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:41:04,470 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1685151460, now seen corresponding path program 1 times [2022-01-10 01:41:04,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:04,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248693093] [2022-01-10 01:41:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:04,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:04,532 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 01:41:04,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:04,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248693093] [2022-01-10 01:41:04,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248693093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:04,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:04,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:41:04,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189360220] [2022-01-10 01:41:04,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:04,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:41:04,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:04,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:41:04,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:41:04,534 INFO L87 Difference]: Start difference. First operand 8399 states and 12430 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:05,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:05,326 INFO L93 Difference]: Finished difference Result 16753 states and 24815 transitions. [2022-01-10 01:41:05,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:41:05,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 01:41:05,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:05,347 INFO L225 Difference]: With dead ends: 16753 [2022-01-10 01:41:05,347 INFO L226 Difference]: Without dead ends: 8399 [2022-01-10 01:41:05,356 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 01:41:05,357 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 348 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:05,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 130 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:41:05,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2022-01-10 01:41:06,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8399. [2022-01-10 01:41:06,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.4686830197666112) internal successors, (12334), 8398 states have internal predecessors, (12334), 0 states have call successors, (0), 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 01:41:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12334 transitions. [2022-01-10 01:41:06,334 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12334 transitions. Word has length 81 [2022-01-10 01:41:06,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:06,334 INFO L470 AbstractCegarLoop]: Abstraction has 8399 states and 12334 transitions. [2022-01-10 01:41:06,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12334 transitions. [2022-01-10 01:41:06,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 01:41:06,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:06,335 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] [2022-01-10 01:41:06,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:41:06,336 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1744283447, now seen corresponding path program 1 times [2022-01-10 01:41:06,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033129058] [2022-01-10 01:41:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:06,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:06,390 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 01:41:06,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:06,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033129058] [2022-01-10 01:41:06,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033129058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:06,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:06,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:41:06,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105501409] [2022-01-10 01:41:06,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:06,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:41:06,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:06,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:41:06,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:41:06,392 INFO L87 Difference]: Start difference. First operand 8399 states and 12334 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:07,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:07,197 INFO L93 Difference]: Finished difference Result 16753 states and 24623 transitions. [2022-01-10 01:41:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:41:07,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 01:41:07,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:07,210 INFO L225 Difference]: With dead ends: 16753 [2022-01-10 01:41:07,211 INFO L226 Difference]: Without dead ends: 8399 [2022-01-10 01:41:07,221 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 01:41:07,222 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 371 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:07,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 114 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:41:07,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8399 states. [2022-01-10 01:41:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8399 to 8399. [2022-01-10 01:41:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 1.4572517266015719) internal successors, (12238), 8398 states have internal predecessors, (12238), 0 states have call successors, (0), 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 01:41:08,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 12238 transitions. [2022-01-10 01:41:08,106 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 12238 transitions. Word has length 81 [2022-01-10 01:41:08,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:08,106 INFO L470 AbstractCegarLoop]: Abstraction has 8399 states and 12238 transitions. [2022-01-10 01:41:08,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 12238 transitions. [2022-01-10 01:41:08,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 01:41:08,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:08,107 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] [2022-01-10 01:41:08,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:41:08,108 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:08,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:08,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1787820142, now seen corresponding path program 1 times [2022-01-10 01:41:08,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:08,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039699787] [2022-01-10 01:41:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:08,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:08,199 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 01:41:08,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:08,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039699787] [2022-01-10 01:41:08,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039699787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:08,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:08,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:41:08,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261025335] [2022-01-10 01:41:08,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:08,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:41:08,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:41:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:41:08,201 INFO L87 Difference]: Start difference. First operand 8399 states and 12238 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:09,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:09,881 INFO L93 Difference]: Finished difference Result 15165 states and 22034 transitions. [2022-01-10 01:41:09,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:41:09,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 01:41:09,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:09,900 INFO L225 Difference]: With dead ends: 15165 [2022-01-10 01:41:09,901 INFO L226 Difference]: Without dead ends: 15163 [2022-01-10 01:41:09,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:41:09,906 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 200 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:09,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 685 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:41:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15163 states. [2022-01-10 01:41:10,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15163 to 8655. [2022-01-10 01:41:10,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8655 states, 8654 states have (on average 1.440027732840305) internal successors, (12462), 8654 states have internal predecessors, (12462), 0 states have call successors, (0), 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 01:41:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8655 states to 8655 states and 12462 transitions. [2022-01-10 01:41:10,845 INFO L78 Accepts]: Start accepts. Automaton has 8655 states and 12462 transitions. Word has length 81 [2022-01-10 01:41:10,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:10,846 INFO L470 AbstractCegarLoop]: Abstraction has 8655 states and 12462 transitions. [2022-01-10 01:41:10,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:10,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8655 states and 12462 transitions. [2022-01-10 01:41:10,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 01:41:10,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:10,850 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:41:10,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:41:10,850 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:10,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash 333029362, now seen corresponding path program 1 times [2022-01-10 01:41:10,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:10,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580527603] [2022-01-10 01:41:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:10,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:10,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:41:10,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:10,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580527603] [2022-01-10 01:41:10,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580527603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:10,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:10,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:41:10,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859878764] [2022-01-10 01:41:10,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:10,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:41:10,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:10,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:41:10,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:41:10,937 INFO L87 Difference]: Start difference. First operand 8655 states and 12462 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 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 01:41:16,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:16,908 INFO L93 Difference]: Finished difference Result 59197 states and 85365 transitions. [2022-01-10 01:41:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:41:16,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 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 111 [2022-01-10 01:41:16,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:16,988 INFO L225 Difference]: With dead ends: 59197 [2022-01-10 01:41:16,988 INFO L226 Difference]: Without dead ends: 53307 [2022-01-10 01:41:17,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:41:17,008 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1349 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:17,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 1612 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:41:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53307 states. [2022-01-10 01:41:19,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53307 to 15919. [2022-01-10 01:41:19,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15919 states, 15918 states have (on average 1.436235708003518) internal successors, (22862), 15918 states have internal predecessors, (22862), 0 states have call successors, (0), 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 01:41:19,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15919 states to 15919 states and 22862 transitions. [2022-01-10 01:41:19,430 INFO L78 Accepts]: Start accepts. Automaton has 15919 states and 22862 transitions. Word has length 111 [2022-01-10 01:41:19,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:19,430 INFO L470 AbstractCegarLoop]: Abstraction has 15919 states and 22862 transitions. [2022-01-10 01:41:19,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 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 01:41:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 15919 states and 22862 transitions. [2022-01-10 01:41:19,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 01:41:19,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:19,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:41:19,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:41:19,436 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash -317771784, now seen corresponding path program 1 times [2022-01-10 01:41:19,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:19,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138437181] [2022-01-10 01:41:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:19,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:19,529 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 01:41:19,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:19,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138437181] [2022-01-10 01:41:19,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138437181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:19,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:19,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:41:19,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522375080] [2022-01-10 01:41:19,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:19,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:41:19,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:19,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:41:19,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:41:19,530 INFO L87 Difference]: Start difference. First operand 15919 states and 22862 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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 01:41:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:27,929 INFO L93 Difference]: Finished difference Result 67805 states and 97717 transitions. [2022-01-10 01:41:27,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:41:27,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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 111 [2022-01-10 01:41:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:28,012 INFO L225 Difference]: With dead ends: 67805 [2022-01-10 01:41:28,012 INFO L226 Difference]: Without dead ends: 59195 [2022-01-10 01:41:28,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:41:28,033 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1348 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:28,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 1584 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:41:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59195 states. [2022-01-10 01:41:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59195 to 27471. [2022-01-10 01:41:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27471 states, 27470 states have (on average 1.433345467783036) internal successors, (39374), 27470 states have internal predecessors, (39374), 0 states have call successors, (0), 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 01:41:32,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27471 states to 27471 states and 39374 transitions. [2022-01-10 01:41:32,685 INFO L78 Accepts]: Start accepts. Automaton has 27471 states and 39374 transitions. Word has length 111 [2022-01-10 01:41:32,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:32,685 INFO L470 AbstractCegarLoop]: Abstraction has 27471 states and 39374 transitions. [2022-01-10 01:41:32,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 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 01:41:32,686 INFO L276 IsEmpty]: Start isEmpty. Operand 27471 states and 39374 transitions. [2022-01-10 01:41:32,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 01:41:32,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:32,692 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:41:32,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:41:32,692 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:32,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2001758078, now seen corresponding path program 1 times [2022-01-10 01:41:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:32,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800603480] [2022-01-10 01:41:32,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:32,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 01:41:32,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:32,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800603480] [2022-01-10 01:41:32,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800603480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:32,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:32,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:41:32,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518359442] [2022-01-10 01:41:32,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:32,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:41:32,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:41:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:41:32,914 INFO L87 Difference]: Start difference. First operand 27471 states and 39374 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:41:43,985 INFO L93 Difference]: Finished difference Result 76413 states and 110037 transitions. [2022-01-10 01:41:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 01:41:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-01-10 01:41:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:41:44,079 INFO L225 Difference]: With dead ends: 76413 [2022-01-10 01:41:44,079 INFO L226 Difference]: Without dead ends: 67803 [2022-01-10 01:41:44,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:41:44,104 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 1434 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:41:44,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 1490 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:41:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67803 states. [2022-01-10 01:41:50,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67803 to 36079. [2022-01-10 01:41:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36079 states, 36078 states have (on average 1.4328399578690614) internal successors, (51694), 36078 states have internal predecessors, (51694), 0 states have call successors, (0), 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 01:41:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36079 states to 36079 states and 51694 transitions. [2022-01-10 01:41:50,504 INFO L78 Accepts]: Start accepts. Automaton has 36079 states and 51694 transitions. Word has length 111 [2022-01-10 01:41:50,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:41:50,505 INFO L470 AbstractCegarLoop]: Abstraction has 36079 states and 51694 transitions. [2022-01-10 01:41:50,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:41:50,505 INFO L276 IsEmpty]: Start isEmpty. Operand 36079 states and 51694 transitions. [2022-01-10 01:41:50,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 01:41:50,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:41:50,512 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:41:50,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:41:50,512 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:41:50,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:41:50,513 INFO L85 PathProgramCache]: Analyzing trace with hash 277216016, now seen corresponding path program 1 times [2022-01-10 01:41:50,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:41:50,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867040549] [2022-01-10 01:41:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:41:50,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:41:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:41:50,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 01:41:50,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:41:50,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867040549] [2022-01-10 01:41:50,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867040549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:41:50,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:41:50,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:41:50,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681772979] [2022-01-10 01:41:50,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:41:50,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 01:41:50,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:41:50,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 01:41:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:41:50,598 INFO L87 Difference]: Start difference. First operand 36079 states and 51694 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 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)