/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/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:09:56,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:09:56,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:09:56,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:09:56,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:09:56,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:09:56,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:09:56,389 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 01:09:56,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:09:56,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:09:56,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:09:56,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:09:56,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:09:56,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:09:56,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:09:56,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:09:56,414 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:09:56,414 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:09:56,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:09:56,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:09:56,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:09:56,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:09:56,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:09:56,415 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:09:56,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:09:56,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:09:56,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:09:56,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:09:56,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:09:56,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:09:56,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:09:56,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:09:56,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:09:56,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:09:56,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:09:56,418 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:09:56,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:09:56,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:09:56,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:09:56,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:09:56,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:09:56,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:09:56,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:09:56,689 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:09:56,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2022-01-10 01:09:56,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa29594c9/3ef847bc03d04c1cb1f67205cfc4050b/FLAG25bc65547 [2022-01-10 01:09:57,169 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:09:57,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2022-01-10 01:09:57,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa29594c9/3ef847bc03d04c1cb1f67205cfc4050b/FLAG25bc65547 [2022-01-10 01:09:57,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa29594c9/3ef847bc03d04c1cb1f67205cfc4050b [2022-01-10 01:09:57,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:09:57,541 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:09:57,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:09:57,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:09:57,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:09:57,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d141b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57, skipping insertion in model container [2022-01-10 01:09:57,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:09:57,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:09:57,804 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/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c[11552,11565] [2022-01-10 01:09:57,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:09:57,814 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:09:57,865 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/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c[11552,11565] [2022-01-10 01:09:57,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:09:57,883 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:09:57,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57 WrapperNode [2022-01-10 01:09:57,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:09:57,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:09:57,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:09:57,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:09:57,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,940 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 431 [2022-01-10 01:09:57,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:09:57,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:09:57,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:09:57,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:09:57,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:57,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:09:57,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:09:57,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:09:57,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:09:57,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (1/1) ... [2022-01-10 01:09:58,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:09:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:09:58,037 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 01:09:58,050 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 01:09:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:09:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:09:58,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:09:58,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:09:58,193 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:09:58,194 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:09:58,598 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:09:58,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:09:58,605 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 01:09:58,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:58 BoogieIcfgContainer [2022-01-10 01:09:58,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:09:58,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:09:58,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:09:58,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:09:58,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:09:57" (1/3) ... [2022-01-10 01:09:58,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a0506d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:09:58, skipping insertion in model container [2022-01-10 01:09:58,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:09:57" (2/3) ... [2022-01-10 01:09:58,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a0506d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:09:58, skipping insertion in model container [2022-01-10 01:09:58,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:09:58" (3/3) ... [2022-01-10 01:09:58,614 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2022-01-10 01:09:58,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:09:58,619 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:09:58,657 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:09:58,663 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 01:09:58,663 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:09:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7364341085271318) internal successors, (224), 130 states have internal predecessors, (224), 0 states have call successors, (0), 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 01:09:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 01:09:58,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:58,686 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] [2022-01-10 01:09:58,687 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:58,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:58,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1238377303, now seen corresponding path program 1 times [2022-01-10 01:09:58,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:58,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089024768] [2022-01-10 01:09:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:58,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:58,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:58,955 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 01:09:58,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:58,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089024768] [2022-01-10 01:09:58,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089024768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:58,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:58,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 01:09:58,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221883116] [2022-01-10 01:09:58,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:58,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 01:09:58,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 01:09:58,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:09:58,996 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7364341085271318) internal successors, (224), 130 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:09:59,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:59,038 INFO L93 Difference]: Finished difference Result 208 states and 355 transitions. [2022-01-10 01:09:59,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 01:09:59,041 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 01:09:59,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:59,055 INFO L225 Difference]: With dead ends: 208 [2022-01-10 01:09:59,055 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 01:09:59,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 01:09:59,062 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:59,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 01:09:59,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-01-10 01:09:59,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.7222222222222223) internal successors, (217), 126 states have internal predecessors, (217), 0 states have call successors, (0), 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 01:09:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 217 transitions. [2022-01-10 01:09:59,114 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 217 transitions. Word has length 37 [2022-01-10 01:09:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:59,115 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 217 transitions. [2022-01-10 01:09:59,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:09:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 217 transitions. [2022-01-10 01:09:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 01:09:59,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:59,119 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] [2022-01-10 01:09:59,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:09:59,120 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:59,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash 420728853, now seen corresponding path program 1 times [2022-01-10 01:09:59,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:59,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101042654] [2022-01-10 01:09:59,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:59,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,267 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 01:09:59,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:59,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101042654] [2022-01-10 01:09:59,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101042654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:59,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:59,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:09:59,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810405360] [2022-01-10 01:09:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:59,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:59,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:59,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:59,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:59,272 INFO L87 Difference]: Start difference. First operand 127 states and 217 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:09:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:59,360 INFO L93 Difference]: Finished difference Result 207 states and 348 transitions. [2022-01-10 01:09:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:09:59,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 01:09:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:59,362 INFO L225 Difference]: With dead ends: 207 [2022-01-10 01:09:59,362 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 01:09:59,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:09:59,366 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:59,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 836 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 01:09:59,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-01-10 01:09:59,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5555555555555556) internal successors, (196), 126 states have internal predecessors, (196), 0 states have call successors, (0), 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 01:09:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 196 transitions. [2022-01-10 01:09:59,376 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 196 transitions. Word has length 37 [2022-01-10 01:09:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:59,376 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 196 transitions. [2022-01-10 01:09:59,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 01:09:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 196 transitions. [2022-01-10 01:09:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 01:09:59,378 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:59,378 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] [2022-01-10 01:09:59,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:09:59,378 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:59,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1846122567, now seen corresponding path program 1 times [2022-01-10 01:09:59,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:59,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822575603] [2022-01-10 01:09:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:59,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,458 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 01:09:59,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:59,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822575603] [2022-01-10 01:09:59,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822575603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:59,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:59,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:59,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642004317] [2022-01-10 01:09:59,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:59,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:59,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:59,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:59,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:59,462 INFO L87 Difference]: Start difference. First operand 127 states and 196 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:09:59,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:59,499 INFO L93 Difference]: Finished difference Result 270 states and 433 transitions. [2022-01-10 01:09:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:59,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 01:09:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:59,501 INFO L225 Difference]: With dead ends: 270 [2022-01-10 01:09:59,502 INFO L226 Difference]: Without dead ends: 194 [2022-01-10 01:09:59,502 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 01:09:59,508 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 101 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:59,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 349 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:59,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-10 01:09:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-01-10 01:09:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.568421052631579) internal successors, (298), 190 states have internal predecessors, (298), 0 states have call successors, (0), 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 01:09:59,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 298 transitions. [2022-01-10 01:09:59,525 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 298 transitions. Word has length 57 [2022-01-10 01:09:59,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:59,526 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 298 transitions. [2022-01-10 01:09:59,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 01:09:59,526 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 298 transitions. [2022-01-10 01:09:59,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 01:09:59,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:59,532 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] [2022-01-10 01:09:59,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:09:59,533 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:59,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1343531320, now seen corresponding path program 1 times [2022-01-10 01:09:59,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:59,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811426956] [2022-01-10 01:09:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:59,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,621 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 01:09:59,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:59,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811426956] [2022-01-10 01:09:59,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811426956] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:59,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:59,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:59,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059261546] [2022-01-10 01:09:59,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:59,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:59,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:59,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:59,625 INFO L87 Difference]: Start difference. First operand 191 states and 298 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:09:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:59,664 INFO L93 Difference]: Finished difference Result 457 states and 730 transitions. [2022-01-10 01:09:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:59,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 01:09:59,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:59,669 INFO L225 Difference]: With dead ends: 457 [2022-01-10 01:09:59,669 INFO L226 Difference]: Without dead ends: 317 [2022-01-10 01:09:59,671 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 01:09:59,674 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 103 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:59,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 362 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-01-10 01:09:59,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2022-01-10 01:09:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.5833333333333333) internal successors, (494), 312 states have internal predecessors, (494), 0 states have call successors, (0), 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 01:09:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 494 transitions. [2022-01-10 01:09:59,694 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 494 transitions. Word has length 59 [2022-01-10 01:09:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:59,694 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 494 transitions. [2022-01-10 01:09:59,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 01:09:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 494 transitions. [2022-01-10 01:09:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 01:09:59,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:59,696 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] [2022-01-10 01:09:59,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:09:59,697 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:59,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1628241783, now seen corresponding path program 1 times [2022-01-10 01:09:59,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:59,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109806948] [2022-01-10 01:09:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:59,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,788 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 01:09:59,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:59,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109806948] [2022-01-10 01:09:59,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109806948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:59,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:59,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:09:59,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405547594] [2022-01-10 01:09:59,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:59,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:09:59,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:59,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:09:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:09:59,790 INFO L87 Difference]: Start difference. First operand 313 states and 494 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:09:59,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:09:59,833 INFO L93 Difference]: Finished difference Result 809 states and 1292 transitions. [2022-01-10 01:09:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:09:59,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 01:09:59,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:09:59,836 INFO L225 Difference]: With dead ends: 809 [2022-01-10 01:09:59,836 INFO L226 Difference]: Without dead ends: 547 [2022-01-10 01:09:59,837 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 01:09:59,838 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 97 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:09:59,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 363 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:09:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-01-10 01:09:59,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 541. [2022-01-10 01:09:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 1.5814814814814815) internal successors, (854), 540 states have internal predecessors, (854), 0 states have call successors, (0), 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 01:09:59,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 854 transitions. [2022-01-10 01:09:59,871 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 854 transitions. Word has length 61 [2022-01-10 01:09:59,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:09:59,873 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 854 transitions. [2022-01-10 01:09:59,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 01:09:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 854 transitions. [2022-01-10 01:09:59,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 01:09:59,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:09:59,880 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] [2022-01-10 01:09:59,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:09:59,880 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:09:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:09:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1563109830, now seen corresponding path program 1 times [2022-01-10 01:09:59,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:09:59,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279340477] [2022-01-10 01:09:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:09:59,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:09:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:09:59,962 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 01:09:59,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:09:59,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279340477] [2022-01-10 01:09:59,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279340477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:09:59,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:09:59,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:09:59,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566117708] [2022-01-10 01:09:59,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:09:59,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:09:59,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:09:59,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:09:59,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:09:59,964 INFO L87 Difference]: Start difference. First operand 541 states and 854 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 01:10:00,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:00,132 INFO L93 Difference]: Finished difference Result 2333 states and 3776 transitions. [2022-01-10 01:10:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:10:00,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 01:10:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:00,139 INFO L225 Difference]: With dead ends: 2333 [2022-01-10 01:10:00,140 INFO L226 Difference]: Without dead ends: 1843 [2022-01-10 01:10:00,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:10:00,141 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 828 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:00,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 1143 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:10:00,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-01-10 01:10:00,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 969. [2022-01-10 01:10:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 968 states have (on average 1.5919421487603307) internal successors, (1541), 968 states have internal predecessors, (1541), 0 states have call successors, (0), 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 01:10:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1541 transitions. [2022-01-10 01:10:00,200 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1541 transitions. Word has length 63 [2022-01-10 01:10:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:00,200 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1541 transitions. [2022-01-10 01:10:00,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 01:10:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1541 transitions. [2022-01-10 01:10:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 01:10:00,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:00,201 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] [2022-01-10 01:10:00,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:10:00,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash -711068186, now seen corresponding path program 1 times [2022-01-10 01:10:00,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:00,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409293312] [2022-01-10 01:10:00,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:00,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:00,250 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 01:10:00,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:00,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409293312] [2022-01-10 01:10:00,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409293312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:00,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:00,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:00,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962026341] [2022-01-10 01:10:00,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:00,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:00,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:00,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:00,253 INFO L87 Difference]: Start difference. First operand 969 states and 1541 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 01:10:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:00,356 INFO L93 Difference]: Finished difference Result 2831 states and 4571 transitions. [2022-01-10 01:10:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:00,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 01:10:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:00,365 INFO L225 Difference]: With dead ends: 2831 [2022-01-10 01:10:00,365 INFO L226 Difference]: Without dead ends: 1913 [2022-01-10 01:10:00,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:00,369 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 363 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:00,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 644 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:00,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2022-01-10 01:10:00,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1432. [2022-01-10 01:10:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 1.6009783368273933) internal successors, (2291), 1431 states have internal predecessors, (2291), 0 states have call successors, (0), 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 01:10:00,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2291 transitions. [2022-01-10 01:10:00,436 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2291 transitions. Word has length 64 [2022-01-10 01:10:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:00,437 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 2291 transitions. [2022-01-10 01:10:00,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 01:10:00,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2291 transitions. [2022-01-10 01:10:00,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 01:10:00,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:00,439 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] [2022-01-10 01:10:00,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:10:00,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1972861693, now seen corresponding path program 1 times [2022-01-10 01:10:00,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:00,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37370876] [2022-01-10 01:10:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:00,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:00,489 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 01:10:00,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:00,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37370876] [2022-01-10 01:10:00,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37370876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:00,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:00,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:00,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836570743] [2022-01-10 01:10:00,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:00,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:00,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:00,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:00,491 INFO L87 Difference]: Start difference. First operand 1432 states and 2291 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 01:10:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:00,619 INFO L93 Difference]: Finished difference Result 4159 states and 6709 transitions. [2022-01-10 01:10:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:00,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 01:10:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:00,629 INFO L225 Difference]: With dead ends: 4159 [2022-01-10 01:10:00,629 INFO L226 Difference]: Without dead ends: 2778 [2022-01-10 01:10:00,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:00,632 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 363 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:00,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 643 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:00,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2022-01-10 01:10:00,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2093. [2022-01-10 01:10:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2093 states, 2092 states have (on average 1.6003824091778203) internal successors, (3348), 2092 states have internal predecessors, (3348), 0 states have call successors, (0), 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 01:10:00,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 3348 transitions. [2022-01-10 01:10:00,736 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 3348 transitions. Word has length 65 [2022-01-10 01:10:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:00,740 INFO L470 AbstractCegarLoop]: Abstraction has 2093 states and 3348 transitions. [2022-01-10 01:10:00,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 01:10:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 3348 transitions. [2022-01-10 01:10:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 01:10:00,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:00,741 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] [2022-01-10 01:10:00,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:10:00,742 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:00,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:00,742 INFO L85 PathProgramCache]: Analyzing trace with hash -555653635, now seen corresponding path program 1 times [2022-01-10 01:10:00,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:00,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089172850] [2022-01-10 01:10:00,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:00,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:00,779 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 01:10:00,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:00,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089172850] [2022-01-10 01:10:00,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089172850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:00,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:00,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:00,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768635780] [2022-01-10 01:10:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:00,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:00,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:00,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:00,781 INFO L87 Difference]: Start difference. First operand 2093 states and 3348 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:10:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:00,940 INFO L93 Difference]: Finished difference Result 6043 states and 9733 transitions. [2022-01-10 01:10:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:00,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 01:10:00,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:00,955 INFO L225 Difference]: With dead ends: 6043 [2022-01-10 01:10:00,955 INFO L226 Difference]: Without dead ends: 4001 [2022-01-10 01:10:00,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:00,962 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 361 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:00,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 652 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4001 states. [2022-01-10 01:10:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4001 to 3031. [2022-01-10 01:10:01,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3031 states, 3030 states have (on average 1.5986798679867986) internal successors, (4844), 3030 states have internal predecessors, (4844), 0 states have call successors, (0), 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 01:10:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3031 states to 3031 states and 4844 transitions. [2022-01-10 01:10:01,119 INFO L78 Accepts]: Start accepts. Automaton has 3031 states and 4844 transitions. Word has length 66 [2022-01-10 01:10:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:01,119 INFO L470 AbstractCegarLoop]: Abstraction has 3031 states and 4844 transitions. [2022-01-10 01:10:01,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:10:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states and 4844 transitions. [2022-01-10 01:10:01,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 01:10:01,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:01,121 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] [2022-01-10 01:10:01,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:10:01,122 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:01,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:01,122 INFO L85 PathProgramCache]: Analyzing trace with hash -378063148, now seen corresponding path program 1 times [2022-01-10 01:10:01,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:01,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793209182] [2022-01-10 01:10:01,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:01,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,155 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 01:10:01,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:01,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793209182] [2022-01-10 01:10:01,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793209182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:01,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:01,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:01,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225621858] [2022-01-10 01:10:01,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:01,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:01,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:01,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:01,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:01,157 INFO L87 Difference]: Start difference. First operand 3031 states and 4844 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:10:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:01,316 INFO L93 Difference]: Finished difference Result 6926 states and 11080 transitions. [2022-01-10 01:10:01,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:01,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 01:10:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:01,333 INFO L225 Difference]: With dead ends: 6926 [2022-01-10 01:10:01,334 INFO L226 Difference]: Without dead ends: 4772 [2022-01-10 01:10:01,338 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 01:10:01,338 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 96 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 402 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 01:10:01,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 402 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4772 states. [2022-01-10 01:10:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4772 to 4770. [2022-01-10 01:10:01,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4769 states have (on average 1.5848186202558188) internal successors, (7558), 4769 states have internal predecessors, (7558), 0 states have call successors, (0), 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 01:10:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 7558 transitions. [2022-01-10 01:10:01,551 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 7558 transitions. Word has length 66 [2022-01-10 01:10:01,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:01,551 INFO L470 AbstractCegarLoop]: Abstraction has 4770 states and 7558 transitions. [2022-01-10 01:10:01,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:10:01,552 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 7558 transitions. [2022-01-10 01:10:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 01:10:01,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:01,553 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] [2022-01-10 01:10:01,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:10:01,553 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:01,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1715532573, now seen corresponding path program 1 times [2022-01-10 01:10:01,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:01,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085509001] [2022-01-10 01:10:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:01,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:01,581 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 01:10:01,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:01,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085509001] [2022-01-10 01:10:01,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085509001] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:01,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:01,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:01,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684196690] [2022-01-10 01:10:01,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:01,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:01,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:01,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:01,583 INFO L87 Difference]: Start difference. First operand 4770 states and 7558 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:10:01,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:01,825 INFO L93 Difference]: Finished difference Result 10466 states and 16644 transitions. [2022-01-10 01:10:01,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:01,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 01:10:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:01,866 INFO L225 Difference]: With dead ends: 10466 [2022-01-10 01:10:01,867 INFO L226 Difference]: Without dead ends: 7109 [2022-01-10 01:10:01,871 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 01:10:01,872 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 102 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 431 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 01:10:01,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 431 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:01,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7109 states. [2022-01-10 01:10:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7109 to 7107. [2022-01-10 01:10:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7107 states, 7106 states have (on average 1.5757106670419363) internal successors, (11197), 7106 states have internal predecessors, (11197), 0 states have call successors, (0), 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 01:10:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7107 states to 7107 states and 11197 transitions. [2022-01-10 01:10:02,156 INFO L78 Accepts]: Start accepts. Automaton has 7107 states and 11197 transitions. Word has length 66 [2022-01-10 01:10:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:02,157 INFO L470 AbstractCegarLoop]: Abstraction has 7107 states and 11197 transitions. [2022-01-10 01:10:02,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:10:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7107 states and 11197 transitions. [2022-01-10 01:10:02,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 01:10:02,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:02,158 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] [2022-01-10 01:10:02,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:10:02,158 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:02,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1204542386, now seen corresponding path program 1 times [2022-01-10 01:10:02,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:02,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567497690] [2022-01-10 01:10:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:02,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:02,232 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 01:10:02,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:02,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567497690] [2022-01-10 01:10:02,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567497690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:02,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:02,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:02,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264525980] [2022-01-10 01:10:02,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:02,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:02,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:02,234 INFO L87 Difference]: Start difference. First operand 7107 states and 11197 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:10:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:02,613 INFO L93 Difference]: Finished difference Result 15863 states and 25260 transitions. [2022-01-10 01:10:02,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:02,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-01-10 01:10:02,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:02,635 INFO L225 Difference]: With dead ends: 15863 [2022-01-10 01:10:02,635 INFO L226 Difference]: Without dead ends: 10685 [2022-01-10 01:10:02,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:02,644 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 452 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 01:10:02,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 452 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10685 states. [2022-01-10 01:10:03,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10685 to 10683. [2022-01-10 01:10:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10683 states, 10682 states have (on average 1.5719902639955066) internal successors, (16792), 10682 states have internal predecessors, (16792), 0 states have call successors, (0), 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 01:10:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10683 states to 10683 states and 16792 transitions. [2022-01-10 01:10:03,096 INFO L78 Accepts]: Start accepts. Automaton has 10683 states and 16792 transitions. Word has length 66 [2022-01-10 01:10:03,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:03,096 INFO L470 AbstractCegarLoop]: Abstraction has 10683 states and 16792 transitions. [2022-01-10 01:10:03,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 01:10:03,097 INFO L276 IsEmpty]: Start isEmpty. Operand 10683 states and 16792 transitions. [2022-01-10 01:10:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 01:10:03,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:03,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:03,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:10:03,098 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:03,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:03,099 INFO L85 PathProgramCache]: Analyzing trace with hash 760246741, now seen corresponding path program 1 times [2022-01-10 01:10:03,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:03,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337700707] [2022-01-10 01:10:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:03,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:03,195 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 01:10:03,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:03,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337700707] [2022-01-10 01:10:03,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337700707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:03,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:03,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:10:03,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704592753] [2022-01-10 01:10:03,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:03,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:10:03,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:03,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:10:03,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:03,197 INFO L87 Difference]: Start difference. First operand 10683 states and 16792 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 01:10:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:03,663 INFO L93 Difference]: Finished difference Result 21295 states and 33486 transitions. [2022-01-10 01:10:03,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:10:03,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 01:10:03,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:03,686 INFO L225 Difference]: With dead ends: 21295 [2022-01-10 01:10:03,686 INFO L226 Difference]: Without dead ends: 10685 [2022-01-10 01:10:03,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:10:03,698 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 362 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:03,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 526 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:03,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10685 states. [2022-01-10 01:10:04,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10685 to 10683. [2022-01-10 01:10:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10683 states, 10682 states have (on average 1.5602883355176933) internal successors, (16667), 10682 states have internal predecessors, (16667), 0 states have call successors, (0), 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 01:10:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10683 states to 10683 states and 16667 transitions. [2022-01-10 01:10:04,155 INFO L78 Accepts]: Start accepts. Automaton has 10683 states and 16667 transitions. Word has length 68 [2022-01-10 01:10:04,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:04,155 INFO L470 AbstractCegarLoop]: Abstraction has 10683 states and 16667 transitions. [2022-01-10 01:10:04,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 01:10:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 10683 states and 16667 transitions. [2022-01-10 01:10:04,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 01:10:04,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:04,156 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] [2022-01-10 01:10:04,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:10:04,157 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:04,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1443931136, now seen corresponding path program 1 times [2022-01-10 01:10:04,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:04,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803674838] [2022-01-10 01:10:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:04,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:04,244 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 01:10:04,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:04,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803674838] [2022-01-10 01:10:04,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803674838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:04,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:04,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:10:04,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497049899] [2022-01-10 01:10:04,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:04,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:10:04,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:04,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:10:04,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:04,246 INFO L87 Difference]: Start difference. First operand 10683 states and 16667 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 01:10:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:05,007 INFO L93 Difference]: Finished difference Result 30609 states and 47906 transitions. [2022-01-10 01:10:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:10:05,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 01:10:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:05,122 INFO L225 Difference]: With dead ends: 30609 [2022-01-10 01:10:05,123 INFO L226 Difference]: Without dead ends: 19999 [2022-01-10 01:10:05,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:10:05,136 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 356 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:05,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 528 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19999 states. [2022-01-10 01:10:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19999 to 19997. [2022-01-10 01:10:05,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19997 states, 19996 states have (on average 1.5477095419083817) internal successors, (30948), 19996 states have internal predecessors, (30948), 0 states have call successors, (0), 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 01:10:05,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19997 states to 19997 states and 30948 transitions. [2022-01-10 01:10:05,953 INFO L78 Accepts]: Start accepts. Automaton has 19997 states and 30948 transitions. Word has length 71 [2022-01-10 01:10:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:05,953 INFO L470 AbstractCegarLoop]: Abstraction has 19997 states and 30948 transitions. [2022-01-10 01:10:05,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 01:10:05,953 INFO L276 IsEmpty]: Start isEmpty. Operand 19997 states and 30948 transitions. [2022-01-10 01:10:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:10:05,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:05,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:05,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:10:05,954 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2054199358, now seen corresponding path program 1 times [2022-01-10 01:10:05,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:05,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600123704] [2022-01-10 01:10:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:05,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:06,029 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 01:10:06,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:06,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600123704] [2022-01-10 01:10:06,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600123704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:06,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:06,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:10:06,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573390552] [2022-01-10 01:10:06,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:06,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:10:06,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:06,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:10:06,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:06,031 INFO L87 Difference]: Start difference. First operand 19997 states and 30948 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 01:10:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:07,416 INFO L93 Difference]: Finished difference Result 39185 states and 60002 transitions. [2022-01-10 01:10:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:10:07,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 01:10:07,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:07,523 INFO L225 Difference]: With dead ends: 39185 [2022-01-10 01:10:07,523 INFO L226 Difference]: Without dead ends: 39183 [2022-01-10 01:10:07,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:10:07,539 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 323 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 842 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 01:10:07,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 842 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39183 states. [2022-01-10 01:10:08,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39183 to 21083. [2022-01-10 01:10:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21083 states, 21082 states have (on average 1.5190683995825822) internal successors, (32025), 21082 states have internal predecessors, (32025), 0 states have call successors, (0), 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 01:10:08,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21083 states to 21083 states and 32025 transitions. [2022-01-10 01:10:08,566 INFO L78 Accepts]: Start accepts. Automaton has 21083 states and 32025 transitions. Word has length 72 [2022-01-10 01:10:08,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:08,566 INFO L470 AbstractCegarLoop]: Abstraction has 21083 states and 32025 transitions. [2022-01-10 01:10:08,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 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 01:10:08,566 INFO L276 IsEmpty]: Start isEmpty. Operand 21083 states and 32025 transitions. [2022-01-10 01:10:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 01:10:08,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:08,568 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:08,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:10:08,569 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:08,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1220786708, now seen corresponding path program 1 times [2022-01-10 01:10:08,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:08,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021425631] [2022-01-10 01:10:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:08,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 01:10:08,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:08,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021425631] [2022-01-10 01:10:08,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021425631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:08,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:08,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:10:08,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516773654] [2022-01-10 01:10:08,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:08,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:10:08,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:10:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:08,643 INFO L87 Difference]: Start difference. First operand 21083 states and 32025 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:10:10,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:10,017 INFO L93 Difference]: Finished difference Result 51593 states and 78687 transitions. [2022-01-10 01:10:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:10:10,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 99 [2022-01-10 01:10:10,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:10,101 INFO L225 Difference]: With dead ends: 51593 [2022-01-10 01:10:10,101 INFO L226 Difference]: Without dead ends: 41591 [2022-01-10 01:10:10,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:10:10,122 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 463 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:10,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 822 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41591 states. [2022-01-10 01:10:11,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41591 to 32423. [2022-01-10 01:10:11,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32423 states, 32422 states have (on average 1.518074147184011) internal successors, (49219), 32422 states have internal predecessors, (49219), 0 states have call successors, (0), 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 01:10:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32423 states to 32423 states and 49219 transitions. [2022-01-10 01:10:11,716 INFO L78 Accepts]: Start accepts. Automaton has 32423 states and 49219 transitions. Word has length 99 [2022-01-10 01:10:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:11,717 INFO L470 AbstractCegarLoop]: Abstraction has 32423 states and 49219 transitions. [2022-01-10 01:10:11,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 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 01:10:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 32423 states and 49219 transitions. [2022-01-10 01:10:11,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 01:10:11,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:11,890 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:11,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:10:11,890 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:11,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:11,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1736711163, now seen corresponding path program 1 times [2022-01-10 01:10:11,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:11,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553355481] [2022-01-10 01:10:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:11,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:10:11,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:11,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553355481] [2022-01-10 01:10:11,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553355481] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:11,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:11,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:10:11,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309897347] [2022-01-10 01:10:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:11,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:10:11,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:11,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:10:11,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:11,945 INFO L87 Difference]: Start difference. First operand 32423 states and 49219 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:10:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:13,655 INFO L93 Difference]: Finished difference Result 55601 states and 84823 transitions. [2022-01-10 01:10:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:10:13,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 99 [2022-01-10 01:10:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:13,721 INFO L225 Difference]: With dead ends: 55601 [2022-01-10 01:10:13,722 INFO L226 Difference]: Without dead ends: 45599 [2022-01-10 01:10:13,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:10:13,742 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 454 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:13,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 942 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:10:13,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45599 states. [2022-01-10 01:10:15,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45599 to 43945. [2022-01-10 01:10:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43945 states, 43944 states have (on average 1.519229018751138) internal successors, (66761), 43944 states have internal predecessors, (66761), 0 states have call successors, (0), 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 01:10:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43945 states to 43945 states and 66761 transitions. [2022-01-10 01:10:15,487 INFO L78 Accepts]: Start accepts. Automaton has 43945 states and 66761 transitions. Word has length 99 [2022-01-10 01:10:15,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:15,487 INFO L470 AbstractCegarLoop]: Abstraction has 43945 states and 66761 transitions. [2022-01-10 01:10:15,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 01:10:15,488 INFO L276 IsEmpty]: Start isEmpty. Operand 43945 states and 66761 transitions. [2022-01-10 01:10:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 01:10:15,491 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:15,492 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:15,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:10:15,492 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash 361818826, now seen corresponding path program 1 times [2022-01-10 01:10:15,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:15,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341913289] [2022-01-10 01:10:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:15,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:10:15,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:15,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341913289] [2022-01-10 01:10:15,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341913289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:15,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:15,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:10:15,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587531668] [2022-01-10 01:10:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:15,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:10:15,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:10:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:10:15,555 INFO L87 Difference]: Start difference. First operand 43945 states and 66761 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 01:10:17,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:17,625 INFO L93 Difference]: Finished difference Result 62437 states and 95433 transitions. [2022-01-10 01:10:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:10:17,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 99 [2022-01-10 01:10:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:17,705 INFO L225 Difference]: With dead ends: 62437 [2022-01-10 01:10:17,705 INFO L226 Difference]: Without dead ends: 52175 [2022-01-10 01:10:17,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:10:17,732 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 454 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:17,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 891 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52175 states. [2022-01-10 01:10:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52175 to 50521. [2022-01-10 01:10:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50521 states, 50520 states have (on average 1.5221892319873318) internal successors, (76901), 50520 states have internal predecessors, (76901), 0 states have call successors, (0), 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 01:10:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50521 states to 50521 states and 76901 transitions. [2022-01-10 01:10:19,967 INFO L78 Accepts]: Start accepts. Automaton has 50521 states and 76901 transitions. Word has length 99 [2022-01-10 01:10:19,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:19,967 INFO L470 AbstractCegarLoop]: Abstraction has 50521 states and 76901 transitions. [2022-01-10 01:10:19,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 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 01:10:19,967 INFO L276 IsEmpty]: Start isEmpty. Operand 50521 states and 76901 transitions. [2022-01-10 01:10:19,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 01:10:19,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:19,970 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:19,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:10:19,970 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:19,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:19,970 INFO L85 PathProgramCache]: Analyzing trace with hash 703616354, now seen corresponding path program 1 times [2022-01-10 01:10:19,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:19,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927720453] [2022-01-10 01:10:19,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:19,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:10:20,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:20,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927720453] [2022-01-10 01:10:20,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927720453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:20,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:20,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:20,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259689662] [2022-01-10 01:10:20,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:20,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:20,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:20,019 INFO L87 Difference]: Start difference. First operand 50521 states and 76901 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:10:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:22,409 INFO L93 Difference]: Finished difference Result 82494 states and 126290 transitions. [2022-01-10 01:10:22,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:22,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 100 [2022-01-10 01:10:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:22,520 INFO L225 Difference]: With dead ends: 82494 [2022-01-10 01:10:22,521 INFO L226 Difference]: Without dead ends: 65656 [2022-01-10 01:10:22,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:22,543 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 195 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:22,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 664 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65656 states. [2022-01-10 01:10:25,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65656 to 64004. [2022-01-10 01:10:25,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64004 states, 64003 states have (on average 1.5227254972423168) internal successors, (97459), 64003 states have internal predecessors, (97459), 0 states have call successors, (0), 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 01:10:25,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64004 states to 64004 states and 97459 transitions. [2022-01-10 01:10:25,304 INFO L78 Accepts]: Start accepts. Automaton has 64004 states and 97459 transitions. Word has length 100 [2022-01-10 01:10:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:25,305 INFO L470 AbstractCegarLoop]: Abstraction has 64004 states and 97459 transitions. [2022-01-10 01:10:25,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:10:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 64004 states and 97459 transitions. [2022-01-10 01:10:25,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 01:10:25,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:25,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:25,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:10:25,307 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:25,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1126318180, now seen corresponding path program 1 times [2022-01-10 01:10:25,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:25,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994211151] [2022-01-10 01:10:25,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:25,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 01:10:25,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:25,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994211151] [2022-01-10 01:10:25,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994211151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:25,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:25,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:25,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119960808] [2022-01-10 01:10:25,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:25,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:25,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:25,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:25,345 INFO L87 Difference]: Start difference. First operand 64004 states and 97459 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:10:29,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:29,408 INFO L93 Difference]: Finished difference Result 138461 states and 211669 transitions. [2022-01-10 01:10:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:29,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 100 [2022-01-10 01:10:29,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:29,721 INFO L225 Difference]: With dead ends: 138461 [2022-01-10 01:10:29,721 INFO L226 Difference]: Without dead ends: 108269 [2022-01-10 01:10:29,768 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 01:10:29,771 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 85 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:29,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 355 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:29,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108269 states. [2022-01-10 01:10:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108269 to 107991. [2022-01-10 01:10:34,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107991 states, 107990 states have (on average 1.5230299101768683) internal successors, (164472), 107990 states have internal predecessors, (164472), 0 states have call successors, (0), 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 01:10:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107991 states to 107991 states and 164472 transitions. [2022-01-10 01:10:34,767 INFO L78 Accepts]: Start accepts. Automaton has 107991 states and 164472 transitions. Word has length 100 [2022-01-10 01:10:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:34,767 INFO L470 AbstractCegarLoop]: Abstraction has 107991 states and 164472 transitions. [2022-01-10 01:10:34,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 01:10:34,767 INFO L276 IsEmpty]: Start isEmpty. Operand 107991 states and 164472 transitions. [2022-01-10 01:10:34,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:10:34,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:34,769 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:34,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:10:34,769 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:34,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:34,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1300018162, now seen corresponding path program 1 times [2022-01-10 01:10:34,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:34,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464015617] [2022-01-10 01:10:34,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:34,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:34,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:10:34,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:34,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464015617] [2022-01-10 01:10:34,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464015617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:34,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:34,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:10:34,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46042975] [2022-01-10 01:10:34,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:34,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:10:34,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:10:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:34,813 INFO L87 Difference]: Start difference. First operand 107991 states and 164472 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 01:10:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:39,736 INFO L93 Difference]: Finished difference Result 165344 states and 252841 transitions. [2022-01-10 01:10:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:10:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-01-10 01:10:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:40,093 INFO L225 Difference]: With dead ends: 165344 [2022-01-10 01:10:40,094 INFO L226 Difference]: Without dead ends: 134094 [2022-01-10 01:10:40,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:10:40,166 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 203 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:40,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 604 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:10:40,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134094 states. [2022-01-10 01:10:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134094 to 127514. [2022-01-10 01:10:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127514 states, 127513 states have (on average 1.5220722592990519) internal successors, (194084), 127513 states have internal predecessors, (194084), 0 states have call successors, (0), 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 01:10:45,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127514 states to 127514 states and 194084 transitions. [2022-01-10 01:10:45,878 INFO L78 Accepts]: Start accepts. Automaton has 127514 states and 194084 transitions. Word has length 101 [2022-01-10 01:10:45,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:10:45,879 INFO L470 AbstractCegarLoop]: Abstraction has 127514 states and 194084 transitions. [2022-01-10 01:10:45,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 01:10:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 127514 states and 194084 transitions. [2022-01-10 01:10:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 01:10:45,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:10:45,881 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:10:45,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:10:45,881 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:10:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:10:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 278949808, now seen corresponding path program 1 times [2022-01-10 01:10:45,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:10:45,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471672840] [2022-01-10 01:10:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:10:45,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:10:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:10:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 01:10:46,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:10:46,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471672840] [2022-01-10 01:10:46,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471672840] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:10:46,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:10:46,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:10:46,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056706087] [2022-01-10 01:10:46,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:10:46,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:10:46,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:10:46,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:10:46,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:10:46,132 INFO L87 Difference]: Start difference. First operand 127514 states and 194084 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 01:10:54,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:10:54,114 INFO L93 Difference]: Finished difference Result 270165 states and 412256 transitions. [2022-01-10 01:10:54,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:10:54,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-01-10 01:10:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:10:54,563 INFO L225 Difference]: With dead ends: 270165 [2022-01-10 01:10:54,563 INFO L226 Difference]: Without dead ends: 209745 [2022-01-10 01:10:54,652 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 01:10:54,652 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 85 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:10:54,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 354 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:10:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209745 states.