/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/eca-rers2012/Problem17_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:26:07,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:26:07,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:26:08,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:26:08,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 00:26:08,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 00:26:08,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 00:26:08,067 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 00:26:08,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:26:08,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:26:08,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:26:08,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:26:08,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:26:08,099 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:26:08,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:26:08,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:26:08,100 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:26:08,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:26:08,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:26:08,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:26:08,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:26:08,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:26:08,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:26:08,101 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:26:08,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:26:08,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:26:08,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:26:08,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:26:08,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:26:08,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:26:08,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:26:08,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:26:08,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:26:08,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:26:08,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:26:08,102 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:26:08,103 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:26:08,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:26:08,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:26:08,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:26:08,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:26:08,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:26:08,391 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:26:08,391 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:26:08,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2022-01-10 00:26:08,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/932adef21/ab847e5a4cf54b42bdc44d31973fca82/FLAG9046375f6 [2022-01-10 00:26:09,058 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:26:09,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label46.c [2022-01-10 00:26:09,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/932adef21/ab847e5a4cf54b42bdc44d31973fca82/FLAG9046375f6 [2022-01-10 00:26:09,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/932adef21/ab847e5a4cf54b42bdc44d31973fca82 [2022-01-10 00:26:09,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:26:09,263 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:26:09,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:26:09,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:26:09,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:26:09,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:26:09" (1/1) ... [2022-01-10 00:26:09,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adc51d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:09, skipping insertion in model container [2022-01-10 00:26:09,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:26:09" (1/1) ... [2022-01-10 00:26:09,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:26:09,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:26:09,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label46.c[1649,1662] [2022-01-10 00:26:10,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:26:10,121 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:26:10,133 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label46.c[1649,1662] [2022-01-10 00:26:10,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:26:10,394 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:26:10,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10 WrapperNode [2022-01-10 00:26:10,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:26:10,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:26:10,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:26:10,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:26:10,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,695 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:26:10,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:26:10,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:26:10,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:26:10,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:26:10,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:26:10,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:26:10,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:26:10,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:26:10,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (1/1) ... [2022-01-10 00:26:10,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:26:10,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:26:10,992 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 00:26:11,009 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 00:26:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:26:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:26:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:26:11,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:26:11,086 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:26:11,088 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:26:14,139 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:26:14,150 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:26:14,150 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:26:14,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:26:14 BoogieIcfgContainer [2022-01-10 00:26:14,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:26:14,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:26:14,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:26:14,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:26:14,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:26:09" (1/3) ... [2022-01-10 00:26:14,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa5e806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:26:14, skipping insertion in model container [2022-01-10 00:26:14,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:10" (2/3) ... [2022-01-10 00:26:14,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa5e806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:26:14, skipping insertion in model container [2022-01-10 00:26:14,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:26:14" (3/3) ... [2022-01-10 00:26:14,163 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label46.c [2022-01-10 00:26:14,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:26:14,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:26:14,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:26:14,225 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 00:26:14,225 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:26:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 00:26:14,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 00:26:14,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:14,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:14,262 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-01-10 00:26:14,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:14,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747699219] [2022-01-10 00:26:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:14,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:14,394 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 00:26:14,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:14,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747699219] [2022-01-10 00:26:14,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747699219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:14,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:14,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:14,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066672732] [2022-01-10 00:26:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:14,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:14,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:14,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:14,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:14,430 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 00:26:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:17,009 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-01-10 00:26:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:17,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-01-10 00:26:17,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:17,035 INFO L225 Difference]: With dead ends: 1642 [2022-01-10 00:26:17,035 INFO L226 Difference]: Without dead ends: 975 [2022-01-10 00:26:17,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:17,047 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 480 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:17,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:26:17,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-10 00:26:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-01-10 00:26:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 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 00:26:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-01-10 00:26:17,154 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 10 [2022-01-10 00:26:17,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:17,155 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-01-10 00:26:17,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 00:26:17,155 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-01-10 00:26:17,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 00:26:17,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:17,157 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:17,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:26:17,158 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:17,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash -225164890, now seen corresponding path program 1 times [2022-01-10 00:26:17,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:17,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690416775] [2022-01-10 00:26:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:17,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:17,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:17,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690416775] [2022-01-10 00:26:17,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690416775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:17,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:17,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:17,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042920495] [2022-01-10 00:26:17,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:17,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:17,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:17,332 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:19,564 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-01-10 00:26:19,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:19,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 00:26:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:19,574 INFO L225 Difference]: With dead ends: 2814 [2022-01-10 00:26:19,574 INFO L226 Difference]: Without dead ends: 1844 [2022-01-10 00:26:19,577 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 00:26:19,578 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 481 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:19,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:26:19,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-01-10 00:26:19,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-01-10 00:26:19,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 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 00:26:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-01-10 00:26:19,623 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 80 [2022-01-10 00:26:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:19,624 INFO L470 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-01-10 00:26:19,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:19,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-01-10 00:26:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 00:26:19,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:19,627 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:19,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:26:19,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1464739895, now seen corresponding path program 1 times [2022-01-10 00:26:19,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:19,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089915327] [2022-01-10 00:26:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:19,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:19,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:19,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:19,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089915327] [2022-01-10 00:26:19,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089915327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:19,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:19,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:19,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58323606] [2022-01-10 00:26:19,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:19,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:19,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:19,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:19,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:19,717 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:21,639 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-01-10 00:26:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:21,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2022-01-10 00:26:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:21,650 INFO L225 Difference]: With dead ends: 5395 [2022-01-10 00:26:21,650 INFO L226 Difference]: Without dead ends: 2701 [2022-01-10 00:26:21,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:21,656 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:21,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:26:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-01-10 00:26:21,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-01-10 00:26:21,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 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 00:26:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-01-10 00:26:21,710 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 102 [2022-01-10 00:26:21,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:21,710 INFO L470 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-01-10 00:26:21,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-01-10 00:26:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 00:26:21,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:21,713 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:21,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:26:21,714 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:21,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:21,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1549840643, now seen corresponding path program 1 times [2022-01-10 00:26:21,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:21,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818680779] [2022-01-10 00:26:21,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:21,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:21,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:21,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818680779] [2022-01-10 00:26:21,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818680779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:21,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:21,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:21,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678378541] [2022-01-10 00:26:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:21,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:21,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:21,887 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 00:26:23,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:23,366 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-01-10 00:26:23,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:23,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 162 [2022-01-10 00:26:23,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:23,381 INFO L225 Difference]: With dead ends: 7108 [2022-01-10 00:26:23,381 INFO L226 Difference]: Without dead ends: 4409 [2022-01-10 00:26:23,385 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 00:26:23,386 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:23,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:26:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-01-10 00:26:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-01-10 00:26:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 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 00:26:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-01-10 00:26:23,456 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 162 [2022-01-10 00:26:23,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:23,457 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-01-10 00:26:23,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 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 00:26:23,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-01-10 00:26:23,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 00:26:23,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:23,459 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:23,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:26:23,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:23,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2134418504, now seen corresponding path program 1 times [2022-01-10 00:26:23,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:23,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474935554] [2022-01-10 00:26:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:23,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:26:23,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:23,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474935554] [2022-01-10 00:26:23,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474935554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:23,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:23,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:23,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180825458] [2022-01-10 00:26:23,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:23,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:23,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:23,598 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 00:26:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:25,216 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-01-10 00:26:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 164 [2022-01-10 00:26:25,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:25,238 INFO L225 Difference]: With dead ends: 10936 [2022-01-10 00:26:25,238 INFO L226 Difference]: Without dead ends: 6528 [2022-01-10 00:26:25,245 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 00:26:25,246 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 441 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:25,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:26:25,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-01-10 00:26:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-01-10 00:26:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 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 00:26:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-01-10 00:26:25,326 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 164 [2022-01-10 00:26:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:25,327 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-01-10 00:26:25,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 00:26:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-01-10 00:26:25,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-01-10 00:26:25,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:25,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:26:25,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:26:25,332 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:25,333 INFO L85 PathProgramCache]: Analyzing trace with hash 741644542, now seen corresponding path program 1 times [2022-01-10 00:26:25,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:25,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712589171] [2022-01-10 00:26:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:25,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:25,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:25,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712589171] [2022-01-10 00:26:25,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712589171] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:26:25,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880134393] [2022-01-10 00:26:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:25,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:26:25,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:26:25,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:26:25,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:26:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:25,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:26:25,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:26:26,624 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 15 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:26,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:26:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:27,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880134393] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:26:27,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:26:27,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-01-10 00:26:27,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628570952] [2022-01-10 00:26:27,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:27,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:26:27,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:27,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:26:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:26:27,144 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 00:26:30,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:30,069 INFO L93 Difference]: Finished difference Result 15171 states and 17882 transitions. [2022-01-10 00:26:30,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:26:30,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 230 [2022-01-10 00:26:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:30,105 INFO L225 Difference]: With dead ends: 15171 [2022-01-10 00:26:30,105 INFO L226 Difference]: Without dead ends: 10791 [2022-01-10 00:26:30,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 455 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:26:30,113 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 980 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:30,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 145 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:26:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2022-01-10 00:26:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2022-01-10 00:26:30,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10789 states, 10788 states have (on average 1.1710233592880979) internal successors, (12633), 10788 states have internal predecessors, (12633), 0 states have call successors, (0), 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 00:26:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 12633 transitions. [2022-01-10 00:26:30,281 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 12633 transitions. Word has length 230 [2022-01-10 00:26:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:30,282 INFO L470 AbstractCegarLoop]: Abstraction has 10789 states and 12633 transitions. [2022-01-10 00:26:30,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 00:26:30,282 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 12633 transitions. [2022-01-10 00:26:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-01-10 00:26:30,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:30,285 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:30,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:26:30,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 00:26:30,500 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1310280645, now seen corresponding path program 1 times [2022-01-10 00:26:30,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:30,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396845157] [2022-01-10 00:26:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:30,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-01-10 00:26:30,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:30,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396845157] [2022-01-10 00:26:30,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396845157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:30,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:30,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:30,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117663099] [2022-01-10 00:26:30,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:30,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:30,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:30,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:30,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:30,627 INFO L87 Difference]: Start difference. First operand 10789 states and 12633 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 00:26:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:32,356 INFO L93 Difference]: Finished difference Result 23703 states and 27793 transitions. [2022-01-10 00:26:32,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:32,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 242 [2022-01-10 00:26:32,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:32,383 INFO L225 Difference]: With dead ends: 23703 [2022-01-10 00:26:32,383 INFO L226 Difference]: Without dead ends: 12491 [2022-01-10 00:26:32,393 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 00:26:32,394 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:32,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 842 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:26:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2022-01-10 00:26:32,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12491. [2022-01-10 00:26:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 1.1501200960768614) internal successors, (14365), 12490 states have internal predecessors, (14365), 0 states have call successors, (0), 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 00:26:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 14365 transitions. [2022-01-10 00:26:32,571 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 14365 transitions. Word has length 242 [2022-01-10 00:26:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:32,571 INFO L470 AbstractCegarLoop]: Abstraction has 12491 states and 14365 transitions. [2022-01-10 00:26:32,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 00:26:32,572 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 14365 transitions. [2022-01-10 00:26:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-01-10 00:26:32,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:32,576 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 00:26:32,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:26:32,576 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:32,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:32,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2057438562, now seen corresponding path program 1 times [2022-01-10 00:26:32,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:32,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951043932] [2022-01-10 00:26:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:32,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:32,703 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-01-10 00:26:32,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:32,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951043932] [2022-01-10 00:26:32,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951043932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:32,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:32,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:32,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809395518] [2022-01-10 00:26:32,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:32,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:32,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:32,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:32,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:32,705 INFO L87 Difference]: Start difference. First operand 12491 states and 14365 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 00:26:34,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:34,439 INFO L93 Difference]: Finished difference Result 30511 states and 34976 transitions. [2022-01-10 00:26:34,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:34,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 282 [2022-01-10 00:26:34,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:34,466 INFO L225 Difference]: With dead ends: 30511 [2022-01-10 00:26:34,467 INFO L226 Difference]: Without dead ends: 15866 [2022-01-10 00:26:34,480 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 00:26:34,481 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 534 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:34,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 640 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:26:34,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15866 states. [2022-01-10 00:26:34,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15866 to 15010. [2022-01-10 00:26:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15010 states, 15009 states have (on average 1.1277233659804118) internal successors, (16926), 15009 states have internal predecessors, (16926), 0 states have call successors, (0), 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 00:26:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15010 states to 15010 states and 16926 transitions. [2022-01-10 00:26:34,747 INFO L78 Accepts]: Start accepts. Automaton has 15010 states and 16926 transitions. Word has length 282 [2022-01-10 00:26:34,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:34,748 INFO L470 AbstractCegarLoop]: Abstraction has 15010 states and 16926 transitions. [2022-01-10 00:26:34,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 00:26:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 15010 states and 16926 transitions. [2022-01-10 00:26:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-01-10 00:26:34,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:34,753 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:34,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:26:34,753 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:34,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:34,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1507858308, now seen corresponding path program 1 times [2022-01-10 00:26:34,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:34,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502940865] [2022-01-10 00:26:34,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:34,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-10 00:26:34,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:34,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502940865] [2022-01-10 00:26:34,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502940865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:34,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:34,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:34,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24628326] [2022-01-10 00:26:34,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:34,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:34,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:34,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:34,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:34,890 INFO L87 Difference]: Start difference. First operand 15010 states and 16926 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 00:26:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:36,626 INFO L93 Difference]: Finished difference Result 38116 states and 42953 transitions. [2022-01-10 00:26:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 304 [2022-01-10 00:26:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:36,668 INFO L225 Difference]: With dead ends: 38116 [2022-01-10 00:26:36,669 INFO L226 Difference]: Without dead ends: 23108 [2022-01-10 00:26:36,686 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 00:26:36,686 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 316 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:36,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 784 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:26:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23108 states. [2022-01-10 00:26:36,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23108 to 22244. [2022-01-10 00:26:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22244 states, 22243 states have (on average 1.1109562559007329) internal successors, (24711), 22243 states have internal predecessors, (24711), 0 states have call successors, (0), 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 00:26:37,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22244 states to 22244 states and 24711 transitions. [2022-01-10 00:26:37,101 INFO L78 Accepts]: Start accepts. Automaton has 22244 states and 24711 transitions. Word has length 304 [2022-01-10 00:26:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:37,101 INFO L470 AbstractCegarLoop]: Abstraction has 22244 states and 24711 transitions. [2022-01-10 00:26:37,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 00:26:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 22244 states and 24711 transitions. [2022-01-10 00:26:37,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-10 00:26:37,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:37,107 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:37,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:26:37,107 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1876690948, now seen corresponding path program 1 times [2022-01-10 00:26:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:37,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109755694] [2022-01-10 00:26:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:37,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:37,243 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-01-10 00:26:37,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:37,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109755694] [2022-01-10 00:26:37,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109755694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:37,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:37,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:37,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885855132] [2022-01-10 00:26:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:37,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:37,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:37,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:37,246 INFO L87 Difference]: Start difference. First operand 22244 states and 24711 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 00:26:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:38,739 INFO L93 Difference]: Finished difference Result 47458 states and 52810 transitions. [2022-01-10 00:26:38,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:38,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 309 [2022-01-10 00:26:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:38,779 INFO L225 Difference]: With dead ends: 47458 [2022-01-10 00:26:38,779 INFO L226 Difference]: Without dead ends: 24791 [2022-01-10 00:26:38,798 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 00:26:38,799 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 460 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:38,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 702 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:26:38,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24791 states. [2022-01-10 00:26:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24791 to 24785. [2022-01-10 00:26:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24785 states, 24784 states have (on average 1.107125564880568) internal successors, (27439), 24784 states have internal predecessors, (27439), 0 states have call successors, (0), 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 00:26:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24785 states to 24785 states and 27439 transitions. [2022-01-10 00:26:39,158 INFO L78 Accepts]: Start accepts. Automaton has 24785 states and 27439 transitions. Word has length 309 [2022-01-10 00:26:39,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:39,159 INFO L470 AbstractCegarLoop]: Abstraction has 24785 states and 27439 transitions. [2022-01-10 00:26:39,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 00:26:39,159 INFO L276 IsEmpty]: Start isEmpty. Operand 24785 states and 27439 transitions. [2022-01-10 00:26:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2022-01-10 00:26:39,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:39,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:26:39,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:26:39,168 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:39,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2084541808, now seen corresponding path program 1 times [2022-01-10 00:26:39,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:39,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122910728] [2022-01-10 00:26:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:39,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:39,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:39,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122910728] [2022-01-10 00:26:39,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122910728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:39,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:39,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:39,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415175640] [2022-01-10 00:26:39,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:39,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:26:39,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:26:39,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:26:39,345 INFO L87 Difference]: Start difference. First operand 24785 states and 27439 transitions. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 00:26:42,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:42,099 INFO L93 Difference]: Finished difference Result 63641 states and 70643 transitions. [2022-01-10 00:26:42,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:26:42,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 349 [2022-01-10 00:26:42,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:42,148 INFO L225 Difference]: With dead ends: 63641 [2022-01-10 00:26:42,149 INFO L226 Difference]: Without dead ends: 38008 [2022-01-10 00:26:42,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 00:26:42,180 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 556 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 2614 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 2772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 2614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:42,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 326 Invalid, 2772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 2614 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:26:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38008 states. [2022-01-10 00:26:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38008 to 37986. [2022-01-10 00:26:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37986 states, 37985 states have (on average 1.1046728971962616) internal successors, (41961), 37985 states have internal predecessors, (41961), 0 states have call successors, (0), 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 00:26:42,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37986 states to 37986 states and 41961 transitions. [2022-01-10 00:26:42,683 INFO L78 Accepts]: Start accepts. Automaton has 37986 states and 41961 transitions. Word has length 349 [2022-01-10 00:26:42,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:42,684 INFO L470 AbstractCegarLoop]: Abstraction has 37986 states and 41961 transitions. [2022-01-10 00:26:42,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 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 00:26:42,684 INFO L276 IsEmpty]: Start isEmpty. Operand 37986 states and 41961 transitions. [2022-01-10 00:26:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2022-01-10 00:26:42,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:42,692 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:26:42,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:26:42,692 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1238549206, now seen corresponding path program 1 times [2022-01-10 00:26:42,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:42,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259284014] [2022-01-10 00:26:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:42,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:26:42,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:42,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259284014] [2022-01-10 00:26:42,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259284014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:42,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:42,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:42,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614472978] [2022-01-10 00:26:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:42,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:42,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:42,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:42,838 INFO L87 Difference]: Start difference. First operand 37986 states and 41961 transitions. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 00:26:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:44,573 INFO L93 Difference]: Finished difference Result 85365 states and 94453 transitions. [2022-01-10 00:26:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:44,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 353 [2022-01-10 00:26:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:44,627 INFO L225 Difference]: With dead ends: 85365 [2022-01-10 00:26:44,627 INFO L226 Difference]: Without dead ends: 47381 [2022-01-10 00:26:44,656 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 00:26:44,657 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 337 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:44,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 652 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:26:44,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47381 states. [2022-01-10 00:26:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47381 to 46935. [2022-01-10 00:26:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46935 states, 46934 states have (on average 1.1060212212894702) internal successors, (51910), 46934 states have internal predecessors, (51910), 0 states have call successors, (0), 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 00:26:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46935 states to 46935 states and 51910 transitions. [2022-01-10 00:26:45,241 INFO L78 Accepts]: Start accepts. Automaton has 46935 states and 51910 transitions. Word has length 353 [2022-01-10 00:26:45,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:45,241 INFO L470 AbstractCegarLoop]: Abstraction has 46935 states and 51910 transitions. [2022-01-10 00:26:45,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 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 00:26:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 46935 states and 51910 transitions. [2022-01-10 00:26:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-01-10 00:26:45,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:45,253 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:26:45,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:26:45,253 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:45,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:45,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2012753800, now seen corresponding path program 1 times [2022-01-10 00:26:45,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:45,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170891134] [2022-01-10 00:26:45,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:45,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:26:45,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:45,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170891134] [2022-01-10 00:26:45,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170891134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:45,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:45,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:45,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451158990] [2022-01-10 00:26:45,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:45,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:45,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:45,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:45,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:45,560 INFO L87 Difference]: Start difference. First operand 46935 states and 51910 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 00:26:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:47,474 INFO L93 Difference]: Finished difference Result 104932 states and 116096 transitions. [2022-01-10 00:26:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 424 [2022-01-10 00:26:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:47,546 INFO L225 Difference]: With dead ends: 104932 [2022-01-10 00:26:47,546 INFO L226 Difference]: Without dead ends: 57999 [2022-01-10 00:26:47,566 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 00:26:47,567 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 305 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1187 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:47,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 327 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1187 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:26:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57999 states. [2022-01-10 00:26:48,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57999 to 54591. [2022-01-10 00:26:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54591 states, 54590 states have (on average 1.0996519509067595) internal successors, (60030), 54590 states have internal predecessors, (60030), 0 states have call successors, (0), 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 00:26:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54591 states to 54591 states and 60030 transitions. [2022-01-10 00:26:48,241 INFO L78 Accepts]: Start accepts. Automaton has 54591 states and 60030 transitions. Word has length 424 [2022-01-10 00:26:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:48,241 INFO L470 AbstractCegarLoop]: Abstraction has 54591 states and 60030 transitions. [2022-01-10 00:26:48,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 00:26:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 54591 states and 60030 transitions. [2022-01-10 00:26:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-01-10 00:26:48,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:48,258 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-01-10 00:26:48,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:26:48,258 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 368948727, now seen corresponding path program 1 times [2022-01-10 00:26:48,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:48,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544937713] [2022-01-10 00:26:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:48,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-01-10 00:26:48,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:48,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544937713] [2022-01-10 00:26:48,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544937713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:48,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:48,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:48,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456520109] [2022-01-10 00:26:48,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:48,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:48,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:48,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:48,671 INFO L87 Difference]: Start difference. First operand 54591 states and 60030 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:50,401 INFO L93 Difference]: Finished difference Result 119829 states and 131917 transitions. [2022-01-10 00:26:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:50,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 473 [2022-01-10 00:26:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:50,473 INFO L225 Difference]: With dead ends: 119829 [2022-01-10 00:26:50,473 INFO L226 Difference]: Without dead ends: 65240 [2022-01-10 00:26:50,495 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 00:26:50,496 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 316 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:50,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 325 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:26:50,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65240 states. [2022-01-10 00:26:51,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65240 to 57569. [2022-01-10 00:26:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57569 states, 57568 states have (on average 1.097206781545303) internal successors, (63164), 57568 states have internal predecessors, (63164), 0 states have call successors, (0), 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 00:26:51,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57569 states to 57569 states and 63164 transitions. [2022-01-10 00:26:51,282 INFO L78 Accepts]: Start accepts. Automaton has 57569 states and 63164 transitions. Word has length 473 [2022-01-10 00:26:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:51,283 INFO L470 AbstractCegarLoop]: Abstraction has 57569 states and 63164 transitions. [2022-01-10 00:26:51,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 57569 states and 63164 transitions. [2022-01-10 00:26:51,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-01-10 00:26:51,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:51,298 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:51,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:26:51,298 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash -686282333, now seen corresponding path program 1 times [2022-01-10 00:26:51,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:51,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447975620] [2022-01-10 00:26:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:51,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-01-10 00:26:51,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:51,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447975620] [2022-01-10 00:26:51,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447975620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:51,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:51,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:51,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648697198] [2022-01-10 00:26:51,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:51,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:51,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:51,500 INFO L87 Difference]: Start difference. First operand 57569 states and 63164 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 00:26:52,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:52,636 INFO L93 Difference]: Finished difference Result 114273 states and 125404 transitions. [2022-01-10 00:26:52,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:52,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 484 [2022-01-10 00:26:52,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:52,709 INFO L225 Difference]: With dead ends: 114273 [2022-01-10 00:26:52,709 INFO L226 Difference]: Without dead ends: 56705 [2022-01-10 00:26:52,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:52,745 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:52,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 82 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 00:26:52,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56705 states. [2022-01-10 00:26:53,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56705 to 56701. [2022-01-10 00:26:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56701 states, 56700 states have (on average 1.0971428571428572) internal successors, (62208), 56700 states have internal predecessors, (62208), 0 states have call successors, (0), 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 00:26:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56701 states to 56701 states and 62208 transitions. [2022-01-10 00:26:53,546 INFO L78 Accepts]: Start accepts. Automaton has 56701 states and 62208 transitions. Word has length 484 [2022-01-10 00:26:53,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:53,547 INFO L470 AbstractCegarLoop]: Abstraction has 56701 states and 62208 transitions. [2022-01-10 00:26:53,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 2 states have internal predecessors, (292), 0 states have call successors, (0), 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 00:26:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 56701 states and 62208 transitions. [2022-01-10 00:26:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-01-10 00:26:53,557 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:53,558 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:53,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:26:53,558 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash 144822832, now seen corresponding path program 1 times [2022-01-10 00:26:53,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:53,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216823015] [2022-01-10 00:26:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:53,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-01-10 00:26:53,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:53,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216823015] [2022-01-10 00:26:53,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216823015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:53,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:53,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:53,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704747408] [2022-01-10 00:26:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:53,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:53,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:53,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:53,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:53,739 INFO L87 Difference]: Start difference. First operand 56701 states and 62208 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 00:26:55,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:55,715 INFO L93 Difference]: Finished difference Result 122760 states and 134268 transitions. [2022-01-10 00:26:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:55,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 488 [2022-01-10 00:26:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:55,790 INFO L225 Difference]: With dead ends: 122760 [2022-01-10 00:26:55,790 INFO L226 Difference]: Without dead ends: 66061 [2022-01-10 00:26:55,826 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 00:26:55,827 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 333 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:55,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 119 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:26:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66061 states. [2022-01-10 00:26:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66061 to 52842. [2022-01-10 00:26:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52842 states, 52841 states have (on average 1.088756836547378) internal successors, (57531), 52841 states have internal predecessors, (57531), 0 states have call successors, (0), 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 00:26:56,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52842 states to 52842 states and 57531 transitions. [2022-01-10 00:26:56,648 INFO L78 Accepts]: Start accepts. Automaton has 52842 states and 57531 transitions. Word has length 488 [2022-01-10 00:26:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:56,648 INFO L470 AbstractCegarLoop]: Abstraction has 52842 states and 57531 transitions. [2022-01-10 00:26:56,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 00:26:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 52842 states and 57531 transitions. [2022-01-10 00:26:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-01-10 00:26:56,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:56,666 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:26:56,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:26:56,666 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:56,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:56,667 INFO L85 PathProgramCache]: Analyzing trace with hash -439942955, now seen corresponding path program 1 times [2022-01-10 00:26:56,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:56,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164486547] [2022-01-10 00:26:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:56,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-01-10 00:26:56,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:56,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164486547] [2022-01-10 00:26:56,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164486547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:56,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:56,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:56,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961129819] [2022-01-10 00:26:56,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:56,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:56,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:56,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:56,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:56,928 INFO L87 Difference]: Start difference. First operand 52842 states and 57531 transitions. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:58,553 INFO L93 Difference]: Finished difference Result 108662 states and 118298 transitions. [2022-01-10 00:26:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:58,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 587 [2022-01-10 00:26:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:58,616 INFO L225 Difference]: With dead ends: 108662 [2022-01-10 00:26:58,616 INFO L226 Difference]: Without dead ends: 55397 [2022-01-10 00:26:58,647 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 00:26:58,647 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 453 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:58,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 651 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 00:26:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55397 states. [2022-01-10 00:26:59,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55397 to 51559. [2022-01-10 00:26:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51559 states, 51558 states have (on average 1.0857674851623413) internal successors, (55980), 51558 states have internal predecessors, (55980), 0 states have call successors, (0), 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 00:26:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51559 states to 51559 states and 55980 transitions. [2022-01-10 00:26:59,495 INFO L78 Accepts]: Start accepts. Automaton has 51559 states and 55980 transitions. Word has length 587 [2022-01-10 00:26:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:59,495 INFO L470 AbstractCegarLoop]: Abstraction has 51559 states and 55980 transitions. [2022-01-10 00:26:59,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 51559 states and 55980 transitions. [2022-01-10 00:26:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-01-10 00:26:59,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:59,513 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:59,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 00:26:59,513 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash 678088477, now seen corresponding path program 1 times [2022-01-10 00:26:59,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:59,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834500574] [2022-01-10 00:26:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:59,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:59,702 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-01-10 00:26:59,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:59,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834500574] [2022-01-10 00:26:59,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834500574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:59,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:59,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:59,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586185482] [2022-01-10 00:26:59,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:59,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:59,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:59,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:59,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:59,705 INFO L87 Difference]: Start difference. First operand 51559 states and 55980 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:27:01,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:27:01,325 INFO L93 Difference]: Finished difference Result 104388 states and 113357 transitions. [2022-01-10 00:27:01,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:27:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 625 [2022-01-10 00:27:01,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:27:01,386 INFO L225 Difference]: With dead ends: 104388 [2022-01-10 00:27:01,386 INFO L226 Difference]: Without dead ends: 52831 [2022-01-10 00:27:01,417 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 00:27:01,417 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 477 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:27:01,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 614 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:27:01,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52831 states. [2022-01-10 00:27:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52831 to 52828. [2022-01-10 00:27:02,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52828 states, 52827 states have (on average 1.0782175781323944) internal successors, (56959), 52827 states have internal predecessors, (56959), 0 states have call successors, (0), 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 00:27:02,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52828 states to 52828 states and 56959 transitions. [2022-01-10 00:27:02,072 INFO L78 Accepts]: Start accepts. Automaton has 52828 states and 56959 transitions. Word has length 625 [2022-01-10 00:27:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:27:02,073 INFO L470 AbstractCegarLoop]: Abstraction has 52828 states and 56959 transitions. [2022-01-10 00:27:02,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 00:27:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 52828 states and 56959 transitions. [2022-01-10 00:27:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-01-10 00:27:02,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:27:02,090 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:27:02,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 00:27:02,090 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:27:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:27:02,091 INFO L85 PathProgramCache]: Analyzing trace with hash 46869252, now seen corresponding path program 1 times [2022-01-10 00:27:02,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:27:02,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959784193] [2022-01-10 00:27:02,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:27:02,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:27:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:27:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 965 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-01-10 00:27:02,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:27:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959784193] [2022-01-10 00:27:02,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959784193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:27:02,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:27:02,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:27:02,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712450959] [2022-01-10 00:27:02,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:27:02,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:27:02,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:27:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:27:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:27:02,510 INFO L87 Difference]: Start difference. First operand 52828 states and 56959 transitions. Second operand has 4 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)