/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_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:25:58,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:25:58,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:25:58,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:25:58,773 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 00:25:58,803 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:25:58,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:25:58,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:25:58,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:25:58,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:25:58,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:25:58,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:25:58,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:25:58,805 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:25:58,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:25:58,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:25:58,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:25:58,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:25:58,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:25:58,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:25:58,807 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:25:58,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:25:58,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:25:58,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:25:58,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:25:58,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:25:58,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:25:58,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:25:58,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:25:58,808 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:25:58,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:25:58,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:25:58,808 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:25:58,808 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:25:58,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:25:58,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:25:59,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:25:59,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:25:59,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:25:59,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:25:59,066 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:25:59,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label42.c [2022-01-10 00:25:59,125 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665d83105/10fecfd0d87647d18fe8b91a4369e1d3/FLAG75d040652 [2022-01-10 00:25:59,718 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:25:59,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label42.c [2022-01-10 00:25:59,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665d83105/10fecfd0d87647d18fe8b91a4369e1d3/FLAG75d040652 [2022-01-10 00:25:59,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665d83105/10fecfd0d87647d18fe8b91a4369e1d3 [2022-01-10 00:25:59,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:25:59,906 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:25:59,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:25:59,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:25:59,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:25:59,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:25:59" (1/1) ... [2022-01-10 00:25:59,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77308b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:59, skipping insertion in model container [2022-01-10 00:25:59,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:25:59" (1/1) ... [2022-01-10 00:25:59,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:25:59,995 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:26:00,194 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_label42.c[6070,6083] [2022-01-10 00:26:00,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:26:00,750 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:26:00,780 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_label42.c[6070,6083] [2022-01-10 00:26:01,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:26:01,155 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:26:01,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01 WrapperNode [2022-01-10 00:26:01,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:26:01,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:26:01,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:26:01,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:26:01,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,494 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:26:01,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:26:01,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:26:01,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:26:01,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:26:01,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:26:01,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:26:01,808 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:26:01,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:26:01,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (1/1) ... [2022-01-10 00:26:01,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:26:01,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:26:01,835 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 00:26:01,837 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 00:26:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:26:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:26:01,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:26:01,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:26:01,919 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:26:01,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:26:04,746 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:26:04,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:26:04,766 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:26:04,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:26:04 BoogieIcfgContainer [2022-01-10 00:26:04,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:26:04,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:26:04,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:26:04,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:26:04,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:25:59" (1/3) ... [2022-01-10 00:26:04,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1534b48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:26:04, skipping insertion in model container [2022-01-10 00:26:04,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:26:01" (2/3) ... [2022-01-10 00:26:04,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1534b48e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:26:04, skipping insertion in model container [2022-01-10 00:26:04,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:26:04" (3/3) ... [2022-01-10 00:26:04,776 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label42.c [2022-01-10 00:26:04,780 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:26:04,780 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:26:04,822 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:26:04,828 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 00:26:04,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:26:04,849 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 00:26:04,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 00:26:04,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:04,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:04,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:04,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:04,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2102454322, now seen corresponding path program 1 times [2022-01-10 00:26:04,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:04,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872336486] [2022-01-10 00:26:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:04,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:05,077 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 00:26:05,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:05,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872336486] [2022-01-10 00:26:05,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872336486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:05,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:05,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:05,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304980338] [2022-01-10 00:26:05,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:05,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:05,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:05,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:05,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:05,120 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 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 00:26:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:07,882 INFO L93 Difference]: Finished difference Result 1667 states and 3061 transitions. [2022-01-10 00:26:07,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:07,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 00:26:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:07,901 INFO L225 Difference]: With dead ends: 1667 [2022-01-10 00:26:07,901 INFO L226 Difference]: Without dead ends: 998 [2022-01-10 00:26:07,905 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 00:26:07,908 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 505 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:07,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 276 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-10 00:26:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-01-10 00:26:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 982. [2022-01-10 00:26:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 981 states have (on average 1.707441386340469) internal successors, (1675), 981 states have internal predecessors, (1675), 0 states have call successors, (0), 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 00:26:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1675 transitions. [2022-01-10 00:26:07,994 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1675 transitions. Word has length 40 [2022-01-10 00:26:07,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:07,994 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 1675 transitions. [2022-01-10 00:26:07,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 00:26:07,995 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1675 transitions. [2022-01-10 00:26:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 00:26:07,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:07,998 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 00:26:07,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:26:07,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:07,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash 48341583, now seen corresponding path program 1 times [2022-01-10 00:26:07,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:07,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941952940] [2022-01-10 00:26:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:08,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:08,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:08,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941952940] [2022-01-10 00:26:08,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941952940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:08,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:08,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:08,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560438513] [2022-01-10 00:26:08,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:08,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:08,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:08,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:08,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:08,121 INFO L87 Difference]: Start difference. First operand 982 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:10,329 INFO L93 Difference]: Finished difference Result 2841 states and 4881 transitions. [2022-01-10 00:26:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:10,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-01-10 00:26:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:10,337 INFO L225 Difference]: With dead ends: 2841 [2022-01-10 00:26:10,337 INFO L226 Difference]: Without dead ends: 1861 [2022-01-10 00:26:10,339 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 00:26:10,340 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 407 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:10,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 496 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:26:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2022-01-10 00:26:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1857. [2022-01-10 00:26:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 1.4547413793103448) internal successors, (2700), 1856 states have internal predecessors, (2700), 0 states have call successors, (0), 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 00:26:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 2700 transitions. [2022-01-10 00:26:10,392 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 2700 transitions. Word has length 105 [2022-01-10 00:26:10,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:10,394 INFO L470 AbstractCegarLoop]: Abstraction has 1857 states and 2700 transitions. [2022-01-10 00:26:10,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:26:10,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 2700 transitions. [2022-01-10 00:26:10,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 00:26:10,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:10,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:10,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:26:10,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1523238332, now seen corresponding path program 1 times [2022-01-10 00:26:10,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:10,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493629971] [2022-01-10 00:26:10,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:10,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:10,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:10,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493629971] [2022-01-10 00:26:10,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493629971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:10,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:10,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:10,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235274801] [2022-01-10 00:26:10,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:10,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:10,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:10,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:10,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:10,611 INFO L87 Difference]: Start difference. First operand 1857 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 00:26:12,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:12,944 INFO L93 Difference]: Finished difference Result 4591 states and 6640 transitions. [2022-01-10 00:26:12,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:12,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2022-01-10 00:26:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:12,956 INFO L225 Difference]: With dead ends: 4591 [2022-01-10 00:26:12,956 INFO L226 Difference]: Without dead ends: 2736 [2022-01-10 00:26:12,959 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 00:26:12,961 INFO L933 BasicCegarLoop]: 475 mSDtfsCounter, 352 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:12,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 537 Invalid, 1763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-10 00:26:12,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2736 states. [2022-01-10 00:26:13,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2736 to 2716. [2022-01-10 00:26:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.390791896869245) internal successors, (3776), 2715 states have internal predecessors, (3776), 0 states have call successors, (0), 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 00:26:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3776 transitions. [2022-01-10 00:26:13,013 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3776 transitions. Word has length 145 [2022-01-10 00:26:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:13,014 INFO L470 AbstractCegarLoop]: Abstraction has 2716 states and 3776 transitions. [2022-01-10 00:26:13,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 00:26:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3776 transitions. [2022-01-10 00:26:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 00:26:13,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:13,017 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:13,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:26:13,018 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:13,018 INFO L85 PathProgramCache]: Analyzing trace with hash 652145173, now seen corresponding path program 1 times [2022-01-10 00:26:13,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:13,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431166648] [2022-01-10 00:26:13,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:13,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:13,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:13,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431166648] [2022-01-10 00:26:13,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431166648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:13,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:13,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:26:13,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949785723] [2022-01-10 00:26:13,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:13,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:13,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:13,176 INFO L87 Difference]: Start difference. First operand 2716 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 00:26:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:14,978 INFO L93 Difference]: Finished difference Result 6709 states and 9429 transitions. [2022-01-10 00:26:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:14,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2022-01-10 00:26:14,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:14,992 INFO L225 Difference]: With dead ends: 6709 [2022-01-10 00:26:14,993 INFO L226 Difference]: Without dead ends: 3995 [2022-01-10 00:26:14,997 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 00:26:14,999 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 347 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 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, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:14,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:26:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2022-01-10 00:26:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3142. [2022-01-10 00:26:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3142 states, 3141 states have (on average 1.274434893346068) internal successors, (4003), 3141 states have internal predecessors, (4003), 0 states have call successors, (0), 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 00:26:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3142 states to 3142 states and 4003 transitions. [2022-01-10 00:26:15,062 INFO L78 Accepts]: Start accepts. Automaton has 3142 states and 4003 transitions. Word has length 151 [2022-01-10 00:26:15,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:15,063 INFO L470 AbstractCegarLoop]: Abstraction has 3142 states and 4003 transitions. [2022-01-10 00:26:15,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 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 00:26:15,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3142 states and 4003 transitions. [2022-01-10 00:26:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-10 00:26:15,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:15,065 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 00:26:15,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:26:15,066 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:15,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:15,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1757277791, now seen corresponding path program 1 times [2022-01-10 00:26:15,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:15,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195324994] [2022-01-10 00:26:15,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:15,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:15,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195324994] [2022-01-10 00:26:15,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195324994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:15,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:15,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 00:26:15,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315153266] [2022-01-10 00:26:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:15,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 00:26:15,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:15,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 00:26:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:26:15,214 INFO L87 Difference]: Start difference. First operand 3142 states and 4003 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 00:26:17,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:17,722 INFO L93 Difference]: Finished difference Result 8019 states and 10522 transitions. [2022-01-10 00:26:17,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:26:17,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2022-01-10 00:26:17,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:17,741 INFO L225 Difference]: With dead ends: 8019 [2022-01-10 00:26:17,741 INFO L226 Difference]: Without dead ends: 4879 [2022-01-10 00:26:17,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 00:26:17,747 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 1096 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:17,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 881 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [813 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-10 00:26:17,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2022-01-10 00:26:17,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 4852. [2022-01-10 00:26:17,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 1.2665429808286952) internal successors, (6144), 4851 states have internal predecessors, (6144), 0 states have call successors, (0), 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 00:26:17,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6144 transitions. [2022-01-10 00:26:17,829 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6144 transitions. Word has length 188 [2022-01-10 00:26:17,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:17,830 INFO L470 AbstractCegarLoop]: Abstraction has 4852 states and 6144 transitions. [2022-01-10 00:26:17,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 00:26:17,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6144 transitions. [2022-01-10 00:26:17,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-01-10 00:26:17,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:17,832 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:17,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:26:17,833 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:17,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:17,833 INFO L85 PathProgramCache]: Analyzing trace with hash -260014896, now seen corresponding path program 1 times [2022-01-10 00:26:17,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:17,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852930226] [2022-01-10 00:26:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:17,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:26:17,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:17,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852930226] [2022-01-10 00:26:17,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852930226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:17,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:17,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:17,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974186353] [2022-01-10 00:26:17,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:17,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:17,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:17,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:17,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:17,959 INFO L87 Difference]: Start difference. First operand 4852 states and 6144 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 00:26:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:20,055 INFO L93 Difference]: Finished difference Result 12249 states and 15825 transitions. [2022-01-10 00:26:20,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:20,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 194 [2022-01-10 00:26:20,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:20,079 INFO L225 Difference]: With dead ends: 12249 [2022-01-10 00:26:20,079 INFO L226 Difference]: Without dead ends: 7399 [2022-01-10 00:26:20,085 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 00:26:20,086 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 408 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:20,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 545 Invalid, 1695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:26:20,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2022-01-10 00:26:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4826. [2022-01-10 00:26:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4825 states have (on average 1.2652849740932643) internal successors, (6105), 4825 states have internal predecessors, (6105), 0 states have call successors, (0), 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 00:26:20,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 6105 transitions. [2022-01-10 00:26:20,184 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 6105 transitions. Word has length 194 [2022-01-10 00:26:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:20,185 INFO L470 AbstractCegarLoop]: Abstraction has 4826 states and 6105 transitions. [2022-01-10 00:26:20,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 00:26:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 6105 transitions. [2022-01-10 00:26:20,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-01-10 00:26:20,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:20,187 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:20,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:26:20,188 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:20,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:20,188 INFO L85 PathProgramCache]: Analyzing trace with hash -546786268, now seen corresponding path program 1 times [2022-01-10 00:26:20,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:20,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387172964] [2022-01-10 00:26:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:20,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:20,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:20,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387172964] [2022-01-10 00:26:20,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387172964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:20,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:20,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:20,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572690334] [2022-01-10 00:26:20,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:20,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:20,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:20,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:20,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:20,338 INFO L87 Difference]: Start difference. First operand 4826 states and 6105 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 00:26:22,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:22,328 INFO L93 Difference]: Finished difference Result 13930 states and 17666 transitions. [2022-01-10 00:26:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:22,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2022-01-10 00:26:22,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:22,350 INFO L225 Difference]: With dead ends: 13930 [2022-01-10 00:26:22,351 INFO L226 Difference]: Without dead ends: 7828 [2022-01-10 00:26:22,357 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 00:26:22,358 INFO L933 BasicCegarLoop]: 878 mSDtfsCounter, 418 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:22,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 953 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:26:22,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2022-01-10 00:26:22,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 7822. [2022-01-10 00:26:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7822 states, 7821 states have (on average 1.1792609640710907) internal successors, (9223), 7821 states have internal predecessors, (9223), 0 states have call successors, (0), 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 00:26:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7822 states to 7822 states and 9223 transitions. [2022-01-10 00:26:22,464 INFO L78 Accepts]: Start accepts. Automaton has 7822 states and 9223 transitions. Word has length 207 [2022-01-10 00:26:22,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:22,464 INFO L470 AbstractCegarLoop]: Abstraction has 7822 states and 9223 transitions. [2022-01-10 00:26:22,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 00:26:22,464 INFO L276 IsEmpty]: Start isEmpty. Operand 7822 states and 9223 transitions. [2022-01-10 00:26:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-10 00:26:22,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:22,468 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:26:22,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:26:22,468 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:22,469 INFO L85 PathProgramCache]: Analyzing trace with hash -304170090, now seen corresponding path program 1 times [2022-01-10 00:26:22,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:22,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996646723] [2022-01-10 00:26:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:22,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:22,622 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 75 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:22,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:22,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996646723] [2022-01-10 00:26:22,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996646723] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:26:22,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376367432] [2022-01-10 00:26:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:22,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:26:22,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:26:22,630 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 00:26:22,634 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 00:26:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:22,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:26:22,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:26:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 75 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:23,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:26:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:26:24,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376367432] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:26:24,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:26:24,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-01-10 00:26:24,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987902209] [2022-01-10 00:26:24,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:24,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:26:24,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:24,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:26:24,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:26:24,117 INFO L87 Difference]: Start difference. First operand 7822 states and 9223 transitions. Second operand has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 00:26:27,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:27,212 INFO L93 Difference]: Finished difference Result 26748 states and 31821 transitions. [2022-01-10 00:26:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:26:27,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 260 [2022-01-10 00:26:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:27,252 INFO L225 Difference]: With dead ends: 26748 [2022-01-10 00:26:27,252 INFO L226 Difference]: Without dead ends: 18497 [2022-01-10 00:26:27,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 515 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 00:26:27,265 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 1008 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 2218 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 2218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:27,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 147 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 2218 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:26:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18497 states. [2022-01-10 00:26:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18497 to 18495. [2022-01-10 00:26:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18495 states, 18494 states have (on average 1.161187412133665) internal successors, (21475), 18494 states have internal predecessors, (21475), 0 states have call successors, (0), 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 00:26:27,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18495 states to 18495 states and 21475 transitions. [2022-01-10 00:26:27,517 INFO L78 Accepts]: Start accepts. Automaton has 18495 states and 21475 transitions. Word has length 260 [2022-01-10 00:26:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:27,518 INFO L470 AbstractCegarLoop]: Abstraction has 18495 states and 21475 transitions. [2022-01-10 00:26:27,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.0) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 00:26:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 18495 states and 21475 transitions. [2022-01-10 00:26:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-01-10 00:26:27,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:27,528 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:27,555 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 00:26:27,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:26:27,748 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:27,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:27,748 INFO L85 PathProgramCache]: Analyzing trace with hash 701515888, now seen corresponding path program 1 times [2022-01-10 00:26:27,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:27,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189659929] [2022-01-10 00:26:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:27,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 00:26:27,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:27,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189659929] [2022-01-10 00:26:27,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189659929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:27,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:27,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:27,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974652095] [2022-01-10 00:26:27,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:27,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:27,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:27,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:27,922 INFO L87 Difference]: Start difference. First operand 18495 states and 21475 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 00:26:29,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:29,607 INFO L93 Difference]: Finished difference Result 40390 states and 46980 transitions. [2022-01-10 00:26:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:29,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 277 [2022-01-10 00:26:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:29,648 INFO L225 Difference]: With dead ends: 40390 [2022-01-10 00:26:29,648 INFO L226 Difference]: Without dead ends: 21471 [2022-01-10 00:26:29,667 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 00:26:29,670 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 384 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:29,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 844 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:26:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21471 states. [2022-01-10 00:26:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21471 to 21471. [2022-01-10 00:26:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21471 states, 21470 states have (on average 1.1432231020027945) internal successors, (24545), 21470 states have internal predecessors, (24545), 0 states have call successors, (0), 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 00:26:29,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21471 states to 21471 states and 24545 transitions. [2022-01-10 00:26:29,928 INFO L78 Accepts]: Start accepts. Automaton has 21471 states and 24545 transitions. Word has length 277 [2022-01-10 00:26:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:29,929 INFO L470 AbstractCegarLoop]: Abstraction has 21471 states and 24545 transitions. [2022-01-10 00:26:29,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 00:26:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 21471 states and 24545 transitions. [2022-01-10 00:26:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-01-10 00:26:29,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:29,934 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 00:26:29,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:26:29,935 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:29,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:29,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1295125674, now seen corresponding path program 1 times [2022-01-10 00:26:29,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:29,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898114870] [2022-01-10 00:26:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:29,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:30,071 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-01-10 00:26:30,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:30,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898114870] [2022-01-10 00:26:30,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898114870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:30,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:30,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:30,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228865792] [2022-01-10 00:26:30,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:30,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:30,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:30,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:30,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:30,073 INFO L87 Difference]: Start difference. First operand 21471 states and 24545 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 00:26:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:31,931 INFO L93 Difference]: Finished difference Result 52349 states and 59968 transitions. [2022-01-10 00:26:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 312 [2022-01-10 00:26:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:31,977 INFO L225 Difference]: With dead ends: 52349 [2022-01-10 00:26:31,977 INFO L226 Difference]: Without dead ends: 30452 [2022-01-10 00:26:31,999 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 00:26:31,999 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 460 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:31,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 327 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:26:32,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30452 states. [2022-01-10 00:26:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30452 to 21468. [2022-01-10 00:26:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21468 states, 21467 states have (on average 1.1420785391531187) internal successors, (24517), 21467 states have internal predecessors, (24517), 0 states have call successors, (0), 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 00:26:32,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21468 states to 21468 states and 24517 transitions. [2022-01-10 00:26:32,274 INFO L78 Accepts]: Start accepts. Automaton has 21468 states and 24517 transitions. Word has length 312 [2022-01-10 00:26:32,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:32,275 INFO L470 AbstractCegarLoop]: Abstraction has 21468 states and 24517 transitions. [2022-01-10 00:26:32,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 00:26:32,275 INFO L276 IsEmpty]: Start isEmpty. Operand 21468 states and 24517 transitions. [2022-01-10 00:26:32,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2022-01-10 00:26:32,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:32,280 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 00:26:32,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:26:32,280 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:32,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1545961588, now seen corresponding path program 1 times [2022-01-10 00:26:32,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:32,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691040987] [2022-01-10 00:26:32,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:32,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 269 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-10 00:26:32,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:32,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691040987] [2022-01-10 00:26:32,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691040987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:32,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:32,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:32,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145492537] [2022-01-10 00:26:32,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:32,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:32,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:32,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:32,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:32,413 INFO L87 Difference]: Start difference. First operand 21468 states and 24517 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 00:26:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:34,535 INFO L93 Difference]: Finished difference Result 51042 states and 58361 transitions. [2022-01-10 00:26:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:34,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 334 [2022-01-10 00:26:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:34,584 INFO L225 Difference]: With dead ends: 51042 [2022-01-10 00:26:34,584 INFO L226 Difference]: Without dead ends: 29576 [2022-01-10 00:26:34,607 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 00:26:34,608 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 326 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:34,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 843 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:26:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29576 states. [2022-01-10 00:26:35,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29576 to 27853. [2022-01-10 00:26:35,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27853 states, 27852 states have (on average 1.128823782852219) internal successors, (31440), 27852 states have internal predecessors, (31440), 0 states have call successors, (0), 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 00:26:35,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27853 states to 27853 states and 31440 transitions. [2022-01-10 00:26:35,073 INFO L78 Accepts]: Start accepts. Automaton has 27853 states and 31440 transitions. Word has length 334 [2022-01-10 00:26:35,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:35,073 INFO L470 AbstractCegarLoop]: Abstraction has 27853 states and 31440 transitions. [2022-01-10 00:26:35,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 00:26:35,074 INFO L276 IsEmpty]: Start isEmpty. Operand 27853 states and 31440 transitions. [2022-01-10 00:26:35,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-01-10 00:26:35,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:35,079 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:35,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:26:35,079 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:35,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1618781094, now seen corresponding path program 1 times [2022-01-10 00:26:35,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:35,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672520357] [2022-01-10 00:26:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:35,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 355 proven. 73 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-01-10 00:26:35,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:35,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672520357] [2022-01-10 00:26:35,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672520357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:26:35,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28097513] [2022-01-10 00:26:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:35,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:26:35,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:26:35,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:26:35,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:26:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:35,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:26:35,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:26:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 355 proven. 73 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-01-10 00:26:36,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:26:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 574 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-01-10 00:26:36,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28097513] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:26:36,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:26:36,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-01-10 00:26:36,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548098851] [2022-01-10 00:26:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:36,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:26:36,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:26:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:26:36,893 INFO L87 Difference]: Start difference. First operand 27853 states and 31440 transitions. Second operand has 4 states, 4 states have (on average 58.0) 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 00:26:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:39,971 INFO L93 Difference]: Finished difference Result 68931 states and 77945 transitions. [2022-01-10 00:26:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:26:39,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) 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 338 [2022-01-10 00:26:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:40,022 INFO L225 Difference]: With dead ends: 68931 [2022-01-10 00:26:40,022 INFO L226 Difference]: Without dead ends: 40653 [2022-01-10 00:26:40,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 671 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 00:26:40,048 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 901 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:40,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 189 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 00:26:40,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40653 states. [2022-01-10 00:26:40,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40653 to 38524. [2022-01-10 00:26:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38524 states, 38523 states have (on average 1.1351400462061625) internal successors, (43729), 38523 states have internal predecessors, (43729), 0 states have call successors, (0), 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 00:26:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38524 states to 38524 states and 43729 transitions. [2022-01-10 00:26:40,540 INFO L78 Accepts]: Start accepts. Automaton has 38524 states and 43729 transitions. Word has length 338 [2022-01-10 00:26:40,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:40,541 INFO L470 AbstractCegarLoop]: Abstraction has 38524 states and 43729 transitions. [2022-01-10 00:26:40,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) 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 00:26:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 38524 states and 43729 transitions. [2022-01-10 00:26:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-01-10 00:26:40,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:40,545 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 00:26:40,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:26:40,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-10 00:26:40,770 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:40,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:40,770 INFO L85 PathProgramCache]: Analyzing trace with hash 977737213, now seen corresponding path program 1 times [2022-01-10 00:26:40,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:40,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367160728] [2022-01-10 00:26:40,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:40,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:40,896 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-01-10 00:26:40,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:40,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367160728] [2022-01-10 00:26:40,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367160728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:40,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:40,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:40,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371026635] [2022-01-10 00:26:40,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:40,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:40,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:40,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:40,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:40,898 INFO L87 Difference]: Start difference. First operand 38524 states and 43729 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 00:26:42,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:42,812 INFO L93 Difference]: Finished difference Result 82167 states and 93323 transitions. [2022-01-10 00:26:42,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:42,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 352 [2022-01-10 00:26:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:42,856 INFO L225 Difference]: With dead ends: 82167 [2022-01-10 00:26:42,856 INFO L226 Difference]: Without dead ends: 43214 [2022-01-10 00:26:42,878 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 00:26:42,879 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 436 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:42,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 835 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:26:42,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43214 states. [2022-01-10 00:26:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43214 to 41082. [2022-01-10 00:26:43,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41082 states, 41081 states have (on average 1.1328107884423455) internal successors, (46537), 41081 states have internal predecessors, (46537), 0 states have call successors, (0), 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 00:26:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41082 states to 41082 states and 46537 transitions. [2022-01-10 00:26:43,458 INFO L78 Accepts]: Start accepts. Automaton has 41082 states and 46537 transitions. Word has length 352 [2022-01-10 00:26:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:43,460 INFO L470 AbstractCegarLoop]: Abstraction has 41082 states and 46537 transitions. [2022-01-10 00:26:43,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 00:26:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand 41082 states and 46537 transitions. [2022-01-10 00:26:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-01-10 00:26:43,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:43,476 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 00:26:43,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:26:43,476 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:43,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1634611038, now seen corresponding path program 1 times [2022-01-10 00:26:43,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:43,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940208863] [2022-01-10 00:26:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:43,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-01-10 00:26:43,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:43,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940208863] [2022-01-10 00:26:43,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940208863] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:43,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:43,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:43,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962720535] [2022-01-10 00:26:43,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:43,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:43,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:43,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:43,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:43,688 INFO L87 Difference]: Start difference. First operand 41082 states and 46537 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 00:26:45,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:45,488 INFO L93 Difference]: Finished difference Result 86418 states and 98040 transitions. [2022-01-10 00:26:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:45,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 383 [2022-01-10 00:26:45,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:45,551 INFO L225 Difference]: With dead ends: 86418 [2022-01-10 00:26:45,552 INFO L226 Difference]: Without dead ends: 44913 [2022-01-10 00:26:45,578 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 00:26:45,579 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 401 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:45,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 880 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:26:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44913 states. [2022-01-10 00:26:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44913 to 44911. [2022-01-10 00:26:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44911 states, 44910 states have (on average 1.1258517034068136) internal successors, (50562), 44910 states have internal predecessors, (50562), 0 states have call successors, (0), 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 00:26:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44911 states to 44911 states and 50562 transitions. [2022-01-10 00:26:46,248 INFO L78 Accepts]: Start accepts. Automaton has 44911 states and 50562 transitions. Word has length 383 [2022-01-10 00:26:46,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:46,248 INFO L470 AbstractCegarLoop]: Abstraction has 44911 states and 50562 transitions. [2022-01-10 00:26:46,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 00:26:46,248 INFO L276 IsEmpty]: Start isEmpty. Operand 44911 states and 50562 transitions. [2022-01-10 00:26:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-01-10 00:26:46,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:46,255 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:26:46,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 00:26:46,256 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2065719755, now seen corresponding path program 1 times [2022-01-10 00:26:46,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143832646] [2022-01-10 00:26:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:46,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-01-10 00:26:46,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:46,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143832646] [2022-01-10 00:26:46,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143832646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:46,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:46,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:46,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630319652] [2022-01-10 00:26:46,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:46,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:46,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:46,474 INFO L87 Difference]: Start difference. First operand 44911 states and 50562 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 00:26:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:48,539 INFO L93 Difference]: Finished difference Result 100497 states and 112916 transitions. [2022-01-10 00:26:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:48,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 422 [2022-01-10 00:26:48,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:48,624 INFO L225 Difference]: With dead ends: 100497 [2022-01-10 00:26:48,625 INFO L226 Difference]: Without dead ends: 55159 [2022-01-10 00:26:48,647 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 00:26:48,648 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 488 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:48,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 194 Invalid, 1579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:26:48,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55159 states. [2022-01-10 00:26:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55159 to 53853. [2022-01-10 00:26:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53853 states, 53852 states have (on average 1.121741068112605) internal successors, (60408), 53852 states have internal predecessors, (60408), 0 states have call successors, (0), 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 00:26:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53853 states to 53853 states and 60408 transitions. [2022-01-10 00:26:49,404 INFO L78 Accepts]: Start accepts. Automaton has 53853 states and 60408 transitions. Word has length 422 [2022-01-10 00:26:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:26:49,404 INFO L470 AbstractCegarLoop]: Abstraction has 53853 states and 60408 transitions. [2022-01-10 00:26:49,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 00:26:49,404 INFO L276 IsEmpty]: Start isEmpty. Operand 53853 states and 60408 transitions. [2022-01-10 00:26:49,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-01-10 00:26:49,410 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:26:49,411 INFO L514 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:26:49,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:26:49,411 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:26:49,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:26:49,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1496360823, now seen corresponding path program 1 times [2022-01-10 00:26:49,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:26:49,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111440373] [2022-01-10 00:26:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:26:49,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:26:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:26:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-01-10 00:26:49,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:26:49,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111440373] [2022-01-10 00:26:49,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111440373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:26:49,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:26:49,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:26:49,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056391376] [2022-01-10 00:26:49,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:26:49,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:26:49,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:26:49,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:26:49,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:26:49,570 INFO L87 Difference]: Start difference. First operand 53853 states and 60408 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 00:26:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:26:51,718 INFO L93 Difference]: Finished difference Result 125158 states and 140434 transitions. [2022-01-10 00:26:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:26:51,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 440 [2022-01-10 00:26:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:26:51,950 INFO L225 Difference]: With dead ends: 125158 [2022-01-10 00:26:51,951 INFO L226 Difference]: Without dead ends: 67464 [2022-01-10 00:26:51,962 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 00:26:51,964 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 446 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:26:51,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 657 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:26:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67464 states. [2022-01-10 00:26:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67464 to 62342. [2022-01-10 00:26:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62342 states, 62341 states have (on average 1.1151088368810254) internal successors, (69517), 62341 states have internal predecessors, (69517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)