/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/Problem19_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:34:23,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:34:23,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:34:24,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:34:24,085 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 00:34:24,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:34:24,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:34:24,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:34:24,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:34:24,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:34:24,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:34:24,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:34:24,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:34:24,101 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:34:24,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:34:24,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:34:24,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:34:24,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:34:24,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:34:24,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:34:24,101 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:34:24,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:34:24,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:34:24,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:34:24,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:34:24,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:34:24,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:34:24,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:34:24,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:34:24,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:34:24,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:34:24,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:34:24,103 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:34:24,103 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:34:24,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:34:24,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:34:24,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:34:24,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:34:24,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:34:24,314 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:34:24,314 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:34:24,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label33.c [2022-01-10 00:34:24,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73328d2bc/009f7870379448fc98d51665819f4f68/FLAGbd5126842 [2022-01-10 00:34:25,046 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:34:25,048 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label33.c [2022-01-10 00:34:25,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73328d2bc/009f7870379448fc98d51665819f4f68/FLAGbd5126842 [2022-01-10 00:34:25,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73328d2bc/009f7870379448fc98d51665819f4f68 [2022-01-10 00:34:25,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:34:25,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:34:25,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:34:25,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:34:25,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:34:25,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:34:25" (1/1) ... [2022-01-10 00:34:25,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe0cbbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:25, skipping insertion in model container [2022-01-10 00:34:25,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:34:25" (1/1) ... [2022-01-10 00:34:25,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:34:25,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:34:25,727 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/Problem19_label33.c[5530,5543] [2022-01-10 00:34:26,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:34:26,578 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:34:26,600 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/Problem19_label33.c[5530,5543] [2022-01-10 00:34:27,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:34:27,100 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:34:27,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27 WrapperNode [2022-01-10 00:34:27,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:34:27,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:34:27,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:34:27,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:34:27,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:27,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:27,710 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-01-10 00:34:27,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:34:27,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:34:27,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:34:27,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:34:27,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:27,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:27,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:27,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:28,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:28,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:28,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:28,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:34:28,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:34:28,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:34:28,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:34:28,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (1/1) ... [2022-01-10 00:34:28,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:34:28,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:34:28,298 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 00:34:28,306 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 00:34:28,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:34:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:34:28,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:34:28,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:34:28,392 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:34:28,393 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:34:33,752 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:34:33,776 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:34:33,776 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:34:33,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:34:33 BoogieIcfgContainer [2022-01-10 00:34:33,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:34:33,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:34:33,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:34:33,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:34:33,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:34:25" (1/3) ... [2022-01-10 00:34:33,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af6cadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:34:33, skipping insertion in model container [2022-01-10 00:34:33,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:34:27" (2/3) ... [2022-01-10 00:34:33,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af6cadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:34:33, skipping insertion in model container [2022-01-10 00:34:33,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:34:33" (3/3) ... [2022-01-10 00:34:33,786 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label33.c [2022-01-10 00:34:33,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:34:33,790 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:34:33,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:34:33,841 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 00:34:33,841 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:34:33,874 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:33,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 00:34:33,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:33,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:34:33,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:33,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash 751578873, now seen corresponding path program 1 times [2022-01-10 00:34:33,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:33,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989209217] [2022-01-10 00:34:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:33,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:34,044 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 00:34:34,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:34,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989209217] [2022-01-10 00:34:34,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989209217] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:34,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:34,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:34:34,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474060131] [2022-01-10 00:34:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:34,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:34:34,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:34,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:34:34,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:34:34,078 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 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 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:39,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:39,821 INFO L93 Difference]: Finished difference Result 4919 states and 9313 transitions. [2022-01-10 00:34:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:34:39,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-01-10 00:34:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:39,931 INFO L225 Difference]: With dead ends: 4919 [2022-01-10 00:34:39,932 INFO L226 Difference]: Without dead ends: 3107 [2022-01-10 00:34:39,945 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 00:34:39,948 INFO L933 BasicCegarLoop]: 1276 mSDtfsCounter, 1512 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 1110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1110 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:39,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 1457 Invalid, 5748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1110 Valid, 4638 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-01-10 00:34:39,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-01-10 00:34:40,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3106. [2022-01-10 00:34:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 1.652818035426731) internal successors, (5132), 3105 states have internal predecessors, (5132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 5132 transitions. [2022-01-10 00:34:40,072 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 5132 transitions. Word has length 41 [2022-01-10 00:34:40,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:40,073 INFO L470 AbstractCegarLoop]: Abstraction has 3106 states and 5132 transitions. [2022-01-10 00:34:40,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 5132 transitions. [2022-01-10 00:34:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 00:34:40,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:40,077 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:34:40,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:34:40,078 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:40,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:40,079 INFO L85 PathProgramCache]: Analyzing trace with hash -174251006, now seen corresponding path program 1 times [2022-01-10 00:34:40,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:40,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820391151] [2022-01-10 00:34:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:40,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:34:40,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:40,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820391151] [2022-01-10 00:34:40,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820391151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:40,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:40,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:34:40,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806285562] [2022-01-10 00:34:40,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:40,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:34:40,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:40,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:34:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:34:40,235 INFO L87 Difference]: Start difference. First operand 3106 states and 5132 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:50,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:50,059 INFO L93 Difference]: Finished difference Result 10391 states and 16943 transitions. [2022-01-10 00:34:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:34:50,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-01-10 00:34:50,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:50,082 INFO L225 Difference]: With dead ends: 10391 [2022-01-10 00:34:50,083 INFO L226 Difference]: Without dead ends: 7287 [2022-01-10 00:34:50,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 00:34:50,090 INFO L933 BasicCegarLoop]: 1842 mSDtfsCounter, 4207 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 11122 mSolverCounterSat, 1406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 12528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1406 IncrementalHoareTripleChecker+Valid, 11122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:50,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4207 Valid, 2104 Invalid, 12528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1406 Valid, 11122 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-01-10 00:34:50,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7287 states. [2022-01-10 00:34:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7287 to 7236. [2022-01-10 00:34:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.5214927436074637) internal successors, (11008), 7235 states have internal predecessors, (11008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 11008 transitions. [2022-01-10 00:34:50,290 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 11008 transitions. Word has length 110 [2022-01-10 00:34:50,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:50,292 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 11008 transitions. [2022-01-10 00:34:50,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:50,293 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 11008 transitions. [2022-01-10 00:34:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-01-10 00:34:50,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:50,300 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:34:50,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:34:50,300 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1468214657, now seen corresponding path program 1 times [2022-01-10 00:34:50,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:50,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147685626] [2022-01-10 00:34:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:50,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:34:50,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:50,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147685626] [2022-01-10 00:34:50,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147685626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:50,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:50,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:34:50,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331570062] [2022-01-10 00:34:50,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:50,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:34:50,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:34:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:34:50,558 INFO L87 Difference]: Start difference. First operand 7236 states and 11008 transitions. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:34:56,542 INFO L93 Difference]: Finished difference Result 13136 states and 20668 transitions. [2022-01-10 00:34:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:34:56,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 276 [2022-01-10 00:34:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:34:56,562 INFO L225 Difference]: With dead ends: 13136 [2022-01-10 00:34:56,563 INFO L226 Difference]: Without dead ends: 7236 [2022-01-10 00:34:56,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:34:56,572 INFO L933 BasicCegarLoop]: 1767 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7319 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 7327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:34:56,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 2109 Invalid, 7327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7319 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-01-10 00:34:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7236 states. [2022-01-10 00:34:56,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7236 to 7236. [2022-01-10 00:34:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7236 states, 7235 states have (on average 1.5202487906012438) internal successors, (10999), 7235 states have internal predecessors, (10999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7236 states to 7236 states and 10999 transitions. [2022-01-10 00:34:56,686 INFO L78 Accepts]: Start accepts. Automaton has 7236 states and 10999 transitions. Word has length 276 [2022-01-10 00:34:56,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:34:56,687 INFO L470 AbstractCegarLoop]: Abstraction has 7236 states and 10999 transitions. [2022-01-10 00:34:56,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:34:56,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7236 states and 10999 transitions. [2022-01-10 00:34:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-01-10 00:34:56,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:34:56,693 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:34:56,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:34:56,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:34:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:34:56,695 INFO L85 PathProgramCache]: Analyzing trace with hash -857932984, now seen corresponding path program 1 times [2022-01-10 00:34:56,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:34:56,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215360421] [2022-01-10 00:34:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:34:56,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:34:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:34:56,969 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-10 00:34:56,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:34:56,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215360421] [2022-01-10 00:34:56,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215360421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:34:56,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:34:56,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:34:56,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391893524] [2022-01-10 00:34:56,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:34:56,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:34:56,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:34:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:34:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:34:56,973 INFO L87 Difference]: Start difference. First operand 7236 states and 10999 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:01,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:35:01,499 INFO L93 Difference]: Finished difference Result 15842 states and 24472 transitions. [2022-01-10 00:35:01,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:35:01,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 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 593 [2022-01-10 00:35:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:35:01,529 INFO L225 Difference]: With dead ends: 15842 [2022-01-10 00:35:01,529 INFO L226 Difference]: Without dead ends: 9973 [2022-01-10 00:35:01,537 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 00:35:01,537 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 1396 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3927 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 5598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 3927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:35:01,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1396 Valid, 754 Invalid, 5598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1671 Valid, 3927 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 00:35:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2022-01-10 00:35:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9969. [2022-01-10 00:35:01,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9969 states, 9968 states have (on average 1.3901484751203852) internal successors, (13857), 9968 states have internal predecessors, (13857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9969 states to 9969 states and 13857 transitions. [2022-01-10 00:35:01,681 INFO L78 Accepts]: Start accepts. Automaton has 9969 states and 13857 transitions. Word has length 593 [2022-01-10 00:35:01,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:35:01,682 INFO L470 AbstractCegarLoop]: Abstraction has 9969 states and 13857 transitions. [2022-01-10 00:35:01,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:01,683 INFO L276 IsEmpty]: Start isEmpty. Operand 9969 states and 13857 transitions. [2022-01-10 00:35:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 597 [2022-01-10 00:35:01,689 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:35:01,690 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:01,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:35:01,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:35:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:35:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -699340319, now seen corresponding path program 1 times [2022-01-10 00:35:01,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:35:01,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757925511] [2022-01-10 00:35:01,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:35:01,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:35:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:35:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-01-10 00:35:01,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:35:01,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757925511] [2022-01-10 00:35:01,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757925511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:35:01,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:35:01,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:35:01,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687486625] [2022-01-10 00:35:01,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:35:01,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:35:01,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:35:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:35:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:35:01,896 INFO L87 Difference]: Start difference. First operand 9969 states and 13857 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:07,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:35:07,652 INFO L93 Difference]: Finished difference Result 26933 states and 38507 transitions. [2022-01-10 00:35:07,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:35:07,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 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 596 [2022-01-10 00:35:07,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:35:07,688 INFO L225 Difference]: With dead ends: 26933 [2022-01-10 00:35:07,688 INFO L226 Difference]: Without dead ends: 18331 [2022-01-10 00:35:07,694 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 00:35:07,697 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 2119 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5113 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 5547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:35:07,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2119 Valid, 982 Invalid, 5547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5113 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-01-10 00:35:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18331 states. [2022-01-10 00:35:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18331 to 18329. [2022-01-10 00:35:07,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18329 states, 18328 states have (on average 1.378601047577477) internal successors, (25267), 18328 states have internal predecessors, (25267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18329 states to 18329 states and 25267 transitions. [2022-01-10 00:35:07,899 INFO L78 Accepts]: Start accepts. Automaton has 18329 states and 25267 transitions. Word has length 596 [2022-01-10 00:35:07,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:35:07,900 INFO L470 AbstractCegarLoop]: Abstraction has 18329 states and 25267 transitions. [2022-01-10 00:35:07,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:07,901 INFO L276 IsEmpty]: Start isEmpty. Operand 18329 states and 25267 transitions. [2022-01-10 00:35:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2022-01-10 00:35:07,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:35:07,908 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:07,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:35:07,908 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:35:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:35:07,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1610348306, now seen corresponding path program 1 times [2022-01-10 00:35:07,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:35:07,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573423242] [2022-01-10 00:35:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:35:07,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:35:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:35:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 77 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:35:08,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:35:08,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573423242] [2022-01-10 00:35:08,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573423242] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:35:08,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392411280] [2022-01-10 00:35:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:35:08,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:35:08,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:35:08,315 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 00:35:08,317 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 00:35:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:35:08,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 00:35:08,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:35:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-01-10 00:35:09,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:35:09,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392411280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:35:09,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:35:09,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-01-10 00:35:09,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224605332] [2022-01-10 00:35:09,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:35:09,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:35:09,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:35:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:35:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:35:09,172 INFO L87 Difference]: Start difference. First operand 18329 states and 25267 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:35:14,701 INFO L93 Difference]: Finished difference Result 51730 states and 72367 transitions. [2022-01-10 00:35:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:35:14,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 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 610 [2022-01-10 00:35:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:35:14,747 INFO L225 Difference]: With dead ends: 51730 [2022-01-10 00:35:14,747 INFO L226 Difference]: Without dead ends: 34768 [2022-01-10 00:35:14,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:35:14,761 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 1644 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 4151 mSolverCounterSat, 1854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 6005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1854 IncrementalHoareTripleChecker+Valid, 4151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:35:14,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 1266 Invalid, 6005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1854 Valid, 4151 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-01-10 00:35:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34768 states. [2022-01-10 00:35:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34768 to 34752. [2022-01-10 00:35:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34752 states, 34751 states have (on average 1.30773215159276) internal successors, (45445), 34751 states have internal predecessors, (45445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34752 states to 34752 states and 45445 transitions. [2022-01-10 00:35:15,112 INFO L78 Accepts]: Start accepts. Automaton has 34752 states and 45445 transitions. Word has length 610 [2022-01-10 00:35:15,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:35:15,113 INFO L470 AbstractCegarLoop]: Abstraction has 34752 states and 45445 transitions. [2022-01-10 00:35:15,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 34752 states and 45445 transitions. [2022-01-10 00:35:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2022-01-10 00:35:15,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:35:15,117 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:15,136 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 00:35:15,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-10 00:35:15,332 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:35:15,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:35:15,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1800574593, now seen corresponding path program 1 times [2022-01-10 00:35:15,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:35:15,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060692139] [2022-01-10 00:35:15,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:35:15,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:35:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:35:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-01-10 00:35:15,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:35:15,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060692139] [2022-01-10 00:35:15,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060692139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:35:15,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:35:15,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:35:15,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381142268] [2022-01-10 00:35:15,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:35:15,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:35:15,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:35:15,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:35:15,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:35:15,507 INFO L87 Difference]: Start difference. First operand 34752 states and 45445 transitions. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:21,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:35:21,128 INFO L93 Difference]: Finished difference Result 99743 states and 131207 transitions. [2022-01-10 00:35:21,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:35:21,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 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 616 [2022-01-10 00:35:21,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:35:21,228 INFO L225 Difference]: With dead ends: 99743 [2022-01-10 00:35:21,229 INFO L226 Difference]: Without dead ends: 66358 [2022-01-10 00:35:21,262 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 00:35:21,262 INFO L933 BasicCegarLoop]: 1704 mSDtfsCounter, 1357 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 4287 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:35:21,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 1971 Invalid, 5717 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1430 Valid, 4287 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-01-10 00:35:21,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66358 states. [2022-01-10 00:35:21,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66358 to 62245. [2022-01-10 00:35:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62245 states, 62244 states have (on average 1.2111046847888953) internal successors, (75384), 62244 states have internal predecessors, (75384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62245 states to 62245 states and 75384 transitions. [2022-01-10 00:35:21,907 INFO L78 Accepts]: Start accepts. Automaton has 62245 states and 75384 transitions. Word has length 616 [2022-01-10 00:35:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:35:21,907 INFO L470 AbstractCegarLoop]: Abstraction has 62245 states and 75384 transitions. [2022-01-10 00:35:21,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 2 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:35:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 62245 states and 75384 transitions. [2022-01-10 00:35:21,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2022-01-10 00:35:21,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:35:21,915 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:35:21,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:35:21,915 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:35:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:35:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash -449274151, now seen corresponding path program 1 times [2022-01-10 00:35:21,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:35:21,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453281609] [2022-01-10 00:35:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:35:21,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:35:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:35:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-01-10 00:35:22,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:35:22,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453281609] [2022-01-10 00:35:22,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453281609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:35:22,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:35:22,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:35:22,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785278048] [2022-01-10 00:35:22,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:35:22,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:35:22,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:35:22,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:35:22,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:35:22,474 INFO L87 Difference]: Start difference. First operand 62245 states and 75384 transitions. Second operand has 3 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)