/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/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:19:28,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:19:28,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:19:29,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:19:29,094 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 02:19:29,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:19:29,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:19:29,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:19:29,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:19:29,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:19:29,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:19:29,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:19:29,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:19:29,118 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:19:29,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:19:29,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:19:29,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:19:29,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:19:29,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:19:29,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:19:29,119 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:19:29,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:19:29,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:19:29,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:19:29,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:19:29,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:19:29,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:19:29,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:19:29,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:19:29,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:19:29,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:19:29,366 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:19:29,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-01-10 02:19:29,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6909b9b4e/e8f00b4a6b384f28899e85bc01bb32aa/FLAGb09b92750 [2022-01-10 02:19:30,121 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:19:30,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-01-10 02:19:30,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6909b9b4e/e8f00b4a6b384f28899e85bc01bb32aa/FLAGb09b92750 [2022-01-10 02:19:30,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6909b9b4e/e8f00b4a6b384f28899e85bc01bb32aa [2022-01-10 02:19:30,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:19:30,451 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:19:30,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:19:30,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:19:30,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:19:30,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:19:30" (1/1) ... [2022-01-10 02:19:30,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d10cfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:30, skipping insertion in model container [2022-01-10 02:19:30,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:19:30" (1/1) ... [2022-01-10 02:19:30,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:19:30,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:19:30,807 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c[8712,8725] [2022-01-10 02:19:30,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c[11529,11542] [2022-01-10 02:19:31,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:19:31,325 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:19:31,354 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c[8712,8725] [2022-01-10 02:19:31,357 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c[11529,11542] [2022-01-10 02:19:31,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:19:31,709 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:19:31,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31 WrapperNode [2022-01-10 02:19:31,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:19:31,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:19:31,711 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:19:31,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:19:31,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:31,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,168 INFO L137 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5031 [2022-01-10 02:19:32,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:19:32,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:19:32,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:19:32,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:19:32,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:19:32,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:19:32,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:19:32,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:19:32,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (1/1) ... [2022-01-10 02:19:32,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:19:32,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:19:32,481 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 02:19:32,483 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 02:19:32,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:19:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:19:32,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:19:32,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:19:32,643 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:19:32,644 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:19:35,398 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:19:35,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:19:35,409 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 02:19:35,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:19:35 BoogieIcfgContainer [2022-01-10 02:19:35,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:19:35,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:19:35,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:19:35,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:19:35,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:19:30" (1/3) ... [2022-01-10 02:19:35,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a308c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:19:35, skipping insertion in model container [2022-01-10 02:19:35,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:19:31" (2/3) ... [2022-01-10 02:19:35,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a308c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:19:35, skipping insertion in model container [2022-01-10 02:19:35,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:19:35" (3/3) ... [2022-01-10 02:19:35,417 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label06.c [2022-01-10 02:19:35,420 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:19:35,420 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:19:35,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:19:35,454 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 02:19:35,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:19:35,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 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 02:19:35,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 02:19:35,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:35,477 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] [2022-01-10 02:19:35,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:35,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2077296107, now seen corresponding path program 1 times [2022-01-10 02:19:35,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:35,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458673329] [2022-01-10 02:19:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:35,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:35,609 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 02:19:35,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:35,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458673329] [2022-01-10 02:19:35,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458673329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:35,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:35,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 02:19:35,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130057906] [2022-01-10 02:19:35,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:35,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:35,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:35,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:35,633 INFO L87 Difference]: Start difference. First operand has 895 states, 892 states have (on average 1.9013452914798206) internal successors, (1696), 894 states have internal predecessors, (1696), 0 states have call successors, (0), 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 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 02:19:38,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:38,560 INFO L93 Difference]: Finished difference Result 2514 states and 4838 transitions. [2022-01-10 02:19:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:38,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-01-10 02:19:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:38,580 INFO L225 Difference]: With dead ends: 2514 [2022-01-10 02:19:38,580 INFO L226 Difference]: Without dead ends: 1580 [2022-01-10 02:19:38,586 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 02:19:38,589 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 998 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:38,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 282 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-10 02:19:38,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-01-10 02:19:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2022-01-10 02:19:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1578 states have (on average 1.8390367553865652) internal successors, (2902), 1579 states have internal predecessors, (2902), 0 states have call successors, (0), 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 02:19:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2902 transitions. [2022-01-10 02:19:38,668 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2902 transitions. Word has length 24 [2022-01-10 02:19:38,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:38,668 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 2902 transitions. [2022-01-10 02:19:38,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 02:19:38,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2902 transitions. [2022-01-10 02:19:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-10 02:19:38,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:38,669 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] [2022-01-10 02:19:38,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:19:38,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:38,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:38,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1951091139, now seen corresponding path program 1 times [2022-01-10 02:19:38,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:38,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356670960] [2022-01-10 02:19:38,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:38,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:38,718 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 02:19:38,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:38,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356670960] [2022-01-10 02:19:38,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356670960] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:38,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:38,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:19:38,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781620509] [2022-01-10 02:19:38,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:38,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:19:38,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:38,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:19:38,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:19:38,721 INFO L87 Difference]: Start difference. First operand 1580 states and 2902 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 02:19:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:38,771 INFO L93 Difference]: Finished difference Result 1630 states and 2978 transitions. [2022-01-10 02:19:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 02:19:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-01-10 02:19:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:38,777 INFO L225 Difference]: With dead ends: 1630 [2022-01-10 02:19:38,777 INFO L226 Difference]: Without dead ends: 1580 [2022-01-10 02:19:38,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:19:38,779 INFO L933 BasicCegarLoop]: 1561 mSDtfsCounter, 3 mSDsluCounter, 4657 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:38,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6218 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:38,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-01-10 02:19:38,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1580. [2022-01-10 02:19:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1578 states have (on average 1.8244613434727504) internal successors, (2879), 1579 states have internal predecessors, (2879), 0 states have call successors, (0), 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 02:19:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2879 transitions. [2022-01-10 02:19:38,807 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2879 transitions. Word has length 30 [2022-01-10 02:19:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:38,807 INFO L470 AbstractCegarLoop]: Abstraction has 1580 states and 2879 transitions. [2022-01-10 02:19:38,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 02:19:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2879 transitions. [2022-01-10 02:19:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 02:19:38,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:38,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:38,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:19:38,809 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:38,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash 568524862, now seen corresponding path program 1 times [2022-01-10 02:19:38,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:38,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311841652] [2022-01-10 02:19:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:38,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:38,880 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 02:19:38,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:38,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311841652] [2022-01-10 02:19:38,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311841652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:38,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:38,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:19:38,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523236918] [2022-01-10 02:19:38,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:38,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:19:38,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:19:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:19:38,882 INFO L87 Difference]: Start difference. First operand 1580 states and 2879 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 02:19:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:39,011 INFO L93 Difference]: Finished difference Result 1948 states and 3455 transitions. [2022-01-10 02:19:39,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:19:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 02:19:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:39,019 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 02:19:39,019 INFO L226 Difference]: Without dead ends: 1902 [2022-01-10 02:19:39,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:19:39,024 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 6574 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6574 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:39,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6574 Valid, 2078 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:39,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-01-10 02:19:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1624. [2022-01-10 02:19:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1622 states have (on average 1.8175092478421702) internal successors, (2948), 1623 states have internal predecessors, (2948), 0 states have call successors, (0), 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 02:19:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2948 transitions. [2022-01-10 02:19:39,122 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2948 transitions. Word has length 52 [2022-01-10 02:19:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:39,123 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 2948 transitions. [2022-01-10 02:19:39,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 02:19:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2948 transitions. [2022-01-10 02:19:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 02:19:39,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:39,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:39,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:19:39,129 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:39,130 INFO L85 PathProgramCache]: Analyzing trace with hash -524152242, now seen corresponding path program 1 times [2022-01-10 02:19:39,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:39,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100239471] [2022-01-10 02:19:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:39,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:39,183 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 02:19:39,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:39,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100239471] [2022-01-10 02:19:39,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100239471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:39,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:39,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:39,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118715657] [2022-01-10 02:19:39,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:39,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:39,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:39,185 INFO L87 Difference]: Start difference. First operand 1624 states and 2948 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:39,218 INFO L93 Difference]: Finished difference Result 1793 states and 3211 transitions. [2022-01-10 02:19:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:39,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 02:19:39,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:39,224 INFO L225 Difference]: With dead ends: 1793 [2022-01-10 02:19:39,224 INFO L226 Difference]: Without dead ends: 1703 [2022-01-10 02:19:39,224 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 02:19:39,225 INFO L933 BasicCegarLoop]: 1536 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:39,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 1601 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:39,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2022-01-10 02:19:39,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1699. [2022-01-10 02:19:39,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1697 states have (on average 1.804360636417207) internal successors, (3062), 1698 states have internal predecessors, (3062), 0 states have call successors, (0), 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 02:19:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 3062 transitions. [2022-01-10 02:19:39,254 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 3062 transitions. Word has length 54 [2022-01-10 02:19:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:39,254 INFO L470 AbstractCegarLoop]: Abstraction has 1699 states and 3062 transitions. [2022-01-10 02:19:39,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 3062 transitions. [2022-01-10 02:19:39,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 02:19:39,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:39,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:39,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:19:39,256 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:39,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash -457658730, now seen corresponding path program 1 times [2022-01-10 02:19:39,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:39,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583990822] [2022-01-10 02:19:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:39,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:39,387 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 02:19:39,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:39,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583990822] [2022-01-10 02:19:39,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583990822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:39,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:39,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:19:39,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67218548] [2022-01-10 02:19:39,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:39,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:19:39,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:39,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:19:39,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:19:39,390 INFO L87 Difference]: Start difference. First operand 1699 states and 3062 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:39,494 INFO L93 Difference]: Finished difference Result 1866 states and 3318 transitions. [2022-01-10 02:19:39,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:19:39,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 02:19:39,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:39,501 INFO L225 Difference]: With dead ends: 1866 [2022-01-10 02:19:39,501 INFO L226 Difference]: Without dead ends: 1701 [2022-01-10 02:19:39,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:19:39,503 INFO L933 BasicCegarLoop]: 1540 mSDtfsCounter, 1593 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:39,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1593 Valid, 1814 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:39,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-01-10 02:19:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1699. [2022-01-10 02:19:39,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1699 states, 1697 states have (on average 1.803182086034178) internal successors, (3060), 1698 states have internal predecessors, (3060), 0 states have call successors, (0), 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 02:19:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 3060 transitions. [2022-01-10 02:19:39,535 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 3060 transitions. Word has length 54 [2022-01-10 02:19:39,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:39,535 INFO L470 AbstractCegarLoop]: Abstraction has 1699 states and 3060 transitions. [2022-01-10 02:19:39,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 3060 transitions. [2022-01-10 02:19:39,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 02:19:39,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:39,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:39,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:19:39,537 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1331255346, now seen corresponding path program 1 times [2022-01-10 02:19:39,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:39,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915574619] [2022-01-10 02:19:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:39,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:39,608 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 02:19:39,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:39,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915574619] [2022-01-10 02:19:39,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915574619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:39,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:39,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:39,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728225263] [2022-01-10 02:19:39,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:39,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:39,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:39,610 INFO L87 Difference]: Start difference. First operand 1699 states and 3060 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:39,648 INFO L93 Difference]: Finished difference Result 2005 states and 3526 transitions. [2022-01-10 02:19:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:39,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 02:19:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:39,654 INFO L225 Difference]: With dead ends: 2005 [2022-01-10 02:19:39,654 INFO L226 Difference]: Without dead ends: 1840 [2022-01-10 02:19:39,655 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 02:19:39,657 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:39,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1489 Valid, 1639 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-01-10 02:19:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1838. [2022-01-10 02:19:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1836 states have (on average 1.7799564270152506) internal successors, (3268), 1837 states have internal predecessors, (3268), 0 states have call successors, (0), 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 02:19:39,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 3268 transitions. [2022-01-10 02:19:39,696 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 3268 transitions. Word has length 54 [2022-01-10 02:19:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:39,696 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 3268 transitions. [2022-01-10 02:19:39,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 3268 transitions. [2022-01-10 02:19:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 02:19:39,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:39,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:39,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:19:39,697 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1716204334, now seen corresponding path program 1 times [2022-01-10 02:19:39,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:39,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607116177] [2022-01-10 02:19:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:39,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:39,726 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 02:19:39,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:39,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607116177] [2022-01-10 02:19:39,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607116177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:39,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:39,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:39,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143384545] [2022-01-10 02:19:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:39,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:39,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:39,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:39,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:39,728 INFO L87 Difference]: Start difference. First operand 1838 states and 3268 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:39,771 INFO L93 Difference]: Finished difference Result 2398 states and 4110 transitions. [2022-01-10 02:19:39,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:39,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 02:19:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:39,778 INFO L225 Difference]: With dead ends: 2398 [2022-01-10 02:19:39,778 INFO L226 Difference]: Without dead ends: 2094 [2022-01-10 02:19:39,779 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 02:19:39,780 INFO L933 BasicCegarLoop]: 1570 mSDtfsCounter, 1493 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:39,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 1648 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2022-01-10 02:19:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2092. [2022-01-10 02:19:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2090 states have (on average 1.7416267942583732) internal successors, (3640), 2091 states have internal predecessors, (3640), 0 states have call successors, (0), 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 02:19:39,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 3640 transitions. [2022-01-10 02:19:39,826 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 3640 transitions. Word has length 54 [2022-01-10 02:19:39,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:39,827 INFO L470 AbstractCegarLoop]: Abstraction has 2092 states and 3640 transitions. [2022-01-10 02:19:39,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 3640 transitions. [2022-01-10 02:19:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 02:19:39,827 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:39,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:39,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:19:39,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1442516622, now seen corresponding path program 1 times [2022-01-10 02:19:39,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:39,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809138674] [2022-01-10 02:19:39,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:39,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:39,852 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 02:19:39,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:39,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809138674] [2022-01-10 02:19:39,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809138674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:39,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:39,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:39,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129485486] [2022-01-10 02:19:39,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:39,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:39,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:39,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:39,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:39,854 INFO L87 Difference]: Start difference. First operand 2092 states and 3640 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:39,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:39,915 INFO L93 Difference]: Finished difference Result 3112 states and 5146 transitions. [2022-01-10 02:19:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:39,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 02:19:39,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:39,922 INFO L225 Difference]: With dead ends: 3112 [2022-01-10 02:19:39,923 INFO L226 Difference]: Without dead ends: 2554 [2022-01-10 02:19:39,924 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 02:19:39,924 INFO L933 BasicCegarLoop]: 1583 mSDtfsCounter, 1497 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:39,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1497 Valid, 1657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2022-01-10 02:19:39,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 2552. [2022-01-10 02:19:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.6847058823529413) internal successors, (4296), 2551 states have internal predecessors, (4296), 0 states have call successors, (0), 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 02:19:40,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 4296 transitions. [2022-01-10 02:19:40,006 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 4296 transitions. Word has length 54 [2022-01-10 02:19:40,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:40,006 INFO L470 AbstractCegarLoop]: Abstraction has 2552 states and 4296 transitions. [2022-01-10 02:19:40,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 02:19:40,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 4296 transitions. [2022-01-10 02:19:40,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 02:19:40,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:40,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:40,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:19:40,009 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:40,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:40,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1717241860, now seen corresponding path program 1 times [2022-01-10 02:19:40,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:40,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460503163] [2022-01-10 02:19:40,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:40,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:40,097 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 02:19:40,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:40,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460503163] [2022-01-10 02:19:40,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460503163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:40,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:40,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:19:40,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922833893] [2022-01-10 02:19:40,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:40,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:19:40,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:40,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:19:40,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:19:40,101 INFO L87 Difference]: Start difference. First operand 2552 states and 4296 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 02:19:40,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:40,384 INFO L93 Difference]: Finished difference Result 3322 states and 5397 transitions. [2022-01-10 02:19:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:19:40,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 02:19:40,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:40,393 INFO L225 Difference]: With dead ends: 3322 [2022-01-10 02:19:40,393 INFO L226 Difference]: Without dead ends: 3320 [2022-01-10 02:19:40,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:19:40,394 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 498 mSDsluCounter, 9002 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 10579 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:40,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 10579 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:40,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2022-01-10 02:19:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 2600. [2022-01-10 02:19:40,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2598 states have (on average 1.6689761354888375) internal successors, (4336), 2599 states have internal predecessors, (4336), 0 states have call successors, (0), 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 02:19:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 4336 transitions. [2022-01-10 02:19:40,479 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 4336 transitions. Word has length 55 [2022-01-10 02:19:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:40,479 INFO L470 AbstractCegarLoop]: Abstraction has 2600 states and 4336 transitions. [2022-01-10 02:19:40,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 02:19:40,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 4336 transitions. [2022-01-10 02:19:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 02:19:40,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:40,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:40,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:19:40,480 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash -754642547, now seen corresponding path program 1 times [2022-01-10 02:19:40,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:40,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289272326] [2022-01-10 02:19:40,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:40,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:40,500 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 02:19:40,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:40,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289272326] [2022-01-10 02:19:40,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289272326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:40,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:40,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:40,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876032200] [2022-01-10 02:19:40,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:40,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:40,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:40,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:40,502 INFO L87 Difference]: Start difference. First operand 2600 states and 4336 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 02:19:40,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:40,603 INFO L93 Difference]: Finished difference Result 3695 states and 5926 transitions. [2022-01-10 02:19:40,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:40,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 02:19:40,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:40,612 INFO L225 Difference]: With dead ends: 3695 [2022-01-10 02:19:40,612 INFO L226 Difference]: Without dead ends: 3084 [2022-01-10 02:19:40,613 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 02:19:40,614 INFO L933 BasicCegarLoop]: 1591 mSDtfsCounter, 1498 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:40,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1661 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:40,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-01-10 02:19:40,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 3082. [2022-01-10 02:19:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3080 states have (on average 1.6266233766233766) internal successors, (5010), 3081 states have internal predecessors, (5010), 0 states have call successors, (0), 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 02:19:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 5010 transitions. [2022-01-10 02:19:40,780 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 5010 transitions. Word has length 56 [2022-01-10 02:19:40,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:40,781 INFO L470 AbstractCegarLoop]: Abstraction has 3082 states and 5010 transitions. [2022-01-10 02:19:40,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 02:19:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 5010 transitions. [2022-01-10 02:19:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:19:40,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:40,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:40,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:19:40,783 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:40,783 INFO L85 PathProgramCache]: Analyzing trace with hash 457839235, now seen corresponding path program 1 times [2022-01-10 02:19:40,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:40,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335267777] [2022-01-10 02:19:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:40,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 02:19:40,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:40,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335267777] [2022-01-10 02:19:40,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335267777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:40,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:40,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:19:40,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29248862] [2022-01-10 02:19:40,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:40,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:19:40,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:40,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:19:40,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:19:40,837 INFO L87 Difference]: Start difference. First operand 3082 states and 5010 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:19:41,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:41,293 INFO L93 Difference]: Finished difference Result 9588 states and 14251 transitions. [2022-01-10 02:19:41,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:19:41,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 02:19:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:41,315 INFO L225 Difference]: With dead ends: 9588 [2022-01-10 02:19:41,315 INFO L226 Difference]: Without dead ends: 8042 [2022-01-10 02:19:41,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:19:41,321 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 4790 mSDsluCounter, 1770 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4790 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:41,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4790 Valid, 3371 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:41,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8042 states. [2022-01-10 02:19:41,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8042 to 4626. [2022-01-10 02:19:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4624 states have (on average 1.5540657439446366) internal successors, (7186), 4625 states have internal predecessors, (7186), 0 states have call successors, (0), 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 02:19:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 7186 transitions. [2022-01-10 02:19:41,544 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 7186 transitions. Word has length 79 [2022-01-10 02:19:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:41,545 INFO L470 AbstractCegarLoop]: Abstraction has 4626 states and 7186 transitions. [2022-01-10 02:19:41,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:19:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 7186 transitions. [2022-01-10 02:19:41,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:19:41,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:41,546 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:41,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 02:19:41,546 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:41,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1705346851, now seen corresponding path program 1 times [2022-01-10 02:19:41,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:41,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955319526] [2022-01-10 02:19:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:41,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:41,594 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-10 02:19:41,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:41,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955319526] [2022-01-10 02:19:41,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955319526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:41,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:41,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:19:41,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627401276] [2022-01-10 02:19:41,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:41,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:19:41,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:41,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:19:41,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:19:41,596 INFO L87 Difference]: Start difference. First operand 4626 states and 7186 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 02:19:42,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:42,167 INFO L93 Difference]: Finished difference Result 11132 states and 16427 transitions. [2022-01-10 02:19:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:19:42,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 79 [2022-01-10 02:19:42,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:42,181 INFO L225 Difference]: With dead ends: 11132 [2022-01-10 02:19:42,182 INFO L226 Difference]: Without dead ends: 9586 [2022-01-10 02:19:42,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:19:42,187 INFO L933 BasicCegarLoop]: 1603 mSDtfsCounter, 4739 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4739 SdHoareTripleChecker+Valid, 3418 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:42,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4739 Valid, 3418 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:42,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9586 states. [2022-01-10 02:19:42,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9586 to 6946. [2022-01-10 02:19:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6944 states have (on average 1.502016129032258) internal successors, (10430), 6945 states have internal predecessors, (10430), 0 states have call successors, (0), 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 02:19:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 10430 transitions. [2022-01-10 02:19:42,614 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 10430 transitions. Word has length 79 [2022-01-10 02:19:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:42,614 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 10430 transitions. [2022-01-10 02:19:42,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 02:19:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 10430 transitions. [2022-01-10 02:19:42,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 02:19:42,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:42,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:42,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:19:42,616 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:42,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1979034563, now seen corresponding path program 1 times [2022-01-10 02:19:42,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:42,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365169341] [2022-01-10 02:19:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:42,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 02:19:42,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:42,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365169341] [2022-01-10 02:19:42,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365169341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:42,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:42,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:19:42,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055359293] [2022-01-10 02:19:42,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:42,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:19:42,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:42,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:19:42,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:19:42,676 INFO L87 Difference]: Start difference. First operand 6946 states and 10430 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:19:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:43,309 INFO L93 Difference]: Finished difference Result 12676 states and 18603 transitions. [2022-01-10 02:19:43,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:19:43,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 02:19:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:43,327 INFO L225 Difference]: With dead ends: 12676 [2022-01-10 02:19:43,327 INFO L226 Difference]: Without dead ends: 11130 [2022-01-10 02:19:43,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:19:43,335 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 4770 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4770 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:43,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4770 Valid, 3408 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:43,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11130 states. [2022-01-10 02:19:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11130 to 8490. [2022-01-10 02:19:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8490 states, 8488 states have (on average 1.4851555136663526) internal successors, (12606), 8489 states have internal predecessors, (12606), 0 states have call successors, (0), 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 02:19:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8490 states to 8490 states and 12606 transitions. [2022-01-10 02:19:43,933 INFO L78 Accepts]: Start accepts. Automaton has 8490 states and 12606 transitions. Word has length 79 [2022-01-10 02:19:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:43,934 INFO L470 AbstractCegarLoop]: Abstraction has 8490 states and 12606 transitions. [2022-01-10 02:19:43,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:19:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 8490 states and 12606 transitions. [2022-01-10 02:19:43,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 02:19:43,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:43,936 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:43,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:19:43,937 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:43,937 INFO L85 PathProgramCache]: Analyzing trace with hash 547636123, now seen corresponding path program 1 times [2022-01-10 02:19:43,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:43,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182664515] [2022-01-10 02:19:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:43,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:19:43,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:43,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182664515] [2022-01-10 02:19:43,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182664515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:43,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:43,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:43,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296752653] [2022-01-10 02:19:43,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:43,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:43,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:43,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:43,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:43,984 INFO L87 Difference]: Start difference. First operand 8490 states and 12606 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:19:44,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:44,375 INFO L93 Difference]: Finished difference Result 13416 states and 19623 transitions. [2022-01-10 02:19:44,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:44,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 02:19:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:44,387 INFO L225 Difference]: With dead ends: 13416 [2022-01-10 02:19:44,387 INFO L226 Difference]: Without dead ends: 6462 [2022-01-10 02:19:44,396 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 02:19:44,397 INFO L933 BasicCegarLoop]: 1572 mSDtfsCounter, 45 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:44,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 3096 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6462 states. [2022-01-10 02:19:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6462 to 6460. [2022-01-10 02:19:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6460 states, 6458 states have (on average 1.5100650356147414) internal successors, (9752), 6459 states have internal predecessors, (9752), 0 states have call successors, (0), 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 02:19:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6460 states to 6460 states and 9752 transitions. [2022-01-10 02:19:44,815 INFO L78 Accepts]: Start accepts. Automaton has 6460 states and 9752 transitions. Word has length 81 [2022-01-10 02:19:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:44,815 INFO L470 AbstractCegarLoop]: Abstraction has 6460 states and 9752 transitions. [2022-01-10 02:19:44,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:19:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6460 states and 9752 transitions. [2022-01-10 02:19:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 02:19:44,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:44,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:44,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:19:44,817 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:44,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:44,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1706064798, now seen corresponding path program 1 times [2022-01-10 02:19:44,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:44,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338613346] [2022-01-10 02:19:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:44,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:44,861 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:19:44,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:44,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338613346] [2022-01-10 02:19:44,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338613346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:44,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:44,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:19:44,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226678841] [2022-01-10 02:19:44,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:44,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:19:44,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:44,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:19:44,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:19:44,862 INFO L87 Difference]: Start difference. First operand 6460 states and 9752 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:19:45,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:45,324 INFO L93 Difference]: Finished difference Result 10822 states and 15965 transitions. [2022-01-10 02:19:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:19:45,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 02:19:45,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:45,340 INFO L225 Difference]: With dead ends: 10822 [2022-01-10 02:19:45,340 INFO L226 Difference]: Without dead ends: 9732 [2022-01-10 02:19:45,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:19:45,345 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 4758 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:45,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 3390 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9732 states. [2022-01-10 02:19:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9732 to 7548. [2022-01-10 02:19:45,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7548 states, 7546 states have (on average 1.495891863238802) internal successors, (11288), 7547 states have internal predecessors, (11288), 0 states have call successors, (0), 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 02:19:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7548 states to 7548 states and 11288 transitions. [2022-01-10 02:19:45,808 INFO L78 Accepts]: Start accepts. Automaton has 7548 states and 11288 transitions. Word has length 81 [2022-01-10 02:19:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:45,809 INFO L470 AbstractCegarLoop]: Abstraction has 7548 states and 11288 transitions. [2022-01-10 02:19:45,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:19:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7548 states and 11288 transitions. [2022-01-10 02:19:45,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 02:19:45,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:45,811 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:45,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 02:19:45,811 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1625443301, now seen corresponding path program 1 times [2022-01-10 02:19:45,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:45,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480550591] [2022-01-10 02:19:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:45,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:45,840 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:19:45,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480550591] [2022-01-10 02:19:45,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480550591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:45,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:45,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:45,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026618912] [2022-01-10 02:19:45,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:45,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:45,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:45,842 INFO L87 Difference]: Start difference. First operand 7548 states and 11288 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 02:19:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:46,091 INFO L93 Difference]: Finished difference Result 10544 states and 15514 transitions. [2022-01-10 02:19:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 02:19:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:46,098 INFO L225 Difference]: With dead ends: 10544 [2022-01-10 02:19:46,098 INFO L226 Difference]: Without dead ends: 4558 [2022-01-10 02:19:46,104 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 02:19:46,105 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 39 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3081 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:46,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 3081 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4558 states. [2022-01-10 02:19:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4558 to 4556. [2022-01-10 02:19:46,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 4554 states have (on average 1.541501976284585) internal successors, (7020), 4555 states have internal predecessors, (7020), 0 states have call successors, (0), 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 02:19:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 7020 transitions. [2022-01-10 02:19:46,352 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 7020 transitions. Word has length 82 [2022-01-10 02:19:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:46,353 INFO L470 AbstractCegarLoop]: Abstraction has 4556 states and 7020 transitions. [2022-01-10 02:19:46,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 02:19:46,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 7020 transitions. [2022-01-10 02:19:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 02:19:46,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:46,357 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:19:46,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:19:46,357 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:46,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1082921701, now seen corresponding path program 1 times [2022-01-10 02:19:46,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:46,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020941735] [2022-01-10 02:19:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:46,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:19:46,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:46,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020941735] [2022-01-10 02:19:46,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020941735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:46,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:46,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:46,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086273659] [2022-01-10 02:19:46,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:46,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:46,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:46,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:46,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:46,400 INFO L87 Difference]: Start difference. First operand 4556 states and 7020 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 02:19:46,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:46,500 INFO L93 Difference]: Finished difference Result 6056 states and 9112 transitions. [2022-01-10 02:19:46,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:46,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 02:19:46,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:46,505 INFO L225 Difference]: With dead ends: 6056 [2022-01-10 02:19:46,505 INFO L226 Difference]: Without dead ends: 3062 [2022-01-10 02:19:46,508 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 02:19:46,508 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 35 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:46,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 3066 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:46,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2022-01-10 02:19:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3060. [2022-01-10 02:19:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3058 states have (on average 1.6049705689993459) internal successors, (4908), 3059 states have internal predecessors, (4908), 0 states have call successors, (0), 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 02:19:46,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4908 transitions. [2022-01-10 02:19:46,614 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4908 transitions. Word has length 82 [2022-01-10 02:19:46,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:46,614 INFO L470 AbstractCegarLoop]: Abstraction has 3060 states and 4908 transitions. [2022-01-10 02:19:46,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 02:19:46,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4908 transitions. [2022-01-10 02:19:46,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 02:19:46,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:46,615 INFO L514 BasicCegarLoop]: trace histogram [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 02:19:46,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:19:46,616 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1170040495, now seen corresponding path program 1 times [2022-01-10 02:19:46,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:46,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956491329] [2022-01-10 02:19:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:46,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:19:46,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956491329] [2022-01-10 02:19:46,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956491329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:19:46,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:19:46,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 02:19:46,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439707217] [2022-01-10 02:19:46,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:19:46,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 02:19:46,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 02:19:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 02:19:46,653 INFO L87 Difference]: Start difference. First operand 3060 states and 4908 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 02:19:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:46,713 INFO L93 Difference]: Finished difference Result 3812 states and 5944 transitions. [2022-01-10 02:19:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 02:19:46,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 02:19:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:46,716 INFO L225 Difference]: With dead ends: 3812 [2022-01-10 02:19:46,716 INFO L226 Difference]: Without dead ends: 2314 [2022-01-10 02:19:46,717 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 02:19:46,718 INFO L933 BasicCegarLoop]: 1551 mSDtfsCounter, 31 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3051 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:46,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 3051 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:19:46,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2022-01-10 02:19:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2312. [2022-01-10 02:19:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2310 states have (on average 1.6722943722943724) internal successors, (3863), 2311 states have internal predecessors, (3863), 0 states have call successors, (0), 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 02:19:46,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 3863 transitions. [2022-01-10 02:19:46,781 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 3863 transitions. Word has length 82 [2022-01-10 02:19:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:46,782 INFO L470 AbstractCegarLoop]: Abstraction has 2312 states and 3863 transitions. [2022-01-10 02:19:46,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 02:19:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 3863 transitions. [2022-01-10 02:19:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 02:19:46,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:46,783 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:19:46,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 02:19:46,783 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:46,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:46,791 INFO L85 PathProgramCache]: Analyzing trace with hash 2005651591, now seen corresponding path program 1 times [2022-01-10 02:19:46,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:46,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792497584] [2022-01-10 02:19:46,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:46,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:46,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:19:47,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:47,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792497584] [2022-01-10 02:19:47,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792497584] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:19:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350066016] [2022-01-10 02:19:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:47,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:19:47,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:19:47,004 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 02:19:47,071 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 02:19:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:47,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 02:19:47,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:19:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:19:47,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:19:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 02:19:47,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350066016] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:19:47,626 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:19:47,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-01-10 02:19:47,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968719220] [2022-01-10 02:19:47,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:19:47,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-10 02:19:47,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:47,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-10 02:19:47,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-01-10 02:19:47,628 INFO L87 Difference]: Start difference. First operand 2312 states and 3863 transitions. Second operand has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 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 02:19:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:19:50,652 INFO L93 Difference]: Finished difference Result 11471 states and 16074 transitions. [2022-01-10 02:19:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-10 02:19:50,653 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 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 82 [2022-01-10 02:19:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:19:50,669 INFO L225 Difference]: With dead ends: 11471 [2022-01-10 02:19:50,670 INFO L226 Difference]: Without dead ends: 10721 [2022-01-10 02:19:50,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 159 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2022-01-10 02:19:50,676 INFO L933 BasicCegarLoop]: 1547 mSDtfsCounter, 17718 mSDsluCounter, 5128 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17718 SdHoareTripleChecker+Valid, 6675 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:19:50,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17718 Valid, 6675 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:19:50,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10721 states. [2022-01-10 02:19:51,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10721 to 7981. [2022-01-10 02:19:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7981 states, 7979 states have (on average 1.3937836821656848) internal successors, (11121), 7980 states have internal predecessors, (11121), 0 states have call successors, (0), 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 02:19:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7981 states to 7981 states and 11121 transitions. [2022-01-10 02:19:51,271 INFO L78 Accepts]: Start accepts. Automaton has 7981 states and 11121 transitions. Word has length 82 [2022-01-10 02:19:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:19:51,271 INFO L470 AbstractCegarLoop]: Abstraction has 7981 states and 11121 transitions. [2022-01-10 02:19:51,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.722222222222221) internal successors, (229), 18 states have internal predecessors, (229), 0 states have call successors, (0), 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 02:19:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 7981 states and 11121 transitions. [2022-01-10 02:19:51,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 02:19:51,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:19:51,273 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:19:51,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 02:19:51,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:19:51,493 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:19:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:19:51,493 INFO L85 PathProgramCache]: Analyzing trace with hash -10585946, now seen corresponding path program 1 times [2022-01-10 02:19:51,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:19:51,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962313583] [2022-01-10 02:19:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:51,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:19:51,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:19:51,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:19:51,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962313583] [2022-01-10 02:19:51,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962313583] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:19:51,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176465785] [2022-01-10 02:19:51,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:19:51,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:19:51,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:19:51,684 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 02:19:51,688 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 02:19:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:19:51,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 02:19:51,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:19:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:19:52,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:19:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:19:52,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176465785] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:19:52,927 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:19:52,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-01-10 02:19:52,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183277239] [2022-01-10 02:19:52,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:19:52,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-10 02:19:52,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:19:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-10 02:19:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=754, Unknown=0, NotChecked=0, Total=870 [2022-01-10 02:19:52,928 INFO L87 Difference]: Start difference. First operand 7981 states and 11121 transitions. Second operand has 30 states, 30 states have (on average 7.3) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 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 02:20:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:02,116 INFO L93 Difference]: Finished difference Result 81832 states and 105276 transitions. [2022-01-10 02:20:02,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-10 02:20:02,116 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.3) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 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 83 [2022-01-10 02:20:02,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:02,235 INFO L225 Difference]: With dead ends: 81832 [2022-01-10 02:20:02,235 INFO L226 Difference]: Without dead ends: 75502 [2022-01-10 02:20:02,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2528 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1411, Invalid=6779, Unknown=0, NotChecked=0, Total=8190 [2022-01-10 02:20:02,258 INFO L933 BasicCegarLoop]: 1581 mSDtfsCounter, 18863 mSDsluCounter, 10438 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18863 SdHoareTripleChecker+Valid, 12019 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:02,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18863 Valid, 12019 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:20:02,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75502 states. [2022-01-10 02:20:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75502 to 40060. [2022-01-10 02:20:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40060 states, 40058 states have (on average 1.2801437915023217) internal successors, (51280), 40059 states have internal predecessors, (51280), 0 states have call successors, (0), 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 02:20:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40060 states to 40060 states and 51280 transitions. [2022-01-10 02:20:06,462 INFO L78 Accepts]: Start accepts. Automaton has 40060 states and 51280 transitions. Word has length 83 [2022-01-10 02:20:06,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:06,463 INFO L470 AbstractCegarLoop]: Abstraction has 40060 states and 51280 transitions. [2022-01-10 02:20:06,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.3) internal successors, (219), 29 states have internal predecessors, (219), 0 states have call successors, (0), 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 02:20:06,463 INFO L276 IsEmpty]: Start isEmpty. Operand 40060 states and 51280 transitions. [2022-01-10 02:20:06,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 02:20:06,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:06,465 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:20:06,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-10 02:20:06,668 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,SelfDestructingSolverStorable19 [2022-01-10 02:20:06,669 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:06,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash -966330648, now seen corresponding path program 1 times [2022-01-10 02:20:06,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:06,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678971877] [2022-01-10 02:20:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:06,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:06,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:20:06,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:06,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678971877] [2022-01-10 02:20:06,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678971877] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:06,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:06,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:20:06,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263512885] [2022-01-10 02:20:06,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:06,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:20:06,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:06,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:20:06,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:20:06,713 INFO L87 Difference]: Start difference. First operand 40060 states and 51280 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:20:10,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:10,047 INFO L93 Difference]: Finished difference Result 72732 states and 92867 transitions. [2022-01-10 02:20:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:20:10,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 02:20:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:10,098 INFO L225 Difference]: With dead ends: 72732 [2022-01-10 02:20:10,099 INFO L226 Difference]: Without dead ends: 34297 [2022-01-10 02:20:10,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:20:10,126 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 4552 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4552 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:10,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4552 Valid, 2995 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34297 states. [2022-01-10 02:20:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34297 to 34297. [2022-01-10 02:20:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34297 states, 34295 states have (on average 1.2754337366963113) internal successors, (43741), 34296 states have internal predecessors, (43741), 0 states have call successors, (0), 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 02:20:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34297 states to 34297 states and 43741 transitions. [2022-01-10 02:20:13,684 INFO L78 Accepts]: Start accepts. Automaton has 34297 states and 43741 transitions. Word has length 83 [2022-01-10 02:20:13,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:13,684 INFO L470 AbstractCegarLoop]: Abstraction has 34297 states and 43741 transitions. [2022-01-10 02:20:13,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:20:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 34297 states and 43741 transitions. [2022-01-10 02:20:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 02:20:13,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:13,686 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:20:13,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:20:13,686 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:13,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:13,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1521824328, now seen corresponding path program 1 times [2022-01-10 02:20:13,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:13,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192351784] [2022-01-10 02:20:13,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:13,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-10 02:20:13,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:13,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192351784] [2022-01-10 02:20:13,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192351784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:13,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:13,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:20:13,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490976720] [2022-01-10 02:20:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:13,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:20:13,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:20:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:20:13,781 INFO L87 Difference]: Start difference. First operand 34297 states and 43741 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 02:20:17,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:17,948 INFO L93 Difference]: Finished difference Result 58572 states and 74065 transitions. [2022-01-10 02:20:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:20:17,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 83 [2022-01-10 02:20:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:17,979 INFO L225 Difference]: With dead ends: 58572 [2022-01-10 02:20:17,980 INFO L226 Difference]: Without dead ends: 26010 [2022-01-10 02:20:17,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:20:17,999 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 4612 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4612 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:17,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4612 Valid, 2978 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26010 states. [2022-01-10 02:20:20,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26010 to 26010. [2022-01-10 02:20:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26010 states, 26008 states have (on average 1.2639956936327283) internal successors, (32874), 26009 states have internal predecessors, (32874), 0 states have call successors, (0), 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 02:20:20,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26010 states to 26010 states and 32874 transitions. [2022-01-10 02:20:20,828 INFO L78 Accepts]: Start accepts. Automaton has 26010 states and 32874 transitions. Word has length 83 [2022-01-10 02:20:20,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:20,828 INFO L470 AbstractCegarLoop]: Abstraction has 26010 states and 32874 transitions. [2022-01-10 02:20:20,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 02:20:20,828 INFO L276 IsEmpty]: Start isEmpty. Operand 26010 states and 32874 transitions. [2022-01-10 02:20:20,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 02:20:20,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:20,830 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:20:20,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 02:20:20,830 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:20,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:20,830 INFO L85 PathProgramCache]: Analyzing trace with hash -460055256, now seen corresponding path program 1 times [2022-01-10 02:20:20,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:20,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815978498] [2022-01-10 02:20:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:20,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:20:20,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:20,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815978498] [2022-01-10 02:20:20,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815978498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:20:20,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:20:20,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:20:20,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430129136] [2022-01-10 02:20:20,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:20:20,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:20:20,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:20:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:20:20,904 INFO L87 Difference]: Start difference. First operand 26010 states and 32874 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:20:24,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:20:24,480 INFO L93 Difference]: Finished difference Result 45009 states and 56307 transitions. [2022-01-10 02:20:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 02:20:24,481 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 02:20:24,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:20:24,508 INFO L225 Difference]: With dead ends: 45009 [2022-01-10 02:20:24,508 INFO L226 Difference]: Without dead ends: 20601 [2022-01-10 02:20:24,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:20:24,526 INFO L933 BasicCegarLoop]: 1506 mSDtfsCounter, 4617 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4617 SdHoareTripleChecker+Valid, 2976 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:20:24,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4617 Valid, 2976 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:20:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20601 states. [2022-01-10 02:20:27,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20601 to 20601. [2022-01-10 02:20:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20601 states, 20599 states have (on average 1.2617602796252245) internal successors, (25991), 20600 states have internal predecessors, (25991), 0 states have call successors, (0), 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 02:20:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20601 states to 20601 states and 25991 transitions. [2022-01-10 02:20:27,833 INFO L78 Accepts]: Start accepts. Automaton has 20601 states and 25991 transitions. Word has length 83 [2022-01-10 02:20:27,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:20:27,833 INFO L470 AbstractCegarLoop]: Abstraction has 20601 states and 25991 transitions. [2022-01-10 02:20:27,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 02:20:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 20601 states and 25991 transitions. [2022-01-10 02:20:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 02:20:27,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:20:27,835 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 02:20:27,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 02:20:27,836 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:20:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:20:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1663669571, now seen corresponding path program 1 times [2022-01-10 02:20:27,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:20:27,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902459210] [2022-01-10 02:20:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:27,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:20:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:27,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:20:27,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902459210] [2022-01-10 02:20:27,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902459210] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:20:27,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830108206] [2022-01-10 02:20:27,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:20:27,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:20:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:20:27,977 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:20:27,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 02:20:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:20:28,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-10 02:20:28,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:20:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:28,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:20:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:20:29,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830108206] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:20:29,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:20:29,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-01-10 02:20:29,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071187562] [2022-01-10 02:20:29,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:20:29,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 02:20:29,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:20:29,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 02:20:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-01-10 02:20:29,267 INFO L87 Difference]: Start difference. First operand 20601 states and 25991 transitions. Second operand has 23 states, 23 states have (on average 7.956521739130435) internal successors, (183), 22 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)