/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:38:40,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:38:40,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:38:40,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:38:40,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:38:40,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:38:40,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:38:40,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:38:40,496 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:38:40,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:38:40,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:38:40,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:38:40,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:38:40,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:38:40,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:38:40,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:38:40,498 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:38:40,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:38:40,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:38:40,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:38:40,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:38:40,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:38:40,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:38:40,498 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:38:40,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:38:40,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:38:40,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:38:40,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:38:40,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:38:40,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:38:40,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:38:40,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:38:40,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:38:40,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:38:40,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:38:40,500 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:38:40,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:38:40,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:38:40,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:38:40,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:38:40,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:38:40,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:38:40,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:38:40,735 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:38:40,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 01:38:40,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5847ea4/df4703729d5544c4b59c7ebb7bee47b9/FLAG9d23210c6 [2022-01-10 01:38:41,162 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:38:41,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 01:38:41,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5847ea4/df4703729d5544c4b59c7ebb7bee47b9/FLAG9d23210c6 [2022-01-10 01:38:41,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c5847ea4/df4703729d5544c4b59c7ebb7bee47b9 [2022-01-10 01:38:41,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:38:41,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:38:41,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:38:41,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:38:41,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:38:41,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:41,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a896c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41, skipping insertion in model container [2022-01-10 01:38:41,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:41,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:38:41,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:38:41,828 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[7981,7994] [2022-01-10 01:38:41,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:38:41,873 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:38:41,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c[7981,7994] [2022-01-10 01:38:41,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:38:41,966 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:38:41,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41 WrapperNode [2022-01-10 01:38:41,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:38:41,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:38:41,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:38:41,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:38:41,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:41,993 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,026 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 631 [2022-01-10 01:38:42,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:38:42,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:38:42,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:38:42,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:38:42,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:38:42,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:38:42,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:38:42,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:38:42,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (1/1) ... [2022-01-10 01:38:42,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:38:42,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:38:42,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:38:42,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:38:42,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:38:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:38:42,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:38:42,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:38:42,288 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:38:42,289 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:38:42,827 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:38:42,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:38:42,838 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:38:42,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:38:42 BoogieIcfgContainer [2022-01-10 01:38:42,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:38:42,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:38:42,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:38:42,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:38:42,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:38:41" (1/3) ... [2022-01-10 01:38:42,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395fdef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:38:42, skipping insertion in model container [2022-01-10 01:38:42,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:41" (2/3) ... [2022-01-10 01:38:42,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395fdef9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:38:42, skipping insertion in model container [2022-01-10 01:38:42,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:38:42" (3/3) ... [2022-01-10 01:38:42,849 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2022-01-10 01:38:42,854 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:38:42,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:38:42,897 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:38:42,904 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:38:42,904 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:38:42,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7567567567567568) internal successors, (260), 149 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 01:38:42,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:42,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:42,940 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:42,944 INFO L85 PathProgramCache]: Analyzing trace with hash -95572409, now seen corresponding path program 1 times [2022-01-10 01:38:42,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:42,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41918209] [2022-01-10 01:38:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:42,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:43,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:43,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:43,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41918209] [2022-01-10 01:38:43,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41918209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:43,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:43,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:38:43,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865558446] [2022-01-10 01:38:43,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:43,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:38:43,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:43,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:38:43,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:43,373 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7567567567567568) internal successors, (260), 149 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:43,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:43,730 INFO L93 Difference]: Finished difference Result 845 states and 1355 transitions. [2022-01-10 01:38:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 01:38:43,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-10 01:38:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:43,752 INFO L225 Difference]: With dead ends: 845 [2022-01-10 01:38:43,753 INFO L226 Difference]: Without dead ends: 751 [2022-01-10 01:38:43,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:38:43,764 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 1636 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:43,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1636 Valid, 1886 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-01-10 01:38:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 227. [2022-01-10 01:38:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.4513274336283186) internal successors, (328), 226 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 328 transitions. [2022-01-10 01:38:43,851 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 328 transitions. Word has length 76 [2022-01-10 01:38:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:43,852 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 328 transitions. [2022-01-10 01:38:43,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 328 transitions. [2022-01-10 01:38:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:38:43,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:43,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:43,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:38:43,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash -136563640, now seen corresponding path program 1 times [2022-01-10 01:38:43,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:43,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918252739] [2022-01-10 01:38:43,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:43,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:43,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:44,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:44,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918252739] [2022-01-10 01:38:44,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918252739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:44,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:44,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:38:44,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802379448] [2022-01-10 01:38:44,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:44,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:38:44,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:38:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:44,058 INFO L87 Difference]: Start difference. First operand 227 states and 328 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:44,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:44,254 INFO L93 Difference]: Finished difference Result 922 states and 1419 transitions. [2022-01-10 01:38:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:38:44,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 78 [2022-01-10 01:38:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:44,259 INFO L225 Difference]: With dead ends: 922 [2022-01-10 01:38:44,259 INFO L226 Difference]: Without dead ends: 802 [2022-01-10 01:38:44,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:38:44,264 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 1026 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:44,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1026 Valid, 1146 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:44,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-01-10 01:38:44,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 356. [2022-01-10 01:38:44,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 1.4985915492957746) internal successors, (532), 355 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 532 transitions. [2022-01-10 01:38:44,342 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 532 transitions. Word has length 78 [2022-01-10 01:38:44,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:44,345 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 532 transitions. [2022-01-10 01:38:44,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 532 transitions. [2022-01-10 01:38:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:38:44,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:44,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:44,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:38:44,350 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:44,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1646592496, now seen corresponding path program 1 times [2022-01-10 01:38:44,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:44,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928461378] [2022-01-10 01:38:44,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:44,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:44,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:44,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928461378] [2022-01-10 01:38:44,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928461378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:44,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:44,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:38:44,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301713756] [2022-01-10 01:38:44,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:44,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:38:44,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:44,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:38:44,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:44,507 INFO L87 Difference]: Start difference. First operand 356 states and 532 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:44,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:44,698 INFO L93 Difference]: Finished difference Result 1046 states and 1615 transitions. [2022-01-10 01:38:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:38:44,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 78 [2022-01-10 01:38:44,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:44,702 INFO L225 Difference]: With dead ends: 1046 [2022-01-10 01:38:44,704 INFO L226 Difference]: Without dead ends: 926 [2022-01-10 01:38:44,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:38:44,712 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1286 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:44,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 1064 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-01-10 01:38:44,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 539. [2022-01-10 01:38:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5260223048327137) internal successors, (821), 538 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 821 transitions. [2022-01-10 01:38:44,769 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 821 transitions. Word has length 78 [2022-01-10 01:38:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:44,770 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 821 transitions. [2022-01-10 01:38:44,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 821 transitions. [2022-01-10 01:38:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:38:44,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:44,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:44,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:38:44,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:44,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash 641558373, now seen corresponding path program 1 times [2022-01-10 01:38:44,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:44,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863088575] [2022-01-10 01:38:44,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:44,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:45,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:45,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:45,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863088575] [2022-01-10 01:38:45,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863088575] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:45,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:45,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:38:45,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255400913] [2022-01-10 01:38:45,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:45,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:38:45,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:45,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:38:45,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:45,019 INFO L87 Difference]: Start difference. First operand 539 states and 821 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:45,219 INFO L93 Difference]: Finished difference Result 956 states and 1478 transitions. [2022-01-10 01:38:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:38:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 78 [2022-01-10 01:38:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:45,223 INFO L225 Difference]: With dead ends: 956 [2022-01-10 01:38:45,223 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 01:38:45,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:38:45,229 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 700 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:45,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 681 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:45,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 01:38:45,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2022-01-10 01:38:45,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5185873605947955) internal successors, (817), 538 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:45,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 817 transitions. [2022-01-10 01:38:45,295 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 817 transitions. Word has length 78 [2022-01-10 01:38:45,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:45,296 INFO L470 AbstractCegarLoop]: Abstraction has 539 states and 817 transitions. [2022-01-10 01:38:45,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 817 transitions. [2022-01-10 01:38:45,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:38:45,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:45,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:45,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:38:45,298 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:45,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:45,299 INFO L85 PathProgramCache]: Analyzing trace with hash 434659878, now seen corresponding path program 1 times [2022-01-10 01:38:45,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:45,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658187022] [2022-01-10 01:38:45,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:45,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:45,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:45,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658187022] [2022-01-10 01:38:45,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658187022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:45,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:45,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:38:45,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692641474] [2022-01-10 01:38:45,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:45,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:38:45,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:38:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:38:45,370 INFO L87 Difference]: Start difference. First operand 539 states and 817 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 01:38:45,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:45,467 INFO L93 Difference]: Finished difference Result 1324 states and 2046 transitions. [2022-01-10 01:38:45,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:38:45,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 78 [2022-01-10 01:38:45,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:45,472 INFO L225 Difference]: With dead ends: 1324 [2022-01-10 01:38:45,472 INFO L226 Difference]: Without dead ends: 909 [2022-01-10 01:38:45,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:38:45,473 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 83 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:45,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 470 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:38:45,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-01-10 01:38:45,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 907. [2022-01-10 01:38:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 906 states have (on average 1.5220750551876379) internal successors, (1379), 906 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1379 transitions. [2022-01-10 01:38:45,557 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1379 transitions. Word has length 78 [2022-01-10 01:38:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:45,557 INFO L470 AbstractCegarLoop]: Abstraction has 907 states and 1379 transitions. [2022-01-10 01:38:45,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 01:38:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1379 transitions. [2022-01-10 01:38:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:38:45,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:45,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:45,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:38:45,559 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash 450386228, now seen corresponding path program 1 times [2022-01-10 01:38:45,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:45,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49182354] [2022-01-10 01:38:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:45,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:45,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:45,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49182354] [2022-01-10 01:38:45,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49182354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:45,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:45,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:38:45,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744562175] [2022-01-10 01:38:45,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:45,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:38:45,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:45,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:38:45,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:45,643 INFO L87 Difference]: Start difference. First operand 907 states and 1379 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:45,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:45,910 INFO L93 Difference]: Finished difference Result 2058 states and 3161 transitions. [2022-01-10 01:38:45,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:38:45,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 78 [2022-01-10 01:38:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:45,917 INFO L225 Difference]: With dead ends: 2058 [2022-01-10 01:38:45,917 INFO L226 Difference]: Without dead ends: 1833 [2022-01-10 01:38:45,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:38:45,919 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 1033 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:45,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1033 Valid, 1387 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:45,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2022-01-10 01:38:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 1131. [2022-01-10 01:38:46,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 1.527433628318584) internal successors, (1726), 1130 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1726 transitions. [2022-01-10 01:38:46,033 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1726 transitions. Word has length 78 [2022-01-10 01:38:46,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:46,033 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 1726 transitions. [2022-01-10 01:38:46,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1726 transitions. [2022-01-10 01:38:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:38:46,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:46,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:46,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:38:46,034 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:46,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1926158884, now seen corresponding path program 1 times [2022-01-10 01:38:46,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:46,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538488009] [2022-01-10 01:38:46,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:46,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:46,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:46,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538488009] [2022-01-10 01:38:46,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538488009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:46,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:46,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:38:46,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011807685] [2022-01-10 01:38:46,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:46,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:38:46,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:46,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:38:46,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:46,117 INFO L87 Difference]: Start difference. First operand 1131 states and 1726 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:46,454 INFO L93 Difference]: Finished difference Result 2292 states and 3524 transitions. [2022-01-10 01:38:46,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:38:46,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 78 [2022-01-10 01:38:46,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:46,462 INFO L225 Difference]: With dead ends: 2292 [2022-01-10 01:38:46,462 INFO L226 Difference]: Without dead ends: 2067 [2022-01-10 01:38:46,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:38:46,464 INFO L933 BasicCegarLoop]: 395 mSDtfsCounter, 1075 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:46,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 1689 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:46,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2067 states. [2022-01-10 01:38:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2067 to 1370. [2022-01-10 01:38:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 1.5317750182615046) internal successors, (2097), 1369 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2097 transitions. [2022-01-10 01:38:46,602 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2097 transitions. Word has length 78 [2022-01-10 01:38:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:46,602 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 2097 transitions. [2022-01-10 01:38:46,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2097 transitions. [2022-01-10 01:38:46,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:38:46,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:46,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:46,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:38:46,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:46,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:46,605 INFO L85 PathProgramCache]: Analyzing trace with hash 100434268, now seen corresponding path program 1 times [2022-01-10 01:38:46,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:46,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035933035] [2022-01-10 01:38:46,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:46,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:46,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:46,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035933035] [2022-01-10 01:38:46,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035933035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:46,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:46,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:38:46,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694882881] [2022-01-10 01:38:46,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:46,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:38:46,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:46,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:38:46,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:46,690 INFO L87 Difference]: Start difference. First operand 1370 states and 2097 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:47,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:47,042 INFO L93 Difference]: Finished difference Result 2531 states and 3895 transitions. [2022-01-10 01:38:47,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:38:47,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 78 [2022-01-10 01:38:47,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:47,051 INFO L225 Difference]: With dead ends: 2531 [2022-01-10 01:38:47,051 INFO L226 Difference]: Without dead ends: 2306 [2022-01-10 01:38:47,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:38:47,052 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1082 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:47,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 1257 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:47,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2022-01-10 01:38:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 1609. [2022-01-10 01:38:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1609 states, 1608 states have (on average 1.5348258706467661) internal successors, (2468), 1608 states have internal predecessors, (2468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2468 transitions. [2022-01-10 01:38:47,257 INFO L78 Accepts]: Start accepts. Automaton has 1609 states and 2468 transitions. Word has length 78 [2022-01-10 01:38:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:47,258 INFO L470 AbstractCegarLoop]: Abstraction has 1609 states and 2468 transitions. [2022-01-10 01:38:47,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 01:38:47,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1609 states and 2468 transitions. [2022-01-10 01:38:47,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:38:47,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:47,259 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:47,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:38:47,259 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1588436194, now seen corresponding path program 1 times [2022-01-10 01:38:47,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:47,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604884133] [2022-01-10 01:38:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:47,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:47,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:47,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604884133] [2022-01-10 01:38:47,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604884133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:47,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:47,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:47,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556108929] [2022-01-10 01:38:47,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:47,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:47,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:47,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:47,325 INFO L87 Difference]: Start difference. First operand 1609 states and 2468 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 01:38:47,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:47,818 INFO L93 Difference]: Finished difference Result 4698 states and 7251 transitions. [2022-01-10 01:38:47,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:47,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 79 [2022-01-10 01:38:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:47,830 INFO L225 Difference]: With dead ends: 4698 [2022-01-10 01:38:47,830 INFO L226 Difference]: Without dead ends: 3127 [2022-01-10 01:38:47,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:47,836 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 802 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:47,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 178 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2022-01-10 01:38:48,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 3125. [2022-01-10 01:38:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 3124 states have (on average 1.5345710627400768) internal successors, (4794), 3124 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4794 transitions. [2022-01-10 01:38:48,235 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4794 transitions. Word has length 79 [2022-01-10 01:38:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:48,236 INFO L470 AbstractCegarLoop]: Abstraction has 3125 states and 4794 transitions. [2022-01-10 01:38:48,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 01:38:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4794 transitions. [2022-01-10 01:38:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 01:38:48,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:48,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:48,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:38:48,238 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:48,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1613161725, now seen corresponding path program 1 times [2022-01-10 01:38:48,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:48,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641220953] [2022-01-10 01:38:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:48,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:48,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:48,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:48,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641220953] [2022-01-10 01:38:48,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641220953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:48,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:48,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:48,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666297201] [2022-01-10 01:38:48,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:48,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:48,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:48,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:48,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:48,294 INFO L87 Difference]: Start difference. First operand 3125 states and 4794 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 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 01:38:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:48,743 INFO L93 Difference]: Finished difference Result 6196 states and 9530 transitions. [2022-01-10 01:38:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 01:38:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:48,753 INFO L225 Difference]: With dead ends: 6196 [2022-01-10 01:38:48,754 INFO L226 Difference]: Without dead ends: 3125 [2022-01-10 01:38:48,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:48,758 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 502 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:48,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 142 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:48,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2022-01-10 01:38:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3125. [2022-01-10 01:38:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 3124 states have (on average 1.517605633802817) internal successors, (4741), 3124 states have internal predecessors, (4741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:49,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4741 transitions. [2022-01-10 01:38:49,132 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4741 transitions. Word has length 80 [2022-01-10 01:38:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:49,132 INFO L470 AbstractCegarLoop]: Abstraction has 3125 states and 4741 transitions. [2022-01-10 01:38:49,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 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 01:38:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4741 transitions. [2022-01-10 01:38:49,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 01:38:49,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:49,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:49,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:38:49,134 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:49,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:49,135 INFO L85 PathProgramCache]: Analyzing trace with hash -105949250, now seen corresponding path program 1 times [2022-01-10 01:38:49,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:49,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071605189] [2022-01-10 01:38:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:49,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:49,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:49,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071605189] [2022-01-10 01:38:49,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071605189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:49,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:49,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:49,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283483956] [2022-01-10 01:38:49,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:49,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:49,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:49,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:49,194 INFO L87 Difference]: Start difference. First operand 3125 states and 4741 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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 01:38:49,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:49,671 INFO L93 Difference]: Finished difference Result 6200 states and 9429 transitions. [2022-01-10 01:38:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:49,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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 01:38:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:49,682 INFO L225 Difference]: With dead ends: 6200 [2022-01-10 01:38:49,682 INFO L226 Difference]: Without dead ends: 3125 [2022-01-10 01:38:49,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:49,687 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 507 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:49,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 134 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2022-01-10 01:38:50,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3125. [2022-01-10 01:38:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 3124 states have (on average 1.500640204865557) internal successors, (4688), 3124 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:50,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4688 transitions. [2022-01-10 01:38:50,040 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4688 transitions. Word has length 81 [2022-01-10 01:38:50,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:50,040 INFO L470 AbstractCegarLoop]: Abstraction has 3125 states and 4688 transitions. [2022-01-10 01:38:50,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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 01:38:50,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4688 transitions. [2022-01-10 01:38:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 01:38:50,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:50,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:50,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:38:50,042 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:50,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1094855209, now seen corresponding path program 1 times [2022-01-10 01:38:50,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:50,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079092421] [2022-01-10 01:38:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:50,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:50,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:50,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079092421] [2022-01-10 01:38:50,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079092421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:50,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:50,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:50,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906312502] [2022-01-10 01:38:50,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:50,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:50,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:50,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:50,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:50,089 INFO L87 Difference]: Start difference. First operand 3125 states and 4688 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 01:38:50,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:50,538 INFO L93 Difference]: Finished difference Result 6208 states and 9333 transitions. [2022-01-10 01:38:50,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:50,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 01:38:50,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:50,549 INFO L225 Difference]: With dead ends: 6208 [2022-01-10 01:38:50,549 INFO L226 Difference]: Without dead ends: 3125 [2022-01-10 01:38:50,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:50,555 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 523 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:50,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 118 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:50,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2022-01-10 01:38:50,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3125. [2022-01-10 01:38:50,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 3124 states have (on average 1.483674775928297) internal successors, (4635), 3124 states have internal predecessors, (4635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4635 transitions. [2022-01-10 01:38:50,890 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4635 transitions. Word has length 82 [2022-01-10 01:38:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:50,891 INFO L470 AbstractCegarLoop]: Abstraction has 3125 states and 4635 transitions. [2022-01-10 01:38:50,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 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 01:38:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4635 transitions. [2022-01-10 01:38:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 01:38:50,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:50,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:50,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:38:50,892 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:50,893 INFO L85 PathProgramCache]: Analyzing trace with hash -674687266, now seen corresponding path program 1 times [2022-01-10 01:38:50,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:50,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771942161] [2022-01-10 01:38:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:50,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:50,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:50,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:50,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771942161] [2022-01-10 01:38:50,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771942161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:50,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:50,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:50,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552472332] [2022-01-10 01:38:50,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:50,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:50,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:50,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:50,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:50,943 INFO L87 Difference]: Start difference. First operand 3125 states and 4635 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:51,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:51,443 INFO L93 Difference]: Finished difference Result 6204 states and 9223 transitions. [2022-01-10 01:38:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 01:38:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:51,462 INFO L225 Difference]: With dead ends: 6204 [2022-01-10 01:38:51,462 INFO L226 Difference]: Without dead ends: 3125 [2022-01-10 01:38:51,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:38:51,472 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 505 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:51,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 126 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2022-01-10 01:38:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3125. [2022-01-10 01:38:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 3124 states have (on average 1.466709346991037) internal successors, (4582), 3124 states have internal predecessors, (4582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4582 transitions. [2022-01-10 01:38:51,878 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4582 transitions. Word has length 83 [2022-01-10 01:38:51,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:51,879 INFO L470 AbstractCegarLoop]: Abstraction has 3125 states and 4582 transitions. [2022-01-10 01:38:51,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4582 transitions. [2022-01-10 01:38:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 01:38:51,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:51,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:51,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:38:51,880 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:51,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:51,881 INFO L85 PathProgramCache]: Analyzing trace with hash 340263851, now seen corresponding path program 1 times [2022-01-10 01:38:51,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:51,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471237737] [2022-01-10 01:38:51,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:51,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:51,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:51,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471237737] [2022-01-10 01:38:51,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471237737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:51,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:51,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:38:51,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943740971] [2022-01-10 01:38:51,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:51,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:51,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:51,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:51,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:51,955 INFO L87 Difference]: Start difference. First operand 3125 states and 4582 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:52,666 INFO L93 Difference]: Finished difference Result 5155 states and 7559 transitions. [2022-01-10 01:38:52,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:38:52,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 01:38:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:52,674 INFO L225 Difference]: With dead ends: 5155 [2022-01-10 01:38:52,674 INFO L226 Difference]: Without dead ends: 5153 [2022-01-10 01:38:52,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:38:52,675 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 168 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:52,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 773 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:38:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5153 states. [2022-01-10 01:38:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5153 to 3149. [2022-01-10 01:38:53,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3149 states, 3148 states have (on average 1.4587039390088945) internal successors, (4592), 3148 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4592 transitions. [2022-01-10 01:38:53,052 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 4592 transitions. Word has length 84 [2022-01-10 01:38:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:53,052 INFO L470 AbstractCegarLoop]: Abstraction has 3149 states and 4592 transitions. [2022-01-10 01:38:53,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 4592 transitions. [2022-01-10 01:38:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 01:38:53,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:53,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:53,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:38:53,054 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:53,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1580243929, now seen corresponding path program 1 times [2022-01-10 01:38:53,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:53,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737328314] [2022-01-10 01:38:53,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:53,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:53,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:53,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737328314] [2022-01-10 01:38:53,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737328314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:53,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:53,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:53,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818803316] [2022-01-10 01:38:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:53,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:38:53,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:38:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:38:53,127 INFO L87 Difference]: Start difference. First operand 3149 states and 4592 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:53,614 INFO L93 Difference]: Finished difference Result 7362 states and 10757 transitions. [2022-01-10 01:38:53,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 01:38:53,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-01-10 01:38:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:53,621 INFO L225 Difference]: With dead ends: 7362 [2022-01-10 01:38:53,621 INFO L226 Difference]: Without dead ends: 4436 [2022-01-10 01:38:53,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:38:53,625 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 161 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:53,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 452 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:38:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2022-01-10 01:38:54,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4434. [2022-01-10 01:38:54,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.4527408075795172) internal successors, (6440), 4433 states have internal predecessors, (6440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6440 transitions. [2022-01-10 01:38:54,177 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6440 transitions. Word has length 84 [2022-01-10 01:38:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:54,177 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 6440 transitions. [2022-01-10 01:38:54,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6440 transitions. [2022-01-10 01:38:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 01:38:54,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:54,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:54,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:38:54,179 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:54,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:54,179 INFO L85 PathProgramCache]: Analyzing trace with hash 568884420, now seen corresponding path program 1 times [2022-01-10 01:38:54,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:54,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416415866] [2022-01-10 01:38:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:54,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:54,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:54,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:54,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416415866] [2022-01-10 01:38:54,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416415866] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:54,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:54,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:38:54,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080507862] [2022-01-10 01:38:54,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:54,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:38:54,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:54,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:38:54,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:38:54,338 INFO L87 Difference]: Start difference. First operand 4434 states and 6440 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:55,790 INFO L93 Difference]: Finished difference Result 12237 states and 17801 transitions. [2022-01-10 01:38:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:38:55,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 01:38:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:55,805 INFO L225 Difference]: With dead ends: 12237 [2022-01-10 01:38:55,805 INFO L226 Difference]: Without dead ends: 8656 [2022-01-10 01:38:55,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:38:55,810 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 899 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:55,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 321 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:38:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8656 states. [2022-01-10 01:38:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8656 to 4434. [2022-01-10 01:38:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.452515226708775) internal successors, (6439), 4433 states have internal predecessors, (6439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6439 transitions. [2022-01-10 01:38:56,411 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6439 transitions. Word has length 85 [2022-01-10 01:38:56,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:56,412 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 6439 transitions. [2022-01-10 01:38:56,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:56,412 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6439 transitions. [2022-01-10 01:38:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 01:38:56,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:56,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:38:56,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:38:56,414 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1092548816, now seen corresponding path program 1 times [2022-01-10 01:38:56,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:56,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327136084] [2022-01-10 01:38:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:56,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:38:56,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:56,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327136084] [2022-01-10 01:38:56,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327136084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:56,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:56,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 01:38:56,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519613903] [2022-01-10 01:38:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:56,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:38:56,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:38:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:38:56,638 INFO L87 Difference]: Start difference. First operand 4434 states and 6439 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:59,899 INFO L93 Difference]: Finished difference Result 22296 states and 32091 transitions. [2022-01-10 01:38:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 01:38:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 01:38:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:59,930 INFO L225 Difference]: With dead ends: 22296 [2022-01-10 01:38:59,930 INFO L226 Difference]: Without dead ends: 18046 [2022-01-10 01:38:59,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2022-01-10 01:38:59,941 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 2388 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:59,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 562 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 01:38:59,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18046 states. [2022-01-10 01:39:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18046 to 4467. [2022-01-10 01:39:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.4511867442901927) internal successors, (6481), 4466 states have internal predecessors, (6481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6481 transitions. [2022-01-10 01:39:00,829 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6481 transitions. Word has length 85 [2022-01-10 01:39:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:00,829 INFO L470 AbstractCegarLoop]: Abstraction has 4467 states and 6481 transitions. [2022-01-10 01:39:00,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 13 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6481 transitions. [2022-01-10 01:39:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 01:39:00,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:00,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:39:00,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:39:00,831 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash 690607320, now seen corresponding path program 1 times [2022-01-10 01:39:00,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:00,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663606760] [2022-01-10 01:39:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:00,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:39:00,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:00,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663606760] [2022-01-10 01:39:00,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663606760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:00,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:00,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:39:00,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524294676] [2022-01-10 01:39:00,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:00,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:39:00,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:00,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:39:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:39:00,994 INFO L87 Difference]: Start difference. First operand 4467 states and 6481 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:02,162 INFO L93 Difference]: Finished difference Result 9439 states and 13666 transitions. [2022-01-10 01:39:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:39:02,163 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 01:39:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:02,170 INFO L225 Difference]: With dead ends: 9439 [2022-01-10 01:39:02,170 INFO L226 Difference]: Without dead ends: 5127 [2022-01-10 01:39:02,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:39:02,175 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 921 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:02,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 419 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:39:02,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5127 states. [2022-01-10 01:39:02,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5127 to 4434. [2022-01-10 01:39:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.4518384840965486) internal successors, (6436), 4433 states have internal predecessors, (6436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:02,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6436 transitions. [2022-01-10 01:39:02,924 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6436 transitions. Word has length 85 [2022-01-10 01:39:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:02,924 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 6436 transitions. [2022-01-10 01:39:02,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:02,925 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6436 transitions. [2022-01-10 01:39:02,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 01:39:02,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:02,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:39:02,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:39:02,926 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:02,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:02,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1412823236, now seen corresponding path program 1 times [2022-01-10 01:39:02,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:02,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313828395] [2022-01-10 01:39:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:02,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:03,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:39:03,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:03,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313828395] [2022-01-10 01:39:03,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313828395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:03,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:03,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:39:03,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013072529] [2022-01-10 01:39:03,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:03,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:39:03,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:03,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:39:03,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:39:03,075 INFO L87 Difference]: Start difference. First operand 4434 states and 6436 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:04,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:04,769 INFO L93 Difference]: Finished difference Result 13150 states and 19056 transitions. [2022-01-10 01:39:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:39:04,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 01:39:04,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:04,779 INFO L225 Difference]: With dead ends: 13150 [2022-01-10 01:39:04,779 INFO L226 Difference]: Without dead ends: 8883 [2022-01-10 01:39:04,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:39:04,785 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 966 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:04,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 377 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:39:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-01-10 01:39:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 4434. [2022-01-10 01:39:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.449808256259869) internal successors, (6427), 4433 states have internal predecessors, (6427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:05,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6427 transitions. [2022-01-10 01:39:05,543 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6427 transitions. Word has length 85 [2022-01-10 01:39:05,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:05,543 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 6427 transitions. [2022-01-10 01:39:05,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:05,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6427 transitions. [2022-01-10 01:39:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 01:39:05,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:05,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:39:05,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:39:05,545 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:05,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 858219453, now seen corresponding path program 1 times [2022-01-10 01:39:05,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:05,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961925301] [2022-01-10 01:39:05,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:05,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:39:05,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:05,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961925301] [2022-01-10 01:39:05,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961925301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:05,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:05,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:39:05,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625882355] [2022-01-10 01:39:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:05,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:39:05,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:39:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:39:05,664 INFO L87 Difference]: Start difference. First operand 4434 states and 6427 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:07,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:07,635 INFO L93 Difference]: Finished difference Result 13195 states and 19107 transitions. [2022-01-10 01:39:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:39:07,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-01-10 01:39:07,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:07,644 INFO L225 Difference]: With dead ends: 13195 [2022-01-10 01:39:07,644 INFO L226 Difference]: Without dead ends: 8898 [2022-01-10 01:39:07,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:39:07,648 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 656 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:07,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 549 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:39:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2022-01-10 01:39:08,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 4434. [2022-01-10 01:39:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.448454771035416) internal successors, (6421), 4433 states have internal predecessors, (6421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:08,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6421 transitions. [2022-01-10 01:39:08,455 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6421 transitions. Word has length 86 [2022-01-10 01:39:08,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:08,455 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 6421 transitions. [2022-01-10 01:39:08,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6421 transitions. [2022-01-10 01:39:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 01:39:08,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:08,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:39:08,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:39:08,456 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:08,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:08,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1331278477, now seen corresponding path program 1 times [2022-01-10 01:39:08,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:08,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083761227] [2022-01-10 01:39:08,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:08,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:08,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:39:08,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:08,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083761227] [2022-01-10 01:39:08,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083761227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:08,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:08,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 01:39:08,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481375115] [2022-01-10 01:39:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:08,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 01:39:08,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 01:39:08,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 01:39:08,614 INFO L87 Difference]: Start difference. First operand 4434 states and 6421 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:10,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:10,957 INFO L93 Difference]: Finished difference Result 13075 states and 18921 transitions. [2022-01-10 01:39:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:39:10,957 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 01:39:10,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:10,966 INFO L225 Difference]: With dead ends: 13075 [2022-01-10 01:39:10,967 INFO L226 Difference]: Without dead ends: 8853 [2022-01-10 01:39:10,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:39:10,970 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 959 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:10,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 656 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:39:10,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8853 states. [2022-01-10 01:39:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8853 to 4434. [2022-01-10 01:39:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 4433 states have (on average 1.4459733814572524) internal successors, (6410), 4433 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:11,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6410 transitions. [2022-01-10 01:39:11,887 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6410 transitions. Word has length 87 [2022-01-10 01:39:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:11,887 INFO L470 AbstractCegarLoop]: Abstraction has 4434 states and 6410 transitions. [2022-01-10 01:39:11,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:11,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6410 transitions. [2022-01-10 01:39:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 01:39:11,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:11,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:39:11,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:39:11,888 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:11,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:11,889 INFO L85 PathProgramCache]: Analyzing trace with hash -479617813, now seen corresponding path program 1 times [2022-01-10 01:39:11,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:11,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617582057] [2022-01-10 01:39:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:11,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:39:12,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:12,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617582057] [2022-01-10 01:39:12,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617582057] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:12,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:12,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 01:39:12,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544306456] [2022-01-10 01:39:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:12,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:39:12,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:39:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:39:12,259 INFO L87 Difference]: Start difference. First operand 4434 states and 6410 transitions. Second operand has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:19,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:19,841 INFO L93 Difference]: Finished difference Result 26895 states and 39078 transitions. [2022-01-10 01:39:19,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 01:39:19,841 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 01:39:19,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:19,871 INFO L225 Difference]: With dead ends: 26895 [2022-01-10 01:39:19,871 INFO L226 Difference]: Without dead ends: 25561 [2022-01-10 01:39:19,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-01-10 01:39:19,878 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 1895 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:19,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1895 Valid, 1947 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:39:19,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25561 states. [2022-01-10 01:39:21,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25561 to 4432. [2022-01-10 01:39:21,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4432 states, 4431 states have (on average 1.4436921688106523) internal successors, (6397), 4431 states have internal predecessors, (6397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4432 states to 4432 states and 6397 transitions. [2022-01-10 01:39:21,323 INFO L78 Accepts]: Start accepts. Automaton has 4432 states and 6397 transitions. Word has length 88 [2022-01-10 01:39:21,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:21,323 INFO L470 AbstractCegarLoop]: Abstraction has 4432 states and 6397 transitions. [2022-01-10 01:39:21,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.285714285714286) internal successors, (88), 14 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 4432 states and 6397 transitions. [2022-01-10 01:39:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 01:39:21,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:21,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:39:21,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 01:39:21,325 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:21,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:21,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1342130604, now seen corresponding path program 1 times [2022-01-10 01:39:21,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:21,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725949275] [2022-01-10 01:39:21,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:21,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:39:22,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:22,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725949275] [2022-01-10 01:39:22,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725949275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:22,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:22,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2022-01-10 01:39:22,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061057565] [2022-01-10 01:39:22,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:22,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-10 01:39:22,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-10 01:39:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 01:39:22,365 INFO L87 Difference]: Start difference. First operand 4432 states and 6397 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:33,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:33,896 INFO L93 Difference]: Finished difference Result 18895 states and 27384 transitions. [2022-01-10 01:39:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-10 01:39:33,897 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 01:39:33,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:33,915 INFO L225 Difference]: With dead ends: 18895 [2022-01-10 01:39:33,915 INFO L226 Difference]: Without dead ends: 17777 [2022-01-10 01:39:33,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=600, Invalid=3306, Unknown=0, NotChecked=0, Total=3906 [2022-01-10 01:39:33,920 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 1967 mSDsluCounter, 13215 mSDsCounter, 0 mSdLazyCounter, 8584 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 13898 SdHoareTripleChecker+Invalid, 8674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 8584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:33,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1967 Valid, 13898 Invalid, 8674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 8584 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-01-10 01:39:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17777 states. [2022-01-10 01:39:35,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17777 to 4455. [2022-01-10 01:39:35,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4455 states, 4454 states have (on average 1.4427480916030535) internal successors, (6426), 4454 states have internal predecessors, (6426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 6426 transitions. [2022-01-10 01:39:35,510 INFO L78 Accepts]: Start accepts. Automaton has 4455 states and 6426 transitions. Word has length 88 [2022-01-10 01:39:35,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:35,510 INFO L470 AbstractCegarLoop]: Abstraction has 4455 states and 6426 transitions. [2022-01-10 01:39:35,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 4455 states and 6426 transitions. [2022-01-10 01:39:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 01:39:35,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:35,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:39:35,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 01:39:35,511 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:35,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:35,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1496853068, now seen corresponding path program 1 times [2022-01-10 01:39:35,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:35,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11786267] [2022-01-10 01:39:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:35,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:39:36,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:36,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11786267] [2022-01-10 01:39:36,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11786267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:36,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:36,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-10 01:39:36,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660460060] [2022-01-10 01:39:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:36,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-10 01:39:36,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:36,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-10 01:39:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1022, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 01:39:36,753 INFO L87 Difference]: Start difference. First operand 4455 states and 6426 transitions. Second operand has 34 states, 34 states have (on average 2.588235294117647) internal successors, (88), 34 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)