/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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:38:25,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:38:25,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:38:25,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 01:38:25,620 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 01:38:25,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:38:25,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:38:25,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:38:25,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:38:25,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:38:25,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:38:25,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:38:25,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:38:25,654 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:38:25,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:38:25,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:38:25,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:38:25,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:38:25,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:38:25,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:38:25,656 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:38:25,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:38:25,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:38:25,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:38:25,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:38:25,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:38:25,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:38:25,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:38:25,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:38:25,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:38:25,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:38:25,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:38:25,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:38:25,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:38:25,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:38:25,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:38:25,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:38:25,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:38:25,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:38:25,899 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:38:25,900 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:38:25,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:38:25,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3fc3bfc/e1ee3acac7a24ca5848324663a61e733/FLAGf4cd79b66 [2022-01-10 01:38:26,348 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:38:26,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:38:26,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3fc3bfc/e1ee3acac7a24ca5848324663a61e733/FLAGf4cd79b66 [2022-01-10 01:38:26,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd3fc3bfc/e1ee3acac7a24ca5848324663a61e733 [2022-01-10 01:38:26,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:38:26,384 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:38:26,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:38:26,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:38:26,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:38:26,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e0fc50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26, skipping insertion in model container [2022-01-10 01:38:26,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:38:26,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:38:26,715 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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6636,6649] [2022-01-10 01:38:26,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:38:26,753 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:38:26,788 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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6636,6649] [2022-01-10 01:38:26,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:38:26,835 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:38:26,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26 WrapperNode [2022-01-10 01:38:26,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:38:26,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:38:26,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:38:26,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:38:26,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,884 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 514 [2022-01-10 01:38:26,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:38:26,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:38:26,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:38:26,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:38:26,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:38:26,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:38:26,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:38:26,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:38:26,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (1/1) ... [2022-01-10 01:38:26,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:38:26,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:38:26,950 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 01:38:26,973 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 01:38:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:38:26,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:38:26,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:38:26,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:38:27,090 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:38:27,091 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:38:27,514 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:38:27,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:38:27,522 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:38:27,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:38:27 BoogieIcfgContainer [2022-01-10 01:38:27,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:38:27,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:38:27,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:38:27,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:38:27,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:38:26" (1/3) ... [2022-01-10 01:38:27,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0b839e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:38:27, skipping insertion in model container [2022-01-10 01:38:27,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:38:26" (2/3) ... [2022-01-10 01:38:27,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0b839e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:38:27, skipping insertion in model container [2022-01-10 01:38:27,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:38:27" (3/3) ... [2022-01-10 01:38:27,535 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:38:27,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:38:27,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 01:38:27,575 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:38:27,580 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 01:38:27,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 01:38:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 121 states have (on average 1.743801652892562) internal successors, (211), 122 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 01:38:27,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:27,600 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] [2022-01-10 01:38:27,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:27,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1503533793, now seen corresponding path program 1 times [2022-01-10 01:38:27,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:27,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381622463] [2022-01-10 01:38:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:27,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:27,992 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 01:38:27,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:27,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381622463] [2022-01-10 01:38:27,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381622463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:27,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:27,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:38:27,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407458499] [2022-01-10 01:38:27,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:38:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:28,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:38:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:38:28,033 INFO L87 Difference]: Start difference. First operand has 123 states, 121 states have (on average 1.743801652892562) internal successors, (211), 122 states have internal predecessors, (211), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:28,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:28,349 INFO L93 Difference]: Finished difference Result 588 states and 943 transitions. [2022-01-10 01:38:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:38:28,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 01:38:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:28,374 INFO L225 Difference]: With dead ends: 588 [2022-01-10 01:38:28,374 INFO L226 Difference]: Without dead ends: 518 [2022-01-10 01:38:28,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:38:28,381 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1055 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:28,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1055 Valid, 1117 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:28,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-10 01:38:28,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 186. [2022-01-10 01:38:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.4594594594594594) internal successors, (270), 185 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 270 transitions. [2022-01-10 01:38:28,453 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 270 transitions. Word has length 61 [2022-01-10 01:38:28,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:28,454 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 270 transitions. [2022-01-10 01:38:28,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:28,455 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 270 transitions. [2022-01-10 01:38:28,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 01:38:28,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:28,459 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] [2022-01-10 01:38:28,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:38:28,460 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:28,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:28,463 INFO L85 PathProgramCache]: Analyzing trace with hash -886934908, now seen corresponding path program 1 times [2022-01-10 01:38:28,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:28,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466373111] [2022-01-10 01:38:28,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:28,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:28,590 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 01:38:28,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:28,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466373111] [2022-01-10 01:38:28,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466373111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:28,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:28,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:38:28,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084929976] [2022-01-10 01:38:28,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:28,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:38:28,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:28,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:38:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:38:28,594 INFO L87 Difference]: Start difference. First operand 186 states and 270 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:28,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:28,724 INFO L93 Difference]: Finished difference Result 664 states and 1021 transitions. [2022-01-10 01:38:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:38:28,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 01:38:28,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:28,727 INFO L225 Difference]: With dead ends: 664 [2022-01-10 01:38:28,727 INFO L226 Difference]: Without dead ends: 562 [2022-01-10 01:38:28,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:38:28,733 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 608 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:28,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 760 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-01-10 01:38:28,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 292. [2022-01-10 01:38:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 1.5051546391752577) internal successors, (438), 291 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 438 transitions. [2022-01-10 01:38:28,790 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 438 transitions. Word has length 63 [2022-01-10 01:38:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:28,792 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 438 transitions. [2022-01-10 01:38:28,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 438 transitions. [2022-01-10 01:38:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 01:38:28,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:28,796 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] [2022-01-10 01:38:28,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:38:28,797 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:28,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:28,798 INFO L85 PathProgramCache]: Analyzing trace with hash 497894544, now seen corresponding path program 1 times [2022-01-10 01:38:28,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:28,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579034189] [2022-01-10 01:38:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:28,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:28,944 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 01:38:28,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579034189] [2022-01-10 01:38:28,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579034189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:28,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:28,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:38:28,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352255525] [2022-01-10 01:38:28,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:28,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:38:28,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:38:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:38:28,956 INFO L87 Difference]: Start difference. First operand 292 states and 438 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:29,097 INFO L93 Difference]: Finished difference Result 765 states and 1181 transitions. [2022-01-10 01:38:29,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:38:29,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 01:38:29,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:29,102 INFO L225 Difference]: With dead ends: 765 [2022-01-10 01:38:29,103 INFO L226 Difference]: Without dead ends: 663 [2022-01-10 01:38:29,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:38:29,111 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 687 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:29,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 748 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:29,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-01-10 01:38:29,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 443. [2022-01-10 01:38:29,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5316742081447965) internal successors, (677), 442 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 677 transitions. [2022-01-10 01:38:29,158 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 677 transitions. Word has length 63 [2022-01-10 01:38:29,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:29,159 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 677 transitions. [2022-01-10 01:38:29,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 677 transitions. [2022-01-10 01:38:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 01:38:29,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:29,162 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] [2022-01-10 01:38:29,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:38:29,163 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:29,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:29,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1329115962, now seen corresponding path program 1 times [2022-01-10 01:38:29,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:29,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102087782] [2022-01-10 01:38:29,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:29,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:29,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:29,227 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 01:38:29,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:29,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102087782] [2022-01-10 01:38:29,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102087782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:29,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:29,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:38:29,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973482426] [2022-01-10 01:38:29,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:29,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:38:29,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:29,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:38:29,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:38:29,229 INFO L87 Difference]: Start difference. First operand 443 states and 677 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:29,338 INFO L93 Difference]: Finished difference Result 1102 states and 1714 transitions. [2022-01-10 01:38:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:38:29,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 01:38:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:29,343 INFO L225 Difference]: With dead ends: 1102 [2022-01-10 01:38:29,344 INFO L226 Difference]: Without dead ends: 750 [2022-01-10 01:38:29,345 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 01:38:29,350 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 68 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:29,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 380 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:38:29,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-01-10 01:38:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 734. [2022-01-10 01:38:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.5279672578444747) internal successors, (1120), 733 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1120 transitions. [2022-01-10 01:38:29,420 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1120 transitions. Word has length 63 [2022-01-10 01:38:29,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:29,420 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1120 transitions. [2022-01-10 01:38:29,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,420 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1120 transitions. [2022-01-10 01:38:29,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 01:38:29,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:29,423 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] [2022-01-10 01:38:29,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:38:29,423 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:29,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:29,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1501695225, now seen corresponding path program 1 times [2022-01-10 01:38:29,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:29,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445169375] [2022-01-10 01:38:29,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:29,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:29,602 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 01:38:29,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:29,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445169375] [2022-01-10 01:38:29,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445169375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:29,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:29,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:38:29,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363845894] [2022-01-10 01:38:29,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:29,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:38:29,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:29,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:38:29,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:38:29,605 INFO L87 Difference]: Start difference. First operand 734 states and 1120 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:29,775 INFO L93 Difference]: Finished difference Result 1379 states and 2122 transitions. [2022-01-10 01:38:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:38:29,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 01:38:29,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:29,780 INFO L225 Difference]: With dead ends: 1379 [2022-01-10 01:38:29,780 INFO L226 Difference]: Without dead ends: 736 [2022-01-10 01:38:29,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:38:29,782 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 237 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:29,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 627 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:29,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-01-10 01:38:29,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 734. [2022-01-10 01:38:29,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 733 states have (on average 1.5225102319236017) internal successors, (1116), 733 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1116 transitions. [2022-01-10 01:38:29,846 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1116 transitions. Word has length 63 [2022-01-10 01:38:29,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:29,847 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1116 transitions. [2022-01-10 01:38:29,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1116 transitions. [2022-01-10 01:38:29,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 01:38:29,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:29,848 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] [2022-01-10 01:38:29,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:38:29,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:29,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1505725276, now seen corresponding path program 1 times [2022-01-10 01:38:29,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:29,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147430650] [2022-01-10 01:38:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:29,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:29,949 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 01:38:29,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:29,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147430650] [2022-01-10 01:38:29,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147430650] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:29,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:29,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:38:29,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320335729] [2022-01-10 01:38:29,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:29,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:38:29,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:38:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:38:29,951 INFO L87 Difference]: Start difference. First operand 734 states and 1116 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:30,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:30,177 INFO L93 Difference]: Finished difference Result 1494 states and 2292 transitions. [2022-01-10 01:38:30,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:38:30,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 01:38:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:30,184 INFO L225 Difference]: With dead ends: 1494 [2022-01-10 01:38:30,184 INFO L226 Difference]: Without dead ends: 1309 [2022-01-10 01:38:30,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:38:30,186 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 653 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:30,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 1062 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:30,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2022-01-10 01:38:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 928. [2022-01-10 01:38:30,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 927 states have (on average 1.528586839266451) internal successors, (1417), 927 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1417 transitions. [2022-01-10 01:38:30,309 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1417 transitions. Word has length 63 [2022-01-10 01:38:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:30,309 INFO L470 AbstractCegarLoop]: Abstraction has 928 states and 1417 transitions. [2022-01-10 01:38:30,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1417 transitions. [2022-01-10 01:38:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 01:38:30,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:30,310 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] [2022-01-10 01:38:30,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:38:30,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1830608528, now seen corresponding path program 1 times [2022-01-10 01:38:30,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:30,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974539172] [2022-01-10 01:38:30,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:30,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:30,390 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 01:38:30,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:30,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974539172] [2022-01-10 01:38:30,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974539172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:30,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:30,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:38:30,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846915661] [2022-01-10 01:38:30,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:30,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:38:30,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:30,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:38:30,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:38:30,392 INFO L87 Difference]: Start difference. First operand 928 states and 1417 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:30,611 INFO L93 Difference]: Finished difference Result 1688 states and 2593 transitions. [2022-01-10 01:38:30,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:38:30,612 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 01:38:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:30,618 INFO L225 Difference]: With dead ends: 1688 [2022-01-10 01:38:30,618 INFO L226 Difference]: Without dead ends: 1503 [2022-01-10 01:38:30,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:38:30,619 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 660 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:30,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 774 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2022-01-10 01:38:30,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1122. [2022-01-10 01:38:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.5325602140945584) internal successors, (1718), 1121 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1718 transitions. [2022-01-10 01:38:30,770 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1718 transitions. Word has length 63 [2022-01-10 01:38:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:30,771 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1718 transitions. [2022-01-10 01:38:30,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1718 transitions. [2022-01-10 01:38:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 01:38:30,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:30,772 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] [2022-01-10 01:38:30,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:38:30,772 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:30,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1584928427, now seen corresponding path program 1 times [2022-01-10 01:38:30,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:30,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852772540] [2022-01-10 01:38:30,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:30,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:30,823 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 01:38:30,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:30,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852772540] [2022-01-10 01:38:30,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852772540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:30,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:30,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:30,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207894276] [2022-01-10 01:38:30,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:30,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:30,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:30,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:30,826 INFO L87 Difference]: Start difference. First operand 1122 states and 1718 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:31,041 INFO L93 Difference]: Finished difference Result 2215 states and 3406 transitions. [2022-01-10 01:38:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:31,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 01:38:31,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:31,045 INFO L225 Difference]: With dead ends: 2215 [2022-01-10 01:38:31,046 INFO L226 Difference]: Without dead ends: 1122 [2022-01-10 01:38:31,047 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 01:38:31,048 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 451 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:31,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 91 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-10 01:38:31,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2022-01-10 01:38:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.512042818911686) internal successors, (1695), 1121 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1695 transitions. [2022-01-10 01:38:31,164 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1695 transitions. Word has length 64 [2022-01-10 01:38:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:31,164 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1695 transitions. [2022-01-10 01:38:31,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1695 transitions. [2022-01-10 01:38:31,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 01:38:31,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:31,165 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] [2022-01-10 01:38:31,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:38:31,166 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash -747879712, now seen corresponding path program 1 times [2022-01-10 01:38:31,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:31,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382423750] [2022-01-10 01:38:31,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:31,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:31,226 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 01:38:31,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:31,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382423750] [2022-01-10 01:38:31,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382423750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:31,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:31,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:31,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650270933] [2022-01-10 01:38:31,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:31,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:31,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:31,228 INFO L87 Difference]: Start difference. First operand 1122 states and 1695 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:31,422 INFO L93 Difference]: Finished difference Result 2203 states and 3346 transitions. [2022-01-10 01:38:31,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:31,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 01:38:31,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:31,427 INFO L225 Difference]: With dead ends: 2203 [2022-01-10 01:38:31,427 INFO L226 Difference]: Without dead ends: 1122 [2022-01-10 01:38:31,428 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 01:38:31,429 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 411 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:31,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 115 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:31,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-10 01:38:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2022-01-10 01:38:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.4915254237288136) internal successors, (1672), 1121 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1672 transitions. [2022-01-10 01:38:31,548 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1672 transitions. Word has length 65 [2022-01-10 01:38:31,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:31,548 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1672 transitions. [2022-01-10 01:38:31,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1672 transitions. [2022-01-10 01:38:31,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 01:38:31,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:31,549 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] [2022-01-10 01:38:31,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:38:31,549 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:31,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:31,550 INFO L85 PathProgramCache]: Analyzing trace with hash 431205441, now seen corresponding path program 1 times [2022-01-10 01:38:31,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:31,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045044831] [2022-01-10 01:38:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:31,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:31,595 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 01:38:31,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:31,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045044831] [2022-01-10 01:38:31,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045044831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:31,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:31,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:31,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648737668] [2022-01-10 01:38:31,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:31,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:31,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:31,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:31,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:31,597 INFO L87 Difference]: Start difference. First operand 1122 states and 1672 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:31,804 INFO L93 Difference]: Finished difference Result 2211 states and 3310 transitions. [2022-01-10 01:38:31,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 01:38:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:31,809 INFO L225 Difference]: With dead ends: 2211 [2022-01-10 01:38:31,810 INFO L226 Difference]: Without dead ends: 1122 [2022-01-10 01:38:31,811 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 01:38:31,812 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 427 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:31,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [427 Valid, 99 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:31,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-10 01:38:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2022-01-10 01:38:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.471008028545941) internal successors, (1649), 1121 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1649 transitions. [2022-01-10 01:38:31,944 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1649 transitions. Word has length 66 [2022-01-10 01:38:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:31,944 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1649 transitions. [2022-01-10 01:38:31,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:31,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1649 transitions. [2022-01-10 01:38:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 01:38:31,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:31,945 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] [2022-01-10 01:38:31,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:38:31,945 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:31,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1430381312, now seen corresponding path program 1 times [2022-01-10 01:38:31,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:31,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902152906] [2022-01-10 01:38:31,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:31,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:31,995 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 01:38:31,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:31,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902152906] [2022-01-10 01:38:31,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902152906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:31,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:31,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:38:31,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963372141] [2022-01-10 01:38:31,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:31,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:38:31,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:31,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:38:31,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:38:31,997 INFO L87 Difference]: Start difference. First operand 1122 states and 1649 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:32,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:32,219 INFO L93 Difference]: Finished difference Result 2207 states and 3260 transitions. [2022-01-10 01:38:32,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:38:32,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 01:38:32,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:32,227 INFO L225 Difference]: With dead ends: 2207 [2022-01-10 01:38:32,227 INFO L226 Difference]: Without dead ends: 1122 [2022-01-10 01:38:32,228 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 01:38:32,229 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 409 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:32,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 107 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:38:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-10 01:38:32,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2022-01-10 01:38:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.4504906333630687) internal successors, (1626), 1121 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:32,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1626 transitions. [2022-01-10 01:38:32,346 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1626 transitions. Word has length 67 [2022-01-10 01:38:32,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:32,347 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1626 transitions. [2022-01-10 01:38:32,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1626 transitions. [2022-01-10 01:38:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 01:38:32,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:32,348 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] [2022-01-10 01:38:32,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:38:32,348 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:32,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash -654863315, now seen corresponding path program 1 times [2022-01-10 01:38:32,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:32,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270414875] [2022-01-10 01:38:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:32,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:32,577 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 01:38:32,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:32,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270414875] [2022-01-10 01:38:32,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270414875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:32,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:32,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:38:32,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481377939] [2022-01-10 01:38:32,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:32,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 01:38:32,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 01:38:32,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:38:32,579 INFO L87 Difference]: Start difference. First operand 1122 states and 1626 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:33,413 INFO L93 Difference]: Finished difference Result 3259 states and 4738 transitions. [2022-01-10 01:38:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:38:33,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 01:38:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:33,423 INFO L225 Difference]: With dead ends: 3259 [2022-01-10 01:38:33,423 INFO L226 Difference]: Without dead ends: 2215 [2022-01-10 01:38:33,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:38:33,425 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 1212 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:33,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 354 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:38:33,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-01-10 01:38:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1122. [2022-01-10 01:38:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.4487065120428189) internal successors, (1624), 1121 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1624 transitions. [2022-01-10 01:38:33,594 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1624 transitions. Word has length 68 [2022-01-10 01:38:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:33,594 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1624 transitions. [2022-01-10 01:38:33,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1624 transitions. [2022-01-10 01:38:33,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 01:38:33,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:33,595 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] [2022-01-10 01:38:33,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:38:33,595 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash 302063151, now seen corresponding path program 1 times [2022-01-10 01:38:33,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:33,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123114888] [2022-01-10 01:38:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:33,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:33,786 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 01:38:33,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:33,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123114888] [2022-01-10 01:38:33,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123114888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:33,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:33,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:38:33,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660423401] [2022-01-10 01:38:33,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:33,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 01:38:33,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 01:38:33,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:38:33,788 INFO L87 Difference]: Start difference. First operand 1122 states and 1624 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:34,646 INFO L93 Difference]: Finished difference Result 3244 states and 4712 transitions. [2022-01-10 01:38:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:38:34,647 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 01:38:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:34,655 INFO L225 Difference]: With dead ends: 3244 [2022-01-10 01:38:34,655 INFO L226 Difference]: Without dead ends: 2210 [2022-01-10 01:38:34,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:38:34,657 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 836 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:34,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 484 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:38:34,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2022-01-10 01:38:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1122. [2022-01-10 01:38:34,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.4451382694023194) internal successors, (1620), 1121 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1620 transitions. [2022-01-10 01:38:34,822 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1620 transitions. Word has length 69 [2022-01-10 01:38:34,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:34,823 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1620 transitions. [2022-01-10 01:38:34,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:34,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1620 transitions. [2022-01-10 01:38:34,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 01:38:34,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:34,824 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] [2022-01-10 01:38:34,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:38:34,824 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:34,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:34,825 INFO L85 PathProgramCache]: Analyzing trace with hash 69264625, now seen corresponding path program 1 times [2022-01-10 01:38:34,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:34,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270652941] [2022-01-10 01:38:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:34,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:35,017 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 01:38:35,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:35,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270652941] [2022-01-10 01:38:35,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270652941] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:35,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:35,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:38:35,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034128416] [2022-01-10 01:38:35,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:35,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 01:38:35,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:35,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 01:38:35,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:38:35,020 INFO L87 Difference]: Start difference. First operand 1122 states and 1620 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:35,976 INFO L93 Difference]: Finished difference Result 3214 states and 4660 transitions. [2022-01-10 01:38:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:38:35,977 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 01:38:35,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:35,984 INFO L225 Difference]: With dead ends: 3214 [2022-01-10 01:38:35,985 INFO L226 Difference]: Without dead ends: 2200 [2022-01-10 01:38:35,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:38:35,987 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 1179 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:35,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1179 Valid, 514 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:38:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2200 states. [2022-01-10 01:38:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2200 to 1122. [2022-01-10 01:38:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.4406779661016949) internal successors, (1615), 1121 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1615 transitions. [2022-01-10 01:38:36,238 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1615 transitions. Word has length 69 [2022-01-10 01:38:36,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:36,238 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1615 transitions. [2022-01-10 01:38:36,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:36,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1615 transitions. [2022-01-10 01:38:36,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 01:38:36,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:36,239 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] [2022-01-10 01:38:36,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:38:36,240 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:36,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1288867045, now seen corresponding path program 1 times [2022-01-10 01:38:36,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:36,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712113069] [2022-01-10 01:38:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:36,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:36,415 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 01:38:36,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:36,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712113069] [2022-01-10 01:38:36,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712113069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:36,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:36,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:38:36,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138418278] [2022-01-10 01:38:36,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:36,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:38:36,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:36,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:38:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:38:36,417 INFO L87 Difference]: Start difference. First operand 1122 states and 1615 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:37,277 INFO L93 Difference]: Finished difference Result 3185 states and 4628 transitions. [2022-01-10 01:38:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:38:37,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 01:38:37,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:37,285 INFO L225 Difference]: With dead ends: 3185 [2022-01-10 01:38:37,285 INFO L226 Difference]: Without dead ends: 2136 [2022-01-10 01:38:37,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:38:37,289 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 768 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:37,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 450 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:38:37,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2022-01-10 01:38:37,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 1122. [2022-01-10 01:38:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1122 states, 1121 states have (on average 1.43978590544157) internal successors, (1614), 1121 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:37,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1614 transitions. [2022-01-10 01:38:37,574 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1614 transitions. Word has length 70 [2022-01-10 01:38:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:37,574 INFO L470 AbstractCegarLoop]: Abstraction has 1122 states and 1614 transitions. [2022-01-10 01:38:37,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1614 transitions. [2022-01-10 01:38:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 01:38:37,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:37,578 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] [2022-01-10 01:38:37,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:38:37,578 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:37,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash -425050317, now seen corresponding path program 1 times [2022-01-10 01:38:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:37,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72444932] [2022-01-10 01:38:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:37,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:37,894 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 01:38:37,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:37,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72444932] [2022-01-10 01:38:37,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72444932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:37,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:37,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:38:37,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422284580] [2022-01-10 01:38:37,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:37,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 01:38:37,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 01:38:37,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:38:37,897 INFO L87 Difference]: Start difference. First operand 1122 states and 1614 transitions. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:40,235 INFO L93 Difference]: Finished difference Result 6589 states and 9608 transitions. [2022-01-10 01:38:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:38:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 01:38:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:40,258 INFO L225 Difference]: With dead ends: 6589 [2022-01-10 01:38:40,258 INFO L226 Difference]: Without dead ends: 6194 [2022-01-10 01:38:40,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:38:40,262 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1608 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:40,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 913 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:38:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2022-01-10 01:38:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 1101. [2022-01-10 01:38:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 1.44) internal successors, (1584), 1100 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:40,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1584 transitions. [2022-01-10 01:38:40,645 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1584 transitions. Word has length 71 [2022-01-10 01:38:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:40,645 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1584 transitions. [2022-01-10 01:38:40,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:40,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1584 transitions. [2022-01-10 01:38:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 01:38:40,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:40,646 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] [2022-01-10 01:38:40,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:38:40,647 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:40,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:40,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1237414452, now seen corresponding path program 1 times [2022-01-10 01:38:40,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:40,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430684174] [2022-01-10 01:38:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:40,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:41,509 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 01:38:41,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:41,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430684174] [2022-01-10 01:38:41,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430684174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:41,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:41,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-10 01:38:41,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777416046] [2022-01-10 01:38:41,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:41,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-10 01:38:41,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:41,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-10 01:38:41,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2022-01-10 01:38:41,511 INFO L87 Difference]: Start difference. First operand 1101 states and 1584 transitions. Second operand has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:47,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:47,277 INFO L93 Difference]: Finished difference Result 9464 states and 13811 transitions. [2022-01-10 01:38:47,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-10 01:38:47,278 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 01:38:47,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:47,294 INFO L225 Difference]: With dead ends: 9464 [2022-01-10 01:38:47,294 INFO L226 Difference]: Without dead ends: 9094 [2022-01-10 01:38:47,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=445, Invalid=2311, Unknown=0, NotChecked=0, Total=2756 [2022-01-10 01:38:47,299 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 3040 mSDsluCounter, 4311 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3040 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:47,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3040 Valid, 4676 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 01:38:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9094 states. [2022-01-10 01:38:47,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9094 to 1136. [2022-01-10 01:38:47,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 1.4352422907488986) internal successors, (1629), 1135 states have internal predecessors, (1629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1629 transitions. [2022-01-10 01:38:47,825 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1629 transitions. Word has length 71 [2022-01-10 01:38:47,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:47,825 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1629 transitions. [2022-01-10 01:38:47,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:47,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1629 transitions. [2022-01-10 01:38:47,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 01:38:47,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:47,826 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] [2022-01-10 01:38:47,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:38:47,827 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:47,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:47,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1749525204, now seen corresponding path program 1 times [2022-01-10 01:38:47,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:47,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501438583] [2022-01-10 01:38:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:47,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:48,531 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 01:38:48,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:48,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501438583] [2022-01-10 01:38:48,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501438583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:48,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:48,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-10 01:38:48,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634689604] [2022-01-10 01:38:48,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:48,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-10 01:38:48,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:48,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-10 01:38:48,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2022-01-10 01:38:48,534 INFO L87 Difference]: Start difference. First operand 1136 states and 1629 transitions. Second operand has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:53,981 INFO L93 Difference]: Finished difference Result 7179 states and 10459 transitions. [2022-01-10 01:38:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-10 01:38:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 01:38:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:53,994 INFO L225 Difference]: With dead ends: 7179 [2022-01-10 01:38:53,995 INFO L226 Difference]: Without dead ends: 6809 [2022-01-10 01:38:53,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=464, Invalid=2616, Unknown=0, NotChecked=0, Total=3080 [2022-01-10 01:38:53,998 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1673 mSDsluCounter, 4935 mSDsCounter, 0 mSdLazyCounter, 3606 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 5262 SdHoareTripleChecker+Invalid, 3674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:53,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 5262 Invalid, 3674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3606 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 01:38:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6809 states. [2022-01-10 01:38:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6809 to 1136. [2022-01-10 01:38:54,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 1.4334801762114537) internal successors, (1627), 1135 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:54,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1627 transitions. [2022-01-10 01:38:54,528 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1627 transitions. Word has length 71 [2022-01-10 01:38:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:54,529 INFO L470 AbstractCegarLoop]: Abstraction has 1136 states and 1627 transitions. [2022-01-10 01:38:54,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6296296296296298) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1627 transitions. [2022-01-10 01:38:54,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:38:54,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:54,530 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] [2022-01-10 01:38:54,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:38:54,530 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1430628756, now seen corresponding path program 1 times [2022-01-10 01:38:54,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:54,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665588677] [2022-01-10 01:38:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:54,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:54,807 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 01:38:54,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:54,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665588677] [2022-01-10 01:38:54,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665588677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:54,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:54,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 01:38:54,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642612398] [2022-01-10 01:38:54,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:54,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 01:38:54,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:54,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 01:38:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:38:54,809 INFO L87 Difference]: Start difference. First operand 1136 states and 1627 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:57,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:38:57,480 INFO L93 Difference]: Finished difference Result 4575 states and 6653 transitions. [2022-01-10 01:38:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:38:57,481 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 01:38:57,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:38:57,488 INFO L225 Difference]: With dead ends: 4575 [2022-01-10 01:38:57,488 INFO L226 Difference]: Without dead ends: 4185 [2022-01-10 01:38:57,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:38:57,490 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 1200 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:38:57,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 1478 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:38:57,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4185 states. [2022-01-10 01:38:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4185 to 1115. [2022-01-10 01:38:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4344703770197487) internal successors, (1598), 1114 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1598 transitions. [2022-01-10 01:38:58,111 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1598 transitions. Word has length 72 [2022-01-10 01:38:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:38:58,111 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1598 transitions. [2022-01-10 01:38:58,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:38:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1598 transitions. [2022-01-10 01:38:58,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:38:58,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:38:58,112 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] [2022-01-10 01:38:58,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:38:58,113 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:38:58,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:38:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1438947915, now seen corresponding path program 1 times [2022-01-10 01:38:58,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:38:58,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345958639] [2022-01-10 01:38:58,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:38:58,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:38:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:38:58,657 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 01:38:58,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:38:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345958639] [2022-01-10 01:38:58,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345958639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:38:58,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:38:58,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-01-10 01:38:58,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237364358] [2022-01-10 01:38:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:38:58,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-10 01:38:58,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:38:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-10 01:38:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:38:58,659 INFO L87 Difference]: Start difference. First operand 1115 states and 1598 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:03,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:03,513 INFO L93 Difference]: Finished difference Result 7292 states and 10634 transitions. [2022-01-10 01:39:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 01:39:03,514 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 01:39:03,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:03,522 INFO L225 Difference]: With dead ends: 7292 [2022-01-10 01:39:03,523 INFO L226 Difference]: Without dead ends: 6912 [2022-01-10 01:39:03,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2022-01-10 01:39:03,525 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 1119 mSDsluCounter, 3241 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:03,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 3588 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 01:39:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2022-01-10 01:39:04,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 1104. [2022-01-10 01:39:04,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 1103 states have (on average 1.4351767905711696) internal successors, (1583), 1103 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1583 transitions. [2022-01-10 01:39:04,171 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1583 transitions. Word has length 72 [2022-01-10 01:39:04,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:04,172 INFO L470 AbstractCegarLoop]: Abstraction has 1104 states and 1583 transitions. [2022-01-10 01:39:04,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1583 transitions. [2022-01-10 01:39:04,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:39:04,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:04,172 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] [2022-01-10 01:39:04,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:39:04,172 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:04,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1545437633, now seen corresponding path program 1 times [2022-01-10 01:39:04,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:04,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640537856] [2022-01-10 01:39:04,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:04,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:04,234 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 01:39:04,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:04,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640537856] [2022-01-10 01:39:04,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640537856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:04,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:04,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:39:04,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051096133] [2022-01-10 01:39:04,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:04,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 01:39:04,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:04,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 01:39:04,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 01:39:04,237 INFO L87 Difference]: Start difference. First operand 1104 states and 1583 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:05,102 INFO L93 Difference]: Finished difference Result 2516 states and 3652 transitions. [2022-01-10 01:39:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:39:05,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 01:39:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:05,104 INFO L225 Difference]: With dead ends: 2516 [2022-01-10 01:39:05,104 INFO L226 Difference]: Without dead ends: 1507 [2022-01-10 01:39:05,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:39:05,106 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 73 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:05,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 355 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:39:05,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-01-10 01:39:05,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1496. [2022-01-10 01:39:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 1.4327759197324414) internal successors, (2142), 1495 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:05,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 2142 transitions. [2022-01-10 01:39:05,861 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 2142 transitions. Word has length 72 [2022-01-10 01:39:05,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:05,861 INFO L470 AbstractCegarLoop]: Abstraction has 1496 states and 2142 transitions. [2022-01-10 01:39:05,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:05,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 2142 transitions. [2022-01-10 01:39:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:39:05,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:05,862 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] [2022-01-10 01:39:05,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:39:05,862 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:05,863 INFO L85 PathProgramCache]: Analyzing trace with hash -654506813, now seen corresponding path program 1 times [2022-01-10 01:39:05,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:05,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423225525] [2022-01-10 01:39:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:05,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:05,916 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 01:39:05,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:05,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423225525] [2022-01-10 01:39:05,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423225525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:05,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:05,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:39:05,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517830176] [2022-01-10 01:39:05,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:05,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:39:05,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:05,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:39:05,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:39:05,918 INFO L87 Difference]: Start difference. First operand 1496 states and 2142 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:07,187 INFO L93 Difference]: Finished difference Result 2301 states and 3304 transitions. [2022-01-10 01:39:07,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:39:07,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 01:39:07,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:07,191 INFO L225 Difference]: With dead ends: 2301 [2022-01-10 01:39:07,191 INFO L226 Difference]: Without dead ends: 2299 [2022-01-10 01:39:07,192 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 01:39:07,193 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 140 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:07,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 607 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:39:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2022-01-10 01:39:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 1506. [2022-01-10 01:39:08,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.4225913621262458) internal successors, (2141), 1505 states have internal predecessors, (2141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2141 transitions. [2022-01-10 01:39:08,078 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2141 transitions. Word has length 72 [2022-01-10 01:39:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:08,078 INFO L470 AbstractCegarLoop]: Abstraction has 1506 states and 2141 transitions. [2022-01-10 01:39:08,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2141 transitions. [2022-01-10 01:39:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 01:39:08,078 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:08,078 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] [2022-01-10 01:39:08,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 01:39:08,079 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1371390844, now seen corresponding path program 1 times [2022-01-10 01:39:08,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:08,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471179348] [2022-01-10 01:39:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:08,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:08,570 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 01:39:08,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:08,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471179348] [2022-01-10 01:39:08,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471179348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:08,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:08,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-01-10 01:39:08,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465475369] [2022-01-10 01:39:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:08,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-10 01:39:08,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:08,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-10 01:39:08,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:39:08,572 INFO L87 Difference]: Start difference. First operand 1506 states and 2141 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:39:16,560 INFO L93 Difference]: Finished difference Result 11437 states and 16452 transitions. [2022-01-10 01:39:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 01:39:16,561 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 01:39:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:39:16,571 INFO L225 Difference]: With dead ends: 11437 [2022-01-10 01:39:16,571 INFO L226 Difference]: Without dead ends: 10024 [2022-01-10 01:39:16,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=377, Invalid=1879, Unknown=0, NotChecked=0, Total=2256 [2022-01-10 01:39:16,573 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 997 mSDsluCounter, 6057 mSDsCounter, 0 mSdLazyCounter, 4143 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 6483 SdHoareTripleChecker+Invalid, 4193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 4143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 01:39:16,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 6483 Invalid, 4193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 4143 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 01:39:16,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2022-01-10 01:39:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 1514. [2022-01-10 01:39:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 1.420356906807667) internal successors, (2149), 1513 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 2149 transitions. [2022-01-10 01:39:17,500 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 2149 transitions. Word has length 72 [2022-01-10 01:39:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:39:17,500 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 2149 transitions. [2022-01-10 01:39:17,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 25 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:39:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 2149 transitions. [2022-01-10 01:39:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 01:39:17,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:39:17,501 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] [2022-01-10 01:39:17,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 01:39:17,501 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:39:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:39:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 838067914, now seen corresponding path program 1 times [2022-01-10 01:39:17,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:39:17,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916717547] [2022-01-10 01:39:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:39:17,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:39:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:39:18,297 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 01:39:18,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:39:18,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916717547] [2022-01-10 01:39:18,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916717547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:39:18,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:39:18,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-10 01:39:18,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544335854] [2022-01-10 01:39:18,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:39:18,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 01:39:18,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:39:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 01:39:18,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:39:18,299 INFO L87 Difference]: Start difference. First operand 1514 states and 2149 transitions. Second operand has 22 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 22 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)